Hampstead Architecture and Planning

Services

Architectural services for prime London homes

From early feasibility and planning to building regulations, technical design and construction support — a full architectural-services library, organised so you can appoint stage by stage.

Our work follows the RIBA Plan of Work, so each stage is properly resolved before the next. There are 49 services below across 8 areas of practice.

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Illustrative rear elevation of a London house with a garden extension and a loft dormerIllustrative
Illustrative study — not a completed client project

Browse by area of practice

Our areas of work

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Architecture & Design

Design-led residential work for houses, flats and period homes, from briefing and feasibility to a fully coordinated design.

6 services

Interior Design

Design-led interiors for London homes and flats — from space planning, joinery and lighting through finishes, FF&E and styling — delivered to a single, coherent vision.

4 services

Extensions & Renovations

Extensions, lofts, basements and whole-house refurbishment, designed for planning, daylight, buildability and value.

14 services

Planning & Consents

Planning applications, pre-application advice, feasibility, permitted development and the consents London projects need.

11 services

Heritage & Conservation

Sensitive design for conservation areas, listed buildings and period homes, with the heritage information consents require.

5 services

Technical & Building Regulations

Building regulations and construction information, coordinating structure, fire, energy and drainage with the right specialists.

3 services

Leasehold & Licence to Alter

Licence to Alter, freeholder consent and party wall coordination for London flats and mansion blocks.

2 services

Project Delivery & Support

A full architectural service, tendering, contract administration and construction-stage support through to completion.

4 services

6 services

Architecture & Design

Design-led residential work for houses, flats and period homes, from briefing and feasibility to a fully coordinated design.

Architecture & Design

Residential Architects

Residential architecture begins with a home, a proposed change and an agreed appointment, not with one standard package that applies to every London address. We first identify the property, legal planning unit, ownership, existing information and work being considered. That record lets design, planning, heritage, leasehold, Building Regulations, Party Wall and construction duties be tested separately instead of inferred from a postcode or project label. The service can then coordinate the architectural brief and drawings through the stages actually commissioned, while keeping specialist design, statutory decisions, contractor responsibilities and private consents with the people who hold them. No drawing, registration, application or appointment guarantees permission, cost, programme, value or a particular construction outcome.

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Architecture & Design

Flat & Apartment Architects

We design for London flats — apartments, mansion-block flats and lateral conversions — where the challenge is as much about the lease as the layout. We rework space for light and flow and prepare the drawings freeholders, managing agents and building control require.

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Architecture & Design

New Build House Architects

Designing a one-off house is the most complete thing architecture can offer — a chance to shape every room, sightline and material from a blank plot rather than working around what already exists. We design new-build houses across London, whether on a rare infill plot squeezed between neighbours, a backland site, or the replacement of a tired existing dwelling with something far better. From the first feasibility appraisal through planning, technical design and construction, we hold the whole picture together: the design ambition, the planning strategy that makes it possible, and the buildable detail that lets a contractor price and build it with confidence. The result should feel inevitable — a house that belongs on its plot and rewards the years spent in it.

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Architecture & Design

Prime London Residential Architects

Prime London is a market description, not a planning designation or a single consent route. This service covers prime central and prime north London by starting with the complete address, the building and the proposed work, then coordinating the planning authority, heritage record, title or lease, estate controls and technical approvals that the evidence shows are relevant. It is suitable for a house or apartment project that needs one disciplined design record across several decision-makers, without treating location, appearance or value as proof of any constraint or likely outcome.

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Architecture & Design

Luxury Home Architects

The phrase “luxury and high-specification London homes” is not a planning category, price threshold, visual style or promised outcome. Such a project can have a brief, existing building, consents, technical interfaces, bespoke elements and decision record requiring unusually close coordination. The useful starting point is therefore the complete address, the property and the proposed work—not a postcode’s reputation or a generic specification list. This service develops one traceable design record while keeping planning, heritage, lease or estate controls, Building Regulations, Party Wall procedures, construction duties and specialist performance briefs as separate routes. Quality, cost and programme remain matters to define, test and manage; none can be guaranteed by the label “luxury”.

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Architecture & Design

Interior Architecture

Interior architecture is about how space, light and detail work together inside a home — not decoration alone. We plan interiors and design the joinery, stairs and key details that make a refurbishment feel considered, coherent and complete.

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4 services

Interior Design

Design-led interiors for London homes and flats — from space planning, joinery and lighting through finishes, FF&E and styling — delivered to a single, coherent vision.

Interior Design

Full-Service Interior Design

Our full-service interior design takes a home from first concept to a styled, ready-to-live-in handover — with everything managed under one roof. You appoint a single team to develop the scheme, specify every finish and piece of furniture, place and track the orders, coordinate the trades and installers, and dress the finished rooms down to the last lamp and cushion. For busy London households, and for owners abroad or between homes, this is the least stressful way to reach a genuinely finished interior. We handle the hundreds of decisions and deliveries that a beautiful room quietly depends on, so you walk into a home that is complete rather than a project that is nearly there.

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Interior Design

Residential Interior Design

Residential interior design is where the whole home comes together — how it looks, how it feels underfoot and to the eye, and how the decoration and furnishing make sense as a single idea rather than a series of separate rooms. We design interiors for London houses and flats across the full picture: layout and flow, colour and materials, joinery direction, lighting, furniture and the finishing layer that makes a home feel resolved — including principal suites, bedrooms, dressing rooms and fitted wardrobes as part of the whole-home scheme. This is our decoration-and-furnishing service — the layer that sits on top of the architecture. Where the fabric of the home is being altered, it works hand in hand with our interior-architecture service, so the built-in and the furnished layers are conceived together rather than colliding on site.

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Interior Design

FF&E Specification & Procurement

FF&E — furniture, fittings and equipment — is where an interior scheme becomes a home you can live in. Our in-house team specifies, sources and procures every loose element of a project, from sofas, beds and dining tables to lighting, rugs, mirrors and the small accessories that finish a room. We buy at trade across British and European makers, manage lead times and logistics, and coordinate delivery, assembly and installation so nothing lands on site before it is ready. For London clients juggling renovations, second homes and busy lives, we take the whole procurement burden off your desk — one schedule, one point of contact, one accountable budget — and hand back rooms that are complete, considered and ready to enjoy.

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Interior Design

Kitchen & Bathroom Interior Design

Kitchens and bathrooms are the hardest-working rooms in most London homes and the ones where poor design shows soonest. Our kitchen and bathroom interior design service treats each as a single, coherent scheme rather than a showroom layout with finishes bolted on — bringing together the plan, the cabinetry or sanitaryware, worktops and surfaces, lighting and finishes so they resolve as one idea. We design to how you actually cook, bathe and gather, and to the realities of the room: its light, its proportions, its services and, in a period home, its quirks. The result is a kitchen or bathroom that works as hard as you need it to and looks like part of the home rather than a unit dropped into it.

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14 services

Extensions & Renovations

Extensions, lofts, basements and whole-house refurbishment, designed for planning, daylight, buildability and value.

Extensions & Renovations

Garden Room Architects

A well-designed garden room is one of the most cost-effective ways to add usable space to a London home — a proper home office, a studio, a gym or a quiet retreat at the bottom of the garden, separate from the house yet steps away. The appeal is partly that many garden rooms can be built under permitted development as outbuildings, avoiding a full planning application, provided they stay non-habitable and within strict size and height limits. We design garden rooms that are genuinely comfortable year-round — properly insulated, weathertight and detailed to last — rather than the glorified sheds that disappoint. Getting the permitted-development rules, the siting and the construction right from the start is what separates a garden room you use every day from an expensive garden ornament.

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Extensions & Renovations

Two-Storey Extension Architects

Adding to two floors at once is the most efficient way to grow a house — a larger kitchen and living space below, an extra bedroom or bathroom above, delivered in a single build rather than two disruptive projects. A two-storey extension carries more design and planning weight than a single-storey one, because it is far more visible from neighbouring gardens and the street, and it engages amenity, massing and party-wall questions more seriously. We design rear and side two-storey extensions across London that add real space and value while sitting comfortably against the existing house and its neighbours. The reward for handling the extra complexity well is a home transformed on both floors, with the mess and expense of construction concentrated into one programme instead of endured twice.

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Extensions & Renovations

House Extension Architects

We design rear, side-return, wraparound, two-storey, kitchen and roof extensions for London homes. Our service can take a project from feasibility and design options through planning drawings, Building Regulations information and tender drawings where those stages are included. Published fixed-fee packages cover defined drawing and application scopes; council fees, surveys and specialist consultants remain separate unless the written appointment says otherwise.

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Extensions & Renovations

Rear Extension Architects

A well-designed rear extension can transform how a London home connects to its garden and brings light into the heart of the plan. We design rear additions that work for daylight, privacy and neighbour amenity, and prepare the planning and building regulation drawings they need.

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Extensions & Renovations

Side Return Extension Architects

The side return — the narrow strip of space beside the rear closet wing of a Victorian or Edwardian terrace — is one of the most effective extensions in London. We design side-return extensions that capture that wasted space to create bright, generous kitchen-dining rooms.

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Extensions & Renovations

Wraparound Extension Architects

A wraparound extension combines a side-return infill with a rear extension to create a large, L-shaped ground floor. It offers the most generous ground-floor transformation of a terraced house, but it also carries the most planning and structural complexity — which is exactly where careful design pays off.

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Extensions & Renovations

Loft Conversion Architects

A reliable loft-conversion brief begins with the complete address, planning unit, property type, existing and original roof, previous enlargements and exact operations. A familiar dormer or unused roof does not establish permitted development, planning acceptability, structural feasibility or Building Regulations compliance. We measure accessible geometry, identify missing evidence and separate the planning, certificate, heritage, building-control, Party Wall, lease and specialist routes. The appointment defines the architectural work and allocates structural, fire, heritage, control, Party Wall, legal and cost responsibilities separately. It can expose decisions and dependencies, but cannot guarantee permission, approval, room area, cost, programme or concealed conditions.

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Extensions & Renovations

Basement Architects

A basement proposal starts with the complete address, local planning authority, lawful building and use, ownership, existing levels, proposed excavation and reliable site information. “Basement” alone does not establish planning permission, a Basement Impact Assessment, structural method, waterproofing system, flood report, tree report, sewer agreement, Party Wall procedure or lease consent. Each route follows the actual land, building, work and evidence. The architectural role can coordinate spatial design and the information interfaces, while structural, geotechnical, hydrogeological, drainage, arboricultural, heritage, waterproofing, fire, legal and cost questions remain with appropriately competent advisers where the scope requires them. Investigation reduces uncertainty but cannot prove every concealed condition or guarantee consent, construction performance, cost or programme.

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Extensions & Renovations

House Refurbishment Architects

A whole-house refurbishment is a coordinated change to an existing home, not evidence that every room, service or part of the fabric needs replacement. The useful starting point is the complete address, property type, legal planning unit, title or lease, occupied condition, proposed work and information already available. From that record, the architectural scope can distinguish layout design from investigation, statutory applications, specialist design, procurement and construction-stage roles. The route may involve planning, heritage, Building Regulations, private consent, Party Wall procedures, asbestos information and duties under construction law, but none is inferred from the neighbourhood, the age of the house or the label “refurbishment”. Each is checked against the building and the work before it becomes a programme, cost or design assumption.

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Extensions & Renovations

Flat Refurbishment Architects

Refurbishing a London flat usually means working within a lease as well as a layout. We design flat reconfigurations and prepare the drawings freeholders, building control and contractors require, resolving acoustic, fire and structural matters between dwellings.

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Extensions & Renovations

Garage Conversion Architects

An integral or attached garage is often the most underused space in a London house — too small for a modern car, used for bikes and boxes, yet already within the footprint and under the roof. Converting it into a habitable room is one of the least disruptive ways to gain a study, playroom, bedroom, utility or annexe, because the shell already exists. The work is deceptively technical, though: a garage was never built to keep people warm and dry, so a good conversion is really about upgrading a cold, damp, poorly insulated structure to the standard a living room demands. We design garage conversions across London that feel like a proper part of the house — warm, dry and naturally lit — rather than a chilly afterthought that betrays its origins.

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Extensions & Renovations

Dormer Loft Conversion Architects

The usable space in a loft is decided by the shape of the roof, and where a plain rooflight conversion cannot give enough standing room, reshaping the roof is the answer. A dormer projects from the slope to create full head-height and floor area beneath a flat or pitched dormer roof; a hip-to-gable conversion squares off a hipped end into a vertical gable wall, unlocking the volume that the slope of a hip otherwise wastes. Both are powerful, and both are governed by particular rules on roof form, height and how the alteration sits against the original roofline. We design dormer and hip-to-gable loft conversions across London to win the maximum genuinely usable space the roof and the planning rules allow, while keeping the reshaped roof looking considered rather than crudely bulked-out.

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Extensions & Renovations

Kitchen Extension Architects

The kitchen extension is the heart of most family-home projects: a bright kitchen-dining-living space that opens to the garden. We design these spaces as architecture and joinery together, coordinating layout, light, ventilation and the connection to the garden.

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Extensions & Renovations

Mansard Loft Architects

A mansard reshapes the roof into a steeper, near-vertical form to create a full additional storey. It adds the most loft space of any conversion, but in Prime London’s terraces and conservation areas it demands careful design, roofscape analysis and a well-evidenced planning case.

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11 services

Planning & Consents

Planning applications, pre-application advice, feasibility, permitted development and the consents London projects need.

Planning & Consents

Planning Application Architects

We advise on the right consent route, assemble the evidence and manage London residential planning applications from submission and validation through case-officer queries and decision. This service covers householder and full applications, listed building consent, condition discharge and amendments; the drawing package itself is explained separately on our planning drawings page.

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Planning & Consents

Pre-Application Advice Architects

For sensitive or higher-value proposals, we prepare pre-application material and design options to test the planning principle with the local authority before a full application is made — reducing the risk of an outright refusal on schemes where the position is uncertain.

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Planning & Consents

Planning Feasibility Studies

Before you buy a property or commit to a full design, a planning feasibility study establishes what is realistically achievable. We review planning history, designations and constraints, test options, and set out the likely risks — so you make decisions with evidence, not optimism.

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Planning & Consents

Planning Drawings

Planning drawings are the core visual evidence in a planning application. They show the existing building, the proposed works and the relationship to the site clearly enough for a local planning authority to validate and assess the proposal. We prepare planning drawing packages for London houses, flats, extensions, lofts, alterations and small developments, aligning the drawings with the correct application route and supporting documents.

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Planning & Consents

Permitted Development Advice

Permitted development rights can allow certain works to houses without a full planning application — but in London they are frequently restricted. We advise honestly on whether your project is likely to be permitted development, and where a lawful development certificate is worth obtaining.

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Planning & Consents

Lawful Development Certificate Architects

A lawful development certificate confirms in writing that proposed works are permitted development, or that existing works are lawful. We prepare the drawings and applications, giving certainty that is often valuable for peace of mind and for a future sale or refinance.

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Planning & Consents

Planning Appeal Support

When a London planning application is refused, an appeal to the Planning Inspectorate can overturn the decision where the refusal is not justified on policy. We provide the design strategy, revised drawings and supporting statements an appeal needs, and coordinate planning consultants for the formal case.

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Planning & Consents

Pre-Purchase Planning Advice

The best time to test what a property will allow is before you buy it. We review the planning position, designations and realistic potential of a London home you are considering, so you can proceed, negotiate or walk away with a clear understanding of what is achievable.

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Planning & Consents

Design & Access Statements

A design and access statement explains the thinking behind a proposal — how it responds to context, why it looks as it does, and how access works. For sensitive and larger applications, a well-written statement helps case officers understand and support a scheme.

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Planning & Consents

Discharge of Planning Conditions

Planning permissions almost always come with conditions — details that must be approved before or during works, such as materials, windows, landscaping and method statements. We prepare and submit the information needed to discharge them, so the build is not held up.

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Planning & Consents

Article 4 Direction Advice

An Article 4 direction withdraws specified permitted-development rights for specified development on specified land. It is not a general ban, a conservation-area label or a prediction that an application will be refused. Reliable advice starts with the complete application site, planning unit, current use, property type and precisely described operations. It then identifies the relevant Schedule 2 Part, Class and paragraph, tests every limitation, condition and prior-approval requirement, and reads the actual direction with its plan or schedule, notices and operative dates. Planning history and conditions are checked separately. The result is a dated evidence register and a route for an application for planning permission or, where appropriate, a proposal-specific lawful-development certificate. Building Regulations, listed-building, landlord, Party Wall, licensing, tree and other approvals remain separate questions.

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5 services

Heritage & Conservation

Sensitive design for conservation areas, listed buildings and period homes, with the heritage information consents require.

Heritage & Conservation

Conservation Area Architects

Conservation-area work starts with a complete address, a defined planning unit and a precise description of the proposed operation. The neighbourhood name, age or appearance of a building cannot establish whether the application site is inside a conservation area, listed, locally listed, covered by an Article 4 direction or affected by a planning condition. We check those records independently, identify the current national, London-wide and borough policy context, and use the relevant appraisal or management guidance as evidence for design. The service can cover extensions, roof and window alterations, refurbishment, retrofit, demolition proposals and landscape or boundary work, but it does not treat designation as a ban on change or promise that a particular design, material or application route will be accepted.

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Heritage & Conservation

Listed Building Architects

Architectural work to a listed building starts with the complete address, current National Heritage List for England record, building as found and an exact description of the proposed operation. Designation does not mean that every internal or external task needs listed building consent, and a short list description does not define every protected element. The statutory question is whether demolition, alteration or extension would affect the building’s character as one of special architectural or historic interest. A useful architectural brief therefore connects affected fabric and significance to design options, drawings and proportionate evidence while keeping planning permission, Building Regulations, private rights and Party Wall procedures separate. The written appointment must identify its architectural outputs, evidence limits and specialist responsibilities; neither an architect’s involvement nor an application guarantees consent, technical approval, cost, programme or site conditions.

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Heritage & Conservation

Listed Building Consent

Listed building consent is a work-specific legal route, not a general label for every old or architecturally distinctive home. Start with the complete address, current National Heritage List for England record, building as found and exact schedule of demolition, alteration or extension. Consent is required where works would affect the listed building’s character as one of special architectural or historic interest. That test can engage internal and external fabric, fixtures and, in some circumstances, curtilage structures; it cannot be inferred from grade, a short list description or a neighbourhood name. We develop proportionate, significance-led evidence and keep listed building consent separate from planning permission, Building Regulations, private controls and Party Wall procedures.

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Heritage & Conservation

Period Property Refurbishment

London’s Georgian, Victorian, Edwardian and interwar homes reward sensitive, knowledgeable design. We upgrade period properties for modern life — better layouts, light and performance — while respecting the original fabric, proportions and character that give them value.

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Heritage & Conservation

Heritage Statements & Impact Assessments

A heritage statement is project evidence, not a report automatically required because a property is old, listed or inside a conservation area. Start with the complete site, proposed work and every affected heritage asset, including relevant setting. National policy expects significance information proportionate to the asset’s importance and sufficient to understand potential impact. Format, depth and authorship follow the asset, proposal, application route and current validation requirements. A heritage statement and a Design and Access Statement are distinct: they can sometimes be coordinated or combined, but have different purposes and triggers. No universal standalone document follows from the property label.

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3 services

Technical & Building Regulations

Building regulations and construction information, coordinating structure, fire, energy and drainage with the right specialists.

Technical & Building Regs

Building Regulations Drawings

Planning drawings are rarely enough to build from. We prepare building regulations drawing packages with the technical information building control and contractors need — coordinating structure, fire, drainage, energy and ventilation input from the relevant specialists.

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Technical & Building Regs

Technical Design & Tender Documentation

A well-prepared tender package helps you compare builders fairly and reduces surprises on site. We produce coordinated technical and tender information — drawings, schedules and an outline specification — for London residential projects.

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Technical & Building Regs

Building Control Applications

Building control checks that work complies with the Building Regulations. We support building control applications for residential projects — full plans or building notice — submitting to local authority building control or a registered building control approver and coordinating the inspection process.

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2 services

Leasehold & Licence to Alter

Licence to Alter, freeholder consent and party wall coordination for London flats and mansion blocks.

Leasehold & Licence to Alter

Licence to Alter Packages

Leaseholders altering a London flat usually need freeholder consent under a Licence to Alter. We prepare or coordinate the drawings and information freeholders and managing agents request — structural, acoustic, fire, waterproofing and services — so the application proceeds smoothly.

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Leasehold & Licence to Alter

Estate, Trust & Freeholder Consents

Many London homes sit within an estate, a trust area or a leasehold structure where alterations need the consent of a freeholder, managing agent, estate office or management company before work can begin. We prepare the clear, complete approval packs these bodies expect, and align them with any Licence to Alter and the planning route.

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4 services

Project Delivery & Support

A full architectural service, tendering, contract administration and construction-stage support through to completion.

Project Delivery

Full Architectural Service

A full architectural service takes a project from first brief to completion, following the RIBA Plan of Work. We provide continuity, coordination and oversight across every stage — the most reliable way to protect design quality, manage risk and keep a prime London project on track.

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Project Delivery

Contract Administration

During construction, someone needs to administer the building contract fairly and keep the project on track. We can act as contract administrator on suitable residential projects, confirming our scope, competence and insurance in writing before construction begins.

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Project Delivery

Principal Designer (CDM 2015)

Under the Construction (Design and Management) Regulations 2015, the Principal Designer coordinates health and safety during the design phase where there is more than one contractor. We can advise on these duties and confirm in writing whether we can accept the appointment.

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Project Delivery

Construction Stage Architectural Support

Even a well-detailed project raises questions on site. We provide architectural support during construction — answering builder queries, issuing supplementary details and coordinating design decisions — so the quality intended in design survives the build.

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Where we work

Services across prime London areas

Each area page explains the local evidence, exact-address authority checks and conservation considerations that shape how these services apply in that neighbourhood.

North London

Central London

South, West & South West London

East & South East London

How we work

A clear process from first call to completion

Each stage can be appointed in turn, so commitment stays proportionate to progress.

  1. Strategic definition & brief

    We establish objectives, scope and a clear brief.

  2. Feasibility & concept

    We test what is achievable and develop the design direction.

  3. Planning & consents

    We secure the planning and other consents the project needs.

  4. Technical design

    We produce coordinated building regulations and construction information.

  5. Tender

    We obtain and compare contractor prices on a consistent basis.

  6. Construction & handover

    We support the build, with contract administration where appointed.

Frequently asked questions

How do I know which service I need?

Most projects move through several of these services in sequence — feasibility, design, planning, technical design and construction support. If you are unsure, send us the property and a short description and we will advise the likely route and what is needed first.

Do you offer a full architectural service?

Yes. We can take a project from first brief to completion following the RIBA Plan of Work, or provide focused appointments such as planning-only or building regulations packages.

Which services do you deliver in-house versus coordinate?

We provide architectural design, drawings and coordination in-house, and we prepare heritage statements in-house too, involving specialist heritage consultants for the most complex or highly graded assets. Regulated and specialist input — structural engineering, energy assessment, fire engineering and party wall awards — is provided by appropriate specialists whom we coordinate. We are clear about which applies to each service.

Can you support leasehold flats and Licence to Alter applications?

Yes. We prepare reconfiguration designs, Licence to Alter and freeholder consent drawings, and coordinate the structural, acoustic and fire information freeholders and managing agents require.

Will you guarantee planning permission?

No. The decision rests with the local planning authority. We design to give a proposal the best reasonable prospect and advise honestly on the risks, but approval cannot be guaranteed.

Not sure which service you need?

Send us the property address, type and a short description of the work. We will advise which drawings and approvals are likely to be needed before you commit to a full design package.

Book an Architectural ConsultationSend Project Detailsor call 020 8054 8756
Call 020 8054 8756Send Details