South Hampstead · Houses, flats & bathrooms
Retain the character. Make room for everyday life.
From whole period houses to flats in divided houses and mansion blocks, we repair original windows, terracotta and joinery, rework bathrooms, plan for sound between flats and protect shared halls and stairs. Below: examples with their locations, our six steps and a free feasibility visit.
Serving South Hampstead from our Hampstead studio · NW3 6DN
020 7101 3168
Updated 15 October 2026
Start with your project
Start with the page that fits the job: a house kept whole, a flat (in a divided house or a mansion block), or a bathroom on its own. For shelving, wardrobes and cupboards fitted around original features, see our bespoke joinery service.
01 Period houses and whole-home work
Keep the house whole and plan it as one project. Record the windows, terracotta, joinery and floors first, decide what to repair, then change the rooms and services around them.
02 Mansion flats and converted homes
Where a house has been split into flats, or in a mansion block, the floor you stand on is often the ceiling of the home below. Settle sound, shared stacks and how the communal stair is kept protected alongside the new layout.
03 Standalone bathrooms welcome
A standalone bathroom renovation, or one within a wider project. Where the bathroom sits over another home, the drainage fall, the floor build-up and keeping water and noise from the rooms below come first.
Space, light and considered storage
Considering more space or a better use of existing rooms in South Hampstead? Compare loft conversion, house extension and bespoke joinery options with the building, ownership and local controls before fixing the brief.
Explore a loft bedroom, home office or flexible family space in South Hampstead, with the new stair and room layout shaped around the existing roof.
Record decorative roof features and whether the proposed work faces the street. The June 2026 factsheet distinguishes front/street-facing side changes from rear work.
A rooflight and an enlarged roof require separate eligibility checks, and the factsheet distinguishes houses from flats. Use the operative property map and schedule.
Plan a South Hampstead extension for a better kitchen, dining area or family room, bringing together the existing house, garden access and the way you want to live.
Show the addition with retained garden space and the relationship between houses, rather than treating a gap as automatically available for building.
Record neighbouring openings, existing additions and proposed structural work. Identify any qualifying Party Wall procedure from that scope.
Add fitted wardrobes, alcove cupboards, shelves and utility storage to your South Hampstead home, with the room’s proportions, everyday use and retained details guiding the specification.
Record the existing timber profiles and check the current direction before altering controlled exterior details; distinguish repair from a changed specification.
Plan wardrobes, alcoves and utility storage around retained features. Listed-building and lease questions remain separate from ordinary furniture choices.
Tell us how you want to use the space, what needs to stay and which drawings or permissions you already have. A measured brief can connect the roof or extension layout with stairs, storage, lighting and joinery before specifications are priced.
Real projects, clearly located
Three published projects and where they are: Belsize Park Gardens, NW3 (a whole house), Chesterfield Street, Mayfair (an apartment) and St George’s Square, Pimlico (a bathroom). None of them is in South Hampstead.
Whole-house refurbishment · Belsize Park, NW3
Full-house refurbishment in Belsize Park with basement, extension and loft works.
Conservation Area · 5 Storeys · Documented programme: 12 months
Documentary programme, not verified elapsed construction time or a timetable for another project.
View the project
Apartment refurbishment · Chesterfield Street, Mayfair
Apartment refurbishment on Chesterfield Street in Mayfair.
View the project
Bathroom within an apartment refurbishment · Pimlico
Marble bathroom and vanity cabinetry within the published St George's Square apartment refurbishment in Pimlico.
View the projectAlso published, and described here in text: Victorian Townhouse, Maida Vale: Whole-house refurbishment of a Victorian townhouse in Maida Vale, with structural reconfiguration, services renewal and retained period details. Mansion Flat Refurbishment, St John's Wood: Mansion-flat refurbishment with walnut and lacquer cabinetry in St John's Wood.
Six stages, start to finish
Every South Hampstead job, large or small, runs in this order. See how each stage applies on the house, flat or bathroom page.
Send a few lines through the form below, by email or by phone; the list under these steps shows what helps.
We look at which original details survive, what you would like to alter and what looks feasible.
Windows, terracotta, cornices and joinery are recorded for repair, and any front change is first checked against Camden’s June 2026 Article 4 schedule.
Our plans come from our own architects and structural engineers, covering floor build-ups, sound between flats and bathroom pipe routes.
A fixed written price and a JCT contract follow the survey, scope and specification.
Shared halls and stairs protected; neighbours told before noisy stages. Completed work carries a 12-month defects-rectification period under the JCT contract terms.
Our Hampstead base, serving South Hampstead
South Hampstead is served from our studio at Unit 3, Palace Court, 250 Finchley Road, NW3 6DN. If you have a lease, drawings or letters from Camden, bring them to the first conversation.
Office hours are Monday to Friday, 8am to 6pm, and Saturday, 9am to 1pm. The short form below books a free feasibility visit; you can also phone 020 7101 3168.
Book a free feasibility visit020 7101 3168
contact@hampsteadrenovations.co.uk
Book a free feasibility visit
We reply within one working day, Monday to Friday, 8am to 6pm.
Or call 020 7101 3168
Local knowledge with a purpose
A red-brick house, a converted villa and a mansion flat can call for different renovation decisions. Start with the actual building, its shared arrangements and the features that give it character.
Further down: how the four approvals differ · the Article 4 direction and the Local Plan · windows, bathrooms, floors and lower-ground rooms · the route in, skips and noise hours · making quotations comparable · questions owners ask
Camden’s South Hampstead appraisal describes late-Victorian terraces and semi-detached houses in red and cream-coloured gault brick, with decorative terracotta, tiled paths and varied roof details. Record the condition of surviving windows, doors, masonry and joinery before deciding what to retain, repair or replace.
South Hampstead conservation appraisal, February 2011
The appraisal distinguishes the mansion blocks and tighter development east of Fairhazel Gardens from larger houses elsewhere in the conservation area. Front gardens, boundary walls, trees and rear garden spaces also contribute to its character. For a flat, add the lease, common access and shared services to the survey brief.
South Hampstead conservation appraisal, February 2011 · LEASE: alterations and home improvements
A new interior does not require one standard treatment of every period home. Identify the rooms that need repair, the layout changes you want and any exterior work separately. An existing conversion or neighbouring extension does not establish what is acceptable at your address.
When planning permission is required · South Hampstead conservation area and appraisal
The first local check
Use the council lookup and conservation boundary map, then check the individual listing, Article 4 schedule and planning history. South Hampstead is the service area; an NW6 postcode does not establish the local authority, conservation boundary or consent route for every property.
Separate checks, one coordinated brief
Planning permission, checked against the June 2026 Article 4 direction for front changes, is separate from listed building consent, the lease for a flat and Building Regulations. Passing one does not settle another.
Which parts of the proposal need a planning assessment?
Ordinary internal alterations generally do not need planning permission. Extensions, external changes and changes of use need a separate assessment. The Part 1 householder permitted-development rights do not apply to flats; for houses, check the limits, previous conditions and any Article 4 direction before relying on them.
When planning permission is required · Householder permitted development technical guidance · Camden Article 4 directions: South Hampstead June 2026 entry
Could the work affect a listed building’s special interest?
Check the individual listing before removing or altering historic fabric. Listed-building consent can apply to internal work that affects special architectural or historic interest, as well as exterior changes. Conservation-area designation is a different control; neither designation nor a new bathroom creates one universal consent answer.
Historic England: listed-building consent · South Hampstead conservation area and appraisal
What approval and completion records will the work need?
Structural changes, drainage, ventilation, electrical work and other parts of a refurbishment can engage Building Regulations. Agree the applicable building-control or competent-person routes, inspection stages and completion records. Planning permission and landlord consent do not replace these separate requirements.
What does the lease allow, and is Party Wall work involved?
Read the lease for any required written landlord consent and conditions on floors, services and common areas. Separately identify work that engages the Party Wall Act, including qualifying work to shared structures or nearby excavation. A Licence to Alter or Party Wall award is not automatically required for every bathroom refit.
LEASE: alterations and home improvements · Party-wall work requiring notice
Local facts that affect the brief
Camden’s appraisal records that the conservation area was formerly called Swiss Cottage. Use the South Hampstead boundary map rather than treating the wider neighbourhood as one designation. The council continues to publish the 2011 appraisal, but its historic policy references should be read alongside current planning documents.
South Hampstead conservation area and appraisal · South Hampstead conservation appraisal, February 2011 · South Hampstead conservation boundary map
Camden’s current Article 4 index links a South Hampstead direction and map, with an updated June 2026 factsheet under the former Swiss Cottage name. Match the property and proposed work to the operative schedule. The direction removes specified permitted development rights; it does not mean every internal alteration needs planning permission.
Camden Article 4 directions: South Hampstead June 2026 entry · South Hampstead Article 4 direction and affected-property map · Swiss Cottage/South Hampstead Article 4 factsheet, updated June 2026
The factsheet distinguishes repair from changes to front and street-facing windows, doors, roof details, boundaries and hard surfaces. Check the proposed material, profile, opening method and location before ordering replacements. Repair, matching replacement and double-glazing proposals are not interchangeable consent questions.
Swiss Cottage/South Hampstead Article 4 factsheet, updated June 2026
Camden identifies the Local Plan adopted on 3 July 2017 as its current plan. Its replacement remains in examination: the council’s latest published examination update, dated 20 August 2026, describes the Inspector’s next steps. A draft policy is not an adopted replacement.
Current Camden Local Plan, adopted 3 July 2017 · Replacement Camden Local Plan: examination news
Camden’s supplementary guidance includes home improvements, energy efficiency and basements. Use the current guidance for the proposal alongside the development plan and conservation controls, rather than relying on the older policy references in the area appraisal.
For a new or extended basement, Camden requires a site-specific Basement Impact Assessment addressing drainage, flooding, groundwater and structural stability. Refitting a bathroom within existing lower-ground accommodation is a different brief from lowering a floor, extending below ground or forming a lightwell. Establish the actual works and necessary investigations before assuming feasibility.
Camden basement development and site-specific impact assessments · When Building Regulations approval is needed · Party-wall work requiring notice
Confirm the consent route before ordering external windows, changing roof details or committing to excavation. Keep planning, listed-building consent, Building Regulations, lease permissions and qualifying neighbour notices distinct; a pre-application discussion is not a granted approval.
Camden Article 4 directions: South Hampstead June 2026 entry · Historic England: listed-building consent · When Building Regulations approval is needed · LEASE: alterations and home improvements · Party-wall work requiring notice
Local guidance checked . The linked sources help you prepare a brief; requirements depend on the address, building and complete proposal.
From retained details to shared services
Record frame condition and existing profiles before comparing repair, draught-proofing, secondary glazing or replacement. Check the applicable Article 4 documents and any listing. A similar colour or general appearance alone does not establish that a new window follows the same consent route.
Swiss Cottage/South Hampstead Article 4 factsheet, updated June 2026 · Historic England: listed-building consent · Camden supplementary planning and home retrofit guidance
Trace water, waste and extract routes before fixing the room layout. Coordinate the wet-area build-up, ventilation and accessible service connections, and investigate leaks rather than covering them. In a flat, check rights and arrangements before altering shared drainage or isolating supplies.
When Building Regulations approval is needed · LEASE: alterations and home improvements
Assess the existing floor before specifying heavy tiles, stone or a different finish. Bring structural capacity, acoustic requirements and lease conditions into the same decision. Approved Document E concerns relevant building work; it is not a universal floor specification for every existing flat.
GOV.UK: Approved Document E, resistance to sound · When Building Regulations approval is needed · LEASE: alterations and home improvements
Check tree preservation orders and conservation-area tree controls before pruning, excavation or material storage. Conservation-area notice rules have thresholds and exceptions. Consider drainage when changing a front surface, and check both the national paving conditions and any locally withdrawn rights.
Tree preservation orders and conservation-area trees · GOV.UK: householder guidance, front-garden surfaces (Class F) · Swiss Cottage/South Hampstead Article 4 factsheet, updated June 2026
Inspect drainage, moisture and existing ground levels before fitting out lower-ground rooms. For a new or extended basement, scope the investigations with the relevant professionals and Camden’s BIA requirements. An area-level flood check or a neighbouring basement does not establish the condition or suitability of your site.
Camden basement development and site-specific impact assessments · Check long-term flood risk in England
Coordinate heating, insulation, ventilation and moisture control rather than treating each measure independently. Use Camden’s retrofit guidance and a fabric-sensitive approach for period homes. Check whether external grilles, plant or window changes need permissions before finalising the specification.
Historic England: a whole-building approach · Camden supplementary planning and home retrofit guidance · Camden Article 4 directions: South Hampstead June 2026 entry
A practical plan for the street and building
Measure entrance, stair and delivery access and agree protection of shared areas. Camden requires a skip-company application for a skip on a public road; a parking-bay suspension is separate where a bay is occupied, and skips cannot go on the pavement. Scaffolds and other highway occupation have their own licence route. Confirm the authority and lawful arrangements for the actual frontage.
Camden skip licences · Camden parking-bay suspensions · Camden building licences for highway occupation · LEASE: alterations and home improvements
Camden permits noisy building work without special authorisation from 8am to 6pm Monday to Friday and 8am to 1pm Saturday. Authorisation is needed outside those hours, including Sundays and bank holidays. Check any tighter building or site conditions, then agree neighbour contact, service isolation and temporary facilities if the home stays occupied.
Camden noisy building work and authorisation · LEASE: alterations and home improvements
A clear scope before a price
A useful quotation starts with the condition of the property and a defined scope. Separate room refurbishment from structural, exterior and shared-building work so the important allowances can be compared.
Identify repairs and the questions that need investigation before they become construction assumptions.
Describe the house, flat or bathroom work in enough detail for quotations to cover the same scope.
Include the professional input and building arrangements that the actual proposal requires.
Make responsibilities and undecided items visible before agreeing the contract and programme.
A South Hampstead address does not establish a fixed conservation premium or programme. Ask how investigations, professional fees, permissions, access and unknown conditions are treated. A standalone bathroom needs its own room-specific quotation, even when examples elsewhere involve a larger refurbishment.
Questions before you begin
Yes. A family bathroom, en-suite or wet room can be discussed as a focused project, as well as part of a larger refurbishment. Send the room dimensions, photographs and existing layout. Tell us about shared services and whether it is your only bathroom so practical arrangements can be discussed.
Camden’s South Hampstead appraisal records the former Swiss Cottage conservation-area name. Some council Article 4 factsheets still use it. Check the published boundary map and the full address; neither the neighbourhood name nor the whole NW6 postcode defines conservation coverage.
South Hampstead conservation area and appraisal · South Hampstead conservation boundary map · Camden Article 4 directions: South Hampstead June 2026 entry
Camden’s current index lists South Hampstead with an adoption date of 9 June 2026 and links the direction, map and updated factsheet. Check which property and development right the schedule covers. Specified exterior changes can need permission even where householder rights might otherwise apply; it is not a blanket rule for every internal refit.
Camden Article 4 directions: South Hampstead June 2026 entry · South Hampstead Article 4 direction and affected-property map · Swiss Cottage/South Hampstead Article 4 factsheet, updated June 2026
Assess repair and energy-improvement options before ordering replacements. Camden’s factsheet distinguishes changes by location and by details such as material, profile and opening method. Check the operative direction and any listing for your property; matching colour alone or calling the work an energy upgrade does not settle the permission question.
Swiss Cottage/South Hampstead Article 4 factsheet, updated June 2026 · South Hampstead Article 4 direction and affected-property map · Historic England: listed-building consent · Camden supplementary planning and home retrofit guidance
Ordinary internal alterations generally do not, but a flat does not have the Part 1 householder permitted-development rights available to houses. External changes and changes of use need separate checks. Listed-building special interest, Building Regulations and any required lease consent still need consideration.
When planning permission is required · Householder permitted development technical guidance · Historic England: listed-building consent · When Building Regulations approval is needed · LEASE: alterations and home improvements
Establish the wall’s function and the floor construction rather than assuming they can be altered. Trace water, waste and ventilation routes, including shared connections in a flat. Check lease conditions, relevant Building Regulations and whether the work engages Party Wall procedures before finalising the layout.
When Building Regulations approval is needed · LEASE: alterations and home improvements · Party-wall work requiring notice · GOV.UK: Approved Document E, resistance to sound
A refit within existing accommodation is different from creating or extending a basement. Camden requires a site-specific BIA for proposed new or extended basement development. If the scope includes excavation, floor lowering or a new lightwell, establish the relevant planning and technical requirements before proceeding.
Camden basement development and site-specific impact assessments · When Building Regulations approval is needed
Camden’s normal hours for noisy building work without special authorisation are 8am–6pm Monday to Friday and 8am–1pm Saturday. Work outside those hours, including Sundays and bank holidays, needs authorisation. Check any tighter building or site conditions and agree neighbour communication before work starts.
Yes, and Camden’s June 2026 Article 4 factsheet encourages it. It says original tiled paths should be retained and repaired. For the properties the direction covers, removing or altering decorative brick, terracotta or stone at the front needs planning permission, while repairing a front wall, gate or railings does not if the size, materials and design match.
Swiss Cottage/South Hampstead Article 4 factsheet, updated June 2026 · South Hampstead conservation appraisal, February 2011 · South Hampstead Article 4 direction and affected-property map
Yes. Bookcases, wardrobes and alcove cupboards can be drawn around chimney breasts, cornices and skirtings once the room has been measured. The joinery can be included in a wider refurbishment or ordered separately through our bespoke joinery service.
Go deeper where it matters
Explore the relevant property guide, then check the current official sources above for your address and proposed work.
Connect rooms, retained details and building services in one scope.
Read moreWork through the practical questions for your flat and shared building.
Read moreOrganise the lease, building and permission questions before altering a flat.
Read moreSet out the fittings, service routes and decisions for a focused bathroom project.
Read moreExplore scope, surveys, sequencing and budget preparation.
Read moreConsider apartment design and the building’s practical constraints.
Read morePlan layouts, wet-area details and the fitting sequence.
Read moreCoordinate fitted storage with retained details and service access.
Read moreUse the calculator to frame a discussion before refining the scope.
Read moreRead the separate Hampstead area guide and its existing service routes.
Read moreOne team, one contract — from feasibility drawing to handover photograph. RIBA chartered architects, IStructE chartered engineers, surveying support through Hampstead Chartered Surveyors, and our own build teams, all under a fixed-price design-build contract.
View Our South Hampstead Builders PageSee how South Hampstead fits within our wider Prime North London refurbishment service — house, flat and apartment refurbishment, extensions, lofts, basements and listed work under one team.
Custom South Hampstead pages for every service — each written for NW6 and the London Borough of Camden. All prices in pounds sterling (GBP).
Explore 13 service routes for South Hampstead properties, grouped by project type and delivered by the same design-build team.