Flat
refurbishment
in St James's, SW1
Architects, Engineers, Surveyors & Builders Under One Roof.
One Studio. One Contract. One Team.
Independent surveying by our sister practice, Hampstead Chartered Surveyors (RICS Firm No. 923064)For flat refurbishment in St James's, plan the rooms alongside the building they belong to. Consider services, floor finishes and fitted interiors together with the lease, shared access and retained features.
Flat Refurbishment in St James's: What You Need to Know
For a flat in St James's, read the lease and identify the landlord or managing agent before agreeing alterations. Written consent or a Licence to Alter is required where the lease and proposed work call for it; do not assume the same requirements for every building. Check shared floors, walls, service routes and access conditions. Planning and listed-building requirements are separate checks with Westminster.
Historic quarter between Piccadilly and The Mall. Crown Estate and Duchy of Cornwall properties. Grade I and II listed buildings throughout. Westminster's most heritage-sensitive area. A full refurbishment in St James's coordinates the layout, services and finishes with the condition of the building. The agreed scope determines what is retained, repaired or replaced, including the treatment of original period features.
Our St James's refurbishment projects are managed through a single point of contact, coordinating architects, structural engineers, M&E specialists, and specialist subcontractors. We work within Westminster's planning and building control requirements against the agreed scope and programme.
St James's residential character sits above its famous ground floor, and a flat refurbishment here is led firmly by consents and logistics. Its homes are largely mansion flats, period chambers and upper-floor conversions — many listed, above the galleries, clubs and shops — where structure, acoustics and managing-agent consents are central to the work.
The controls are among the tightest anywhere. St James's sits within its conservation area on the historic streets between St James's Park and Piccadilly; Westminster scrutinises external change exceptionally closely, much of the area is listed, and the prestige mixed-use ground floor and tight streets shape every project. Jermyn Street and King Street carry period buildings with flats and chambers above, while Duke Street and the streets towards Pall Mall add mansion flats and upper-floor conversions.
Measured against Westminster, a flat refurbishment is £60,000–£110,000 excluding VAT, confirmed once the lease, listing and restricted access are scoped.
Retained interiors and shared building services
For a St James's apartment, survey the retained plasterwork and doors alongside the existing service routes. Coordinate kitchen and bathroom positions with the floor construction and lease conditions, and measure the delivery route through any shared entrance or staircase.
What a Flat Refurbishment Involves
Refurbishing a flat means renovating inside a building you share — so the job is as much about leases, neighbours and building rules as it is about kitchens and finishes. We plan every project around the consents your lease demands and the protocols your block expects, then deliver the technical work under one fixed-price contract. A typical scope covers the elements below.
- Licence to Alter — lease review, application pack and freeholder’s surveyor queries handled on your behalf
- Acoustic build-up — separating floors and walls upgraded to meet Building Regulations Part E and any stricter freeholder schedule
- Wet-room tanking — certified waterproofing beneath every bathroom, flood-tested before tiling and covered by a 12-month defects period
- Rewire & replumb — new circuits, pipework and heating, coordinated with the building’s risers and stacks
- Layout changes — internal openings engineered, approved by building control and cleared with the freeholder where the lease allows
- Kitchens & bathrooms — designed, supplied and fitted to the specification tier you select
- Period detail — cornicing, sash windows and fireplaces retained and repaired in conversion flats
- Block protocols — lift protection, booked deliveries, restricted noisy hours and daily cleaning of communal areas
How We Run Your Project
Six stages, with the consent requirements and their effect on the programme considered before work starts.
- Survey & lease review — we measure the flat, inspect the services and read your lease to identify exactly which consents apply.
- Design & consents — our architects develop the layout while the Licence to Alter application runs in parallel, not afterwards.
- Fixed-price contract — an itemised specification agreed in full, with the acoustic and tanking details written in.
- Strip-out & first fix — soft strip, structural openings, cabling, pipework and the acoustic carcass, all removed and delivered through agreed routes.
- Second fix & finishes — kitchen, bathrooms, joinery, flooring and decoration.
- Testing & handover — snagging, certification and reinstatement of any communal areas before the keys come back to you.
Read the full flat refurbishment guide for flat typologies, specification tiers and the Licence to Alter process in detail.
Read the lease and identify any required freeholder consent or Licence to Alter for the proposed work before it is programmed. Planning permission, listed-building consent and Building Regulations are separate checks. Flats do not share the householder permitted-development rights available to houses, but that does not mean every external repair needs an application: like-for-like window replacement may not need planning permission, subject to the property and local requirements. Check the actual alteration, including any effect on a listed building's special interest. Our planning guide library explains the separate approval routes.
Why Hampstead Renovations
Flat refurbishment rewards a team that already knows what freeholders and managing agents will ask for. Design is led by our in-house RIBA Chartered Architects, lease and party-structure matters are supported by RICS surveying through our sister company, Hampstead Chartered Surveyors, and the build is carried out by our own long-standing teams. Every contract is fixed-price on JCT terms, backed by £10M public liability insurance — the level major London freeholders require — plus a 12-month defects period. Enquire before 2pm on a weekday and we will call you back the same day.
What does a flat refurbishment cost in St James's?
A flat refurbishment in St James's runs £900–£1,700/sqm excluding VAT, and a full two-bedroom refurbishment typically lands between £60,000 and £110,000. Most programmes take 16–32 weeks on site. A written scope and site assessment are needed before any project price can be fixed.
| Scope of work | Guide rate | Typical total |
|---|---|---|
| Full flat refurbishment (2-bed) | £900–£1,700/sqm | £60,000–£110,000 |
| Typical programme | 16–32 weeks on site | |
Guide rates exclude VAT and are set by depth of work, not by property type. Compare scopes in our London refurbishment cost-per-square-metre guide.
Flat Refurbishment in St James's: Questions
What kind of homes are refurbished in St James's?
Largely mansion flats, period chambers and upper-floor conversions, many of them listed and set above the famous galleries, clubs and shops — so refurbishment here is led by consents and logistics rather than by the finishes alone.
Is St James's in a conservation area?
It is, and a strict one. St James's sits within its conservation area on the historic streets between St James's Park and Piccadilly, Westminster scrutinises external change exceptionally closely, and much of the area is listed.
How much does a flat refurbishment cost in St James's?
A St James's flat carries a band spanning £60,000–£110,000 excluding VAT, with borough house renovations covering £90,000 to £475,000 excluding VAT. Listing, the lease and restricted access then set the figure.
What drives the budget on a St James's flat?
Estate and leasehold coordination, party-wall awards, protected facades, restricted access and careful temporary works, plus structural openings in older townhouses and the level of detailing expected around SW1 mansion flats and historic streets.
Which St James's streets do you work on?
Jermyn Street and King Street carry period buildings with flats and chambers above the shops and galleries; Duke Street and the streets towards Pall Mall add mansion flats and upper-floor conversions in a strictly-protected setting.
Relevant Completed Flat Refurbishment Projects
Local character & heritage: renovating flats in St James's
St James's sits in the City of Westminster, and a large share of its homes are leasehold flats — within historic townhouses, gentlemen's clubs and shops in London's most traditional quarter. Refurbishing one is a full interior project: reconfiguring the layout, renewing services and finishes, and often combining or reworking rooms within the existing footprint.
The work runs under the lease, so the freeholder's or managing agent's consent sits alongside Building Regulations and party-wall notices may be needed for qualifying work; external elements such as windows stay controlled in conservation areas. Because the area is overwhelmingly listed and largely commercial, we coordinate the lease, the freeholder and the build as one fixed-price contract.
St James's heritage & architecture: Renovating a flat · Kitchens in period flats · Licence to alter · Mansion flats · Roof developments & conservation · Conservation areas
Flat Refurbishment in St James’s: Planning & Local Context
Westminster City Council · SW1
Planning for flat refurbishment in St James’s
Flat refurbishment in St James’s sits across two consent regimes: Westminster City Council for planning and building control, and your freeholder for a licence to alter covering structural changes, new services and floor build-ups — essential within St James’s's conservation areas and most mansion blocks.
Westminster City Council context
Check the address and proposed work with Westminster. Confirm the conservation-area boundary, any Article 4 direction and whether the building is listed. Listed-building consent may be required for alterations affecting its special interest, including internal work. An Article 4 direction applies to specified properties and types of development; it does not make every refurbishment a planning application. Assess Building Regulations and any lease or estate consent separately.
Building Regulations
Flat Refurbishment in St James’s must satisfy Building Regulations — covering sound insulation to Part E, fire compartmentation to Part B, and certified electrical and plumbing works. Our in-house engineers manage Building Control from initial notice to completion certificate.
Recent work & local links
Explore our other St James’s services — Kitchen Renovation Loft Conversions — or the St James’s renovation hub.
Planning and building-control submissions follow the address and agreed scope. View our planning track record →
Guides & Local Reading
Flat Refurbishment in Nearby Areas
More Services in St James's
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We survey your property, discuss your vision and provide a clear budget framework.