Westminster
We work on Marylebone townhouses and flats, coordinating planning, conservation, Licence to Alter and building regulations for refurbishment and reconfiguration in central London.
Last updated
Practice leadership
Eyal Moran, Director and Lead Architect, is an ARB-registered architect, leading design judgement, planning strategy and technical coordination across client projects.
Verify on the Architects RegisterPlanning at a glance
Marylebone
| Local planning authority | Westminster City Council (City of Westminster) |
|---|---|
| Conservation area | East Marylebone Conservation Area — appraisal adopted 1982 (extended 1990) |
| Likely approval route | Householder planning application or permitted development, depending on conservation status, listing and property type — confirmed for the exact address before drawings begin |
| Statutory determination time | 8 weeks for most householder applications (13 weeks for major applications) |
| Typical drawing package | £395–£4,950 inc. VAT, fixed fee. Find my package → |
Marylebone is a refined central London district of Georgian and Victorian townhouses, mansion flats, mews houses and well-managed estate streets. It combines extensive conservation-area coverage with a high concentration of listed buildings, so external — and frequently internal — alterations are tightly controlled. Much of the residential stock is leasehold, meaning freeholder consent through a Licence to Alter is a common requirement on top of any planning or listed building consent.
Projects here are typically high-specification refurbishment, the reconfiguration of townhouses and flats, and careful internal remodelling. Where a building is listed, internal works such as altering layouts, staircases or historic features can require listed building consent, so confirming a property’s status before design work begins is essential. We design sensitively, coordinate heritage statements where needed, and prepare the existing and proposed drawings these applications demand.
Marylebone falls within the City of Westminster, and proposals are assessed against Westminster policy and the relevant conservation-area appraisals, with listing and estate-management considerations confirmed per address. We manage the combination of consents a project requires — planning, listed building consent and Licence to Alter — and coordinate the structural, surveying and party wall input that dense central London sites involve.
Local analysis
Marylebone contains Georgian estate streets, mansion flats, mixed medical and residential buildings, mews properties and apartments in managed blocks. The use history is often as important as the elevation.
The address should be checked against Portman Estate, Harley Street, East Marylebone, Dorset Square or other Westminster conservation contexts before relying on a neighbouring precedent.
The audience can include Westminster, an estate surveyor, Howard de Walden or Portman interests, a freeholder, building management, building control and consultants for fire, acoustics and structure.
Marylebone flats and former professional buildings need fire, acoustic, access, ventilation and services checks before wall moves, wet-area changes or high-value interiors are treated as straightforward.
Construction information should anticipate common-part protection, working-hour limits, lift access, neighbour sensitivity and consultant sign-off for floors, structure, drainage, services and fire stopping.
Local services
Marylebone advice should identify whether the first blocker is estate approval, use history, heritage evidence, flat technical detail or ordinary design feasibility.
Where wet areas, joinery or services move in a mansion flat, risers, acoustic build-up and fire separation should be checked before layouts are fixed.
Project routes
For Harley Street and former professional buildings, lawful use, fire strategy and access can change the route before layout design is the main issue.
For Portman Estate or Howard de Walden context, estate review can run alongside Westminster planning or listed-building consent rather than after it.
For Marylebone mansion flats, acoustic floors, risers, drainage, fire separation and common-part protection should be tested before wet areas are moved.
Local evidence
Official Westminster material separates nearby Marylebone contexts such as Portman Estate, Harley Street, East Marylebone and Dorset Square, so the correct estate or conservation-area reference matters before drawings are scoped.
Portman Estate.
Harley Street.
East Marylebone.
Cavendish Square.
Howard de Walden.
Westminster Harley Street material records Harley Street as first designated as a conservation area in 1968.
Westminster Harley Street guidance records development on the Howard de Walden, formerly Cavendish-Harley, Estate beginning in 1717 with Cavendish Square.
Westminster Portman Estate audit material records the Portman Estate as originally about 270 acres, extending north from Oxford Street.
Westminster East Marylebone audit material records East Marylebone as first designated in 1982 and extended in 1990 to include the Middlesex Hospital.
Check Westminster Harley Street, Portman Estate, East Marylebone and Dorset Square conservation audit material for the address.
Check estate guidance from Portman, Howard de Walden, the freeholder or the managing agent where relevant.
Check planning history, lawful-use evidence, listed-building status and lease rules before confirming the scope.
East Marylebone Conservation Area. Marylebone is not a single conservation area but a district covered by several of Westminster's 56 designated conservation areas. The CA carrying the Marylebone name is East Marylebone (between Oxford Street and Marylebone Road, east of Regent Street), designated 1982 and extended 1990. Recorded 1982 (extended 1990).
Area facts
Georgian townhouse on an estate street.
Harley Street mixed-use building.
mansion flat near Marylebone Road.
Useful evidence includes estate guidance, listed status, previous medical or office use, lease terms, acoustic requirements, riser positions, structural assumptions and photographs of original fabric.
Useful local facts
Early Marylebone advice should help owners distinguish a design brief from a use-history problem, an estate approval problem, a listed-building problem or a technical flat-refurbishment problem.
Identify whether the property is in Harley Street, Portman Estate, East Marylebone, Dorset Square or another Westminster conservation context before relying on a local precedent.
Check use history early where the building has medical, office or mixed residential use, because fire strategy, access and planning route may change.
Ask the estate, freeholder or managing agent what alteration evidence is required before drawings are packaged for Westminster or tender.
Local process
Which Westminster conservation area and estate context applies?
Is there medical, office or mixed-use history that changes planning or fire strategy?
Do acoustic floors, risers, fire separation, original fabric or common parts change the technical package?
estate guidance or freeholder alteration requirements for the exact address.
planning and use history, especially where medical, office or mixed-use occupation may have existed.
lease, acoustic criteria, riser information, fire information and photographs of original fabric.
Decision checklist
A former professional or medical building may look residential now but still carry use-history, fire and access questions.
Estate streets and mansion flats can need approvals outside the council route, so a planning-only pack may not let the project start on site.
Thinking about a project in Marylebone?
Send the address and a short description. We will confirm the likely approval route and the drawings your project needs.
Local planning
Marylebone lies within the City of Westminster, with extensive conservation-area coverage and many listed buildings.
Leasehold tenure is common, so freeholder consent via a Licence to Alter is frequently required.
Marylebone’s Georgian townscape and estate-managed streets are closely protected.
Many Marylebone buildings are listed, requiring listed building consent for a wide range of alterations.
For the wider local-authority picture — policies, timescales and application routes — see planning in Westminster.
Services
Extensions & Renovations
Planning & Consents
Heritage & Conservation
Technical & Building Regulations
Leasehold & Licence to Alter
For services without a dedicated Marylebone page, use the London-wide overview to understand the scope, deliverables and next steps.
Architecture & Design
Interior Design
Planning & Consents
Heritage & Conservation
Technical & Building Regulations
Leasehold & Licence to Alter
Project Delivery & Support
Nearby
Tell us about your Marylebone property. We will confirm the planning, listing and leasehold position and advise on the drawings and consents required.
