Lambeth
We refurbish Clapham houses and converted flats as a single coordinated project — the period terrace planned as a whole rather than room by room. On the bay-fronted terraces around the Abbeville streets and the older houses of the Old Town, the work that decides the outcome is the part you never see once the plaster goes back: the beam positions, the service routes, the solid-wall insulation and the acoustic separation between floors. Our drawings and schedules fix those before any finish is chosen.
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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 RegisterThe short answer
Usually yes. Refurbishing a Clapham terrace or converted flat as one coordinated project — rather than room by room — lets the structure, services, insulation and period fabric be designed together and built in the right order. It avoids later trades unpicking earlier work, and it gives every builder a single schedule to price against, so quotes are comparable and the contingency is real.
Planning at a glance
Clapham
| Local planning authority | Lambeth (parts of Clapham fall within Wandsworth) |
|---|---|
| Conservation area | Clapham Conservation Area — appraisal adopted 1968 (extended to 2002) |
| 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 → |
A whole-house refurbishment in Clapham is planned as one project, not a run of separate rooms decided as you reach them. On a two-storey bay-fronted Victorian terrace the choices that matter most are the ones you never see afterwards: where the steel goes when the ground floor is opened up, how the heating, drainage and electrics are re-run through a house that was never designed for them, and which walls have to carry acoustic or fire separation. Set those in the wrong order and later trades unpick earlier ones — a soil stack boxed in before a beam is finalised, a floor screeded before the underfloor pipework is agreed. We draw the house as a whole first, fix the beam positions and service routes against every intended change, and only then let the finishes follow. That coordination is exactly what a refurbishment buys over a room-by-room approach, and it is where the money is either saved or wasted.
Clapham's period stock sets the fabric you are working with, and each type carries features worth keeping. The Georgian houses of the Old Town, the double-fronted villas facing the Common and the bay-fronted terraces running through the Abbeville streets all bring sash windows and their boxes, cornicing and ceiling roses, panelled doors, and the original rear wing that steps down behind the main house. A considered refurbishment repairs and reinstates these rather than stripping them out — matching a moulding profile, easing and draught-proofing a sash rather than replacing the whole window, keeping the front elevation's rhythm intact where it faces the street. Where the property sits within one of the district's conservation areas, that retention is not only good practice; it is part of what any consent, and any future buyer, will judge the work against. We survey what survives before deciding what to change.
The single-brick and solid-wall construction of a Victorian terrace is where refurbishment becomes genuinely technical. These walls have no cavity, so improving their thermal performance means either lining them internally, which eats floor area and has to be detailed to avoid trapping moisture, or working externally, which is rarely acceptable on a visible period elevation in a conservation setting. Solid walls also breathe, and wrapping them in the wrong, vapour-closed materials can drive damp into the fabric rather than letting it out, showing up months later as blown plaster or rotting joist ends. We set an insulation and ventilation strategy for the whole envelope early — the walls, the roof, the suspended timber floors and the rear wing — so the house ends up warmer and quieter without condensation or decay building up behind the new finishes. It is a balance, not a default of lining everything.
Renewed services are the backbone of a refurbishment and the part most often under-planned. A full scheme usually re-runs the heating, rewires from the consumer unit, replaces waste and supply pipework, adds mechanical ventilation to bathrooms and the kitchen, and improves the acoustic separation between floors or, in a conversion, between flats. None of these first-fix decisions is independent of the structure: a beam dropped to open up a reception room dictates where pipes and ducts can pass, and a relocated soil stack cannot simply move without new drainage falls below it. We schedule the services against the structural drawings so the builder installs each layer once, in the right sequence, rather than chasing pipes and cables through walls that have already been plastered and floors that have already been laid. Coordinating that first fix on paper is far cheaper than discovering the clash on site.
Tenure changes a refurbishment as much as fabric does. A large share of Clapham's period houses have been converted into flats and maisonettes, and a leaseholder's project runs on entirely different rails from a freehold whole-house scheme. Structural alterations, moving a bathroom over a neighbour's living room, or penetrating a party wall usually need the freeholder's formal consent — a licence to alter — as well as building control, and final permission rests with both the freeholder and, where consent is required, the council. Acoustic separation between the flats stops being a nicety and becomes a live obligation, and a stripped-back floor is the one real chance to build it in. We establish what your lease and the shared structure actually allow before the design commits to an outcome the freeholder will not sign off, because reworking a scheme after refusal is slow and expensive.
A refurbishment is only ever as good as the information the builder prices from. We produce measured survey drawings, a specification and a schedule of works that make every decision visible — which walls move and which are retained, the service routes, the finishes and the order of trades — so competing quotes are comparable and the contingency is a real allowance rather than a guess. Where a whole-house scheme also touches a rear extension, a loft or a basement, we sequence those elements so the structure and services are designed once, not twice; the detailed constraints of each sit on their own page rather than being repeated here. And on an occupied house we plan the works in phases, room by room or floor by floor, so the household can either stay put or decant on a known, costed timetable instead of an open-ended one.
Local analysis
Separate internal-only works from external change that needs planning. On multi-lease buildings, freeholder consent sits beside building regulations. Survey structure and services before open-plan ambitions freeze.
Most Clapham refurbishments have to solve the solid wall. With no cavity to fill, insulation goes on the inside — a lined build-up of insulation and plasterboard — because the external face is period brick or render that a conservation area will expect to keep. Internal lining is effective but unforgiving: it moves the dew point into the wall, so the make-up has to manage water vapour, and the buried ends of timber floor joists need attention or they can rot where the new lining meets cold masonry. We detail those junctions, choose breathable materials suited to older brick, and weigh the thermal gain against the lost floor area and the moisture risk, rather than lining every wall as a matter of course. Where a wall backs onto an unheated space or a neighbour, the priorities differ again, so the strategy is worked out room by room across the whole envelope.
Refurbishing a converted-house flat is a different exercise from a whole freehold house. The leaseholder controls the inside of the demise, but the structure, the party walls and often the drainage are shared, so opening up a room, moving a wet area or altering the layout usually needs a licence to alter from the freeholder alongside building control. Sound is central to it: current standards expect meaningful airborne and impact separation between dwellings, and a stripped-back floor is the one real chance to build that in properly. We map what the lease and the shared structure permit, set the acoustic build-up for the floors and party walls, and prepare the drawings the freeholder's surveyor will want to review before granting consent. Getting that consent package right the first time is usually what keeps a leasehold refurbishment on programme.
The value of treating the house as one project shows up in the programme. On a full refurbishment the trades follow a strict order — strip out, structural openings, first-fix services, insulation and plastering, then second fix and finishes — and a decision taken late forces earlier work to be undone. We sequence the drawings to that order, so the structural openings and service routes are settled before anything is closed up, and we flag the long-lead items — bespoke joinery, replacement sash windows, a made-to-order staircase — early enough to order them without stalling the site. On an occupied home we phase the works room by room, or arrange a decant, so the household has a clear, costed timetable instead of an open-ended disruption.
Thinking about a project in Clapham?
Send the address and a short description. We will confirm the likely approval route and the drawings your project needs.
Local planning
Much of a whole-house refurbishment is internal, and internal alterations to an unlisted house usually fall outside planning control — though the building regulations still apply to structure, drainage, insulation, ventilation, fire safety and stairs. Planning permission becomes relevant when the work changes the external appearance, alters the use, or the property lies within one of Clapham's conservation areas, where changes that would otherwise be permitted can be restricted or withdrawn. Because those designations turn on the exact address rather than the neighbourhood, we confirm the position for your specific house before assuming any particular route, and we treat internal reconfiguration and any external change as two separate questions.
Clapham sits mainly within the London Borough of Lambeth, and Lambeth's planners are the usual audience for any application here. The district's boundary runs close to Wandsworth, however, so the correct authority should be confirmed for a specific address rather than assumed from the postcode. Local knowledge and the repo's own prose point to conservation areas covering large parts of the district — around Clapham Common, the Old Town and the Abbeville streets — but their boundaries are specific, and both the designation and any Article 4 direction that might restrict otherwise-permitted changes should be checked for your exact property before a scope is fixed.
Two further processes commonly run alongside a refurbishment. Where the works cut new beam pockets into a party wall, remove a chimney breast, or alter shared structure, the Party Wall etc. Act 1996 applies and notices go to the affected neighbours, separately from any planning or building-control decision. And where the property is a flat in a converted house, structural or layout changes usually need the freeholder's licence to alter as well as building regulations approval, with final permission resting on both the freeholder and, where consent is required, the council. We map these strands at the outset so none of them surfaces late enough to stall the build.
Where a Clapham refurbishment sits within a conservation area, the features that give the terrace its character — the rhythm of bay windows along the street, the roofline and chimneys, the original rear wings and the garden settings behind — are treated as part of what the designation protects. Internal work is generally less constrained, but changes visible from the street, or that erode that shared rhythm, carry more weight, so retaining and repairing period fabric usually reads better at any consent stage than replacing it. The precise boundary and any Article 4 direction should be confirmed for the exact address.
None of Clapham's conservation designations prevents a refurbishment; they raise the bar on anything externally visible and on the loss of historic fabric. A scheme that repairs sashes, matches moulding profiles and keeps the front elevation legible is far easier to support than one that strips a house back to a blank canvas, and it protects the value that the period character carries in the first place.
For the wider local-authority picture — policies, timescales and application routes — see planning in Lambeth.
Services
Extensions & Renovations
Planning & Consents
Technical & Building Regulations
Leasehold & Licence to Alter
Nearby
Send us your Clapham address and a short description of the refurbishment you have in mind — a full renewal, a ground-floor reconfiguration, or a leasehold flat. We will confirm the correct authority and any conservation or Article 4 constraints, establish what your tenure and shared structure allow, and set out the drawings, consents and schedule of works your project will need before a builder can price it.
