Hampstead NW3 · Our own teams
House Extension in Hampstead — Rear, Side-Return & Wraparound
Hampstead Renovations delivers house extensions in Hampstead NW3 with its own teams, from a kitchen extension to a wider addition. Tell us which rooms you want to gain or change.
No account needed. Send a short enquiry and we will confirm the next step.
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How we can help
- Kitchen extensions opening onto the garden
- Rear, side-return and wraparound additions
- Structure, drainage and waterproof junctions
How pricing works
The price depends on the footprint, structure and glazing, plus the ground and drainage conditions on site. The quote says whether the price includes a full kitchen fit-out. Anything that depends on a consent decision or a party wall agreement is recorded in the written scope.
Your next step
Send the postcode and photographs of the rear of the house and any side passage. Say whether you hold drawings, and whether the kitchen is the main aim. We will reply with availability and the next step, whether that is a survey, design input or a consent check.
House extensions in Hampstead that respect the existing house
An extension in Hampstead has to meet an existing house that may already carry several phases of change. Traditional masonry, stucco and timber joinery can sit beside later additions, and the junction between old and new needs particular care. Plot size varies too, from compact sites to larger plots near the Heath. We record the existing structure, levels and drainage first, so the extension is designed around facts rather than assumptions.
An extension raises more consent questions than most home projects. In a conservation area, some permitted development rights are narrower, and Camden’s Article 4 schedules may restrict more. Listed status, including any curtilage structures, must be confirmed. Building Regulations approval is a separate process covering structure, drainage, fire and energy. Foundations near a neighbour’s building can engage the Party Wall etc. Act. We establish each position for the exact address before design work is committed.
Building an extension on a Hampstead street takes careful logistics. Excavated soil, concrete, blocks and steel all need a route, and slopes or narrow access can rule out large vehicles. We check skip or grab lorry positions, scaffold licences and parking suspensions with the relevant authority. Where the only access is through the house, we plan protection for floors, walls and joinery along it. Neighbours are told what to expect before work begins.
A good extension brief explains how the house should work afterwards, not just the size of the new room. Include existing drawings, any planning history, a site survey if you hold one, and how the household will live during the build. Hampstead Renovations coordinates the approvals route and carries out construction in-house. The written scope separates each stage, shows what depends on a consent decision, and names who approves changes on site.
The process
How house extension is scoped in Hampstead
Capture the Hampstead problem clearly
Describe the house extension you need, what has already been tried, and whether the property is occupied on the local stock type recorded for Hampstead.
Photograph fabric and access
Send close-up and wide photographs plus the full NW3 unit postcode for Hampstead. Include access notes (floor, parking, freeholder rules) when tools or materials must reach the work.
Submit a private brief
Use the online brief or call. We review the job details, access, any permissions needed and availability before arranging work in Hampstead.
Receive a written next step
We set out the agreed house extension and price in writing for your property in Hampstead. We confirm a booking after the scope and availability are agreed.
Programme and complete under written terms
When accepted, works are sequenced for Hampstead access and occupancy under Hampstead Renovations or Hampstead Maintenance, with snagging as agreed in writing.
How we scope house extension for Hampstead homes
Tell us what you need at your Hampstead property. We assess the work, access and team availability before agreeing a visit.
House extensions across Hampstead and London — rear, side-return and wraparound forms with planning, structure and build coordinated in-house. For Victorian and Edwardian terraces and detached houses in Hampstead, describe the existing condition and any access restrictions so we can assess the work.
House extension briefs in Hampstead are reviewed for structure, drainage, neighbour notice and design input before a build price basis is fixed on period houses and terraces.
Rear, side-return and wraparound forms each change junctions with the existing house — photographs of elevations and the garden accelerate address-specific triage.
Planning path and Building Regulations are separate tracks; conservation streets may constrain materials and massing. Attach any prior applications or refusals you hold.
Party-wall questions are recorded when shared walls or near-boundary excavations are likely; formal awards remain with appointed surveyors, not with this page alone.
For house extension on Victorian and Edwardian terraces and detached houses in Hampstead (NW3), we read the brief against local-authority constraints and the specific property type before recommending survey, design input or a build price basis. If the property is near Hampstead Heath, mention that with the access notes for Hampstead. Hampstead Heath's 790 acres border the area to the east, with Flask Walk and Well Walk forming the historic core around the original spa.
Survey, programme and compliance for house extension in Hampstead
House Extension on Victorian and Edwardian terraces and detached houses in Hampstead (NW3) needs a measured view of fabric, services and neighbour interfaces before strip-out is planned. Consent and Building Control routes are checked separately for the exact address. Context often referenced in Hampstead (Hampstead Heath, Conservation area) helps when describing elevations and access.
Survey or design input is separated from build where that protects the programme. Quotes for Hampstead work should state allowances for first-fix discoveries on period stock and how variations are agreed.
Does every house extension job in Hampstead need Building Control?
No. Notification, a competent-person route or neither depends on the accepted scope and the responsible route for the exact address. Include any existing notice or completion certificate so earlier work can be checked before new work starts.
What Hampstead housing stock means for house extension
Older buildings in Hampstead, including Victorian and Edwardian terraces and detached houses, may have altered services, solid walls and shared structures. For house extension, photographs of adjoining walls and existing fittings help us assess what may need investigation before quoting.
Camden is the local authority for Hampstead. Where the work requires permission, check the planning or Building Control requirements and any separate freeholder consent. For house extension in Hampstead, also describe the existing structure, weatherproofing, stairs or junctions, and consent path.
If your property lies within Camden's Hampstead Conservation Area, visible changes to elevations, roofs or frontages may require consent. Check the proposed details with the responsible authority or your appointed professional.
Rear additions, side access, level changes, neighbouring windows, trees and existing services create a different constraint set at every plot.
Local property decisions for house extension in Hampstead
Streets often named in Hampstead include Fitzjohns Avenue, Heath Street, Well Walk, Flask Walk. Include the building number, parking and the entry route for your own address.
Homeowner guide: House Extension around Hampstead
Planning house extension in Hampstead (NW3) starts with the property and the work you need. Use the notes below to prepare your enquiry.
On Victorian and Edwardian terraces and detached houses in Hampstead, period fabric, layered alterations and uneven floors often change method. Describe what you can see (and what you cannot) rather than relying on the NW3 label alone — neighbourhood character notes include: Victorian/Edwardian terraces, conservation area, Heath proximity. Large detached and semi-detached houses, many Grade II listed.
Local orientation for Hampstead: Hampstead Heath's 790 acres border the area to the east, with Flask Walk and Well Walk forming the historic core around the original spa. Treat that as context for access and fabric notes on your house extension brief — not as a diagnosis of your property.
Recommendations that consistently improve house extension triage in Hampstead: Service focus for this trade: joining the proposed rooms to structure, drainage, daylight, boundaries, party walls, planning and the existing house before cost planning. Record the full unit postcode inside NW3, not only the district. Photograph close-up detail and a wider context shot so triage can see routes, finishes and access. State whether the property is occupied, empty or part-occupied; that changes protection and programme for house extension in Hampstead.
After you request house extension in Hampstead, we review the job and confirm whether we can help. Any visit, price and start date are agreed with you before work is booked.
What to include in your house extension enquiry
Send your full postcode, contact details and a short description of the work in Hampstead. Add any relevant documents you already hold. Provide title plan, measured or estate-agent drawings, photographs, known drainage and tree information and the functional brief for the extension.
Evidence that speeds house extension triage in Hampstead
A strong house extension brief for Hampstead is visual. Phone photographs are enough when they show fabric, access and the full context of the problem on Victorian and Edwardian terraces and detached houses.
Priority house extension shots for Hampstead: If useful, note whether the property sits near Fitzjohns Avenue, Heath Street, Well Walk, Flask Walk for access description only — not as a fixed method. Wide shot of the room or elevation so we can see context on Victorian and Edwardian terraces and detached houses. Close-up of the defect, finish junction or appliance label if relevant. External access: frontage, side passage or garden route if works need outdoor plant or waste.
Property decision for house extension in Hampstead: Rear additions, side access, level changes, neighbouring windows, trees and existing services create a different constraint set at every plot.
Camden's Hampstead Conservation Area and house extension in Hampstead
Hampstead records Camden's Hampstead Conservation Area. That is a mapped designation, not a blanket NW3 rule — confirm the exact unit still sits inside the boundary.
For house extension, the designation can affect roof form, front elevations, lightwells and visible extensions. Formal consent stays with Camden, and only its officers can decide an application.
How extension site logistics work for Hampstead
Access for house extension in Hampstead: Plant, excavation, deliveries, skips, scaffold and occupied-house separation need a viable route and neighbour strategy.
Neighbour interfaces around Hampstead Heath, Conservation area, Victorian terraces can affect working hours for Hampstead.
Garden depth and side access photos accelerate triage for NW3.
Photographs for house extension triage in Hampstead
Photograph rear and side elevations, garden depth context and any existing extensions for Hampstead on victorian/edwardian terraces & detached.
Share drawings or prior applications/refusals held for the NW3 property.
State intended use of the new space (kitchen, living, multi-room) for Hampstead.
How house extension is programmed in Hampstead
Submit a private brief or call 020 7101 3168 with the full postcode for Hampstead. Submitting is not a booking.
Typical sequence: photos/survey → design/planning path assessment → written build package → structure and weatherproofing → fit-out → snagging.
Programme length depends on consents, ground and lead times — not a fixed week count.
A kitchen extension or a wider house extension in Hampstead?
A kitchen extension suits one new room opening onto the garden. A wider house extension takes in the side of the house or other rooms. Either way, the design question is how the new room meets the garden: the threshold, the glazing and the light into the house.
Both options depend on the structure and drainage already there. Note manhole covers, the levels between kitchen and lawn, and any wall that carries floors above. Building on the boundary, or digging below and near a neighbour’s foundations, can mean serving party wall notices. Site checks may change the design.
Consents for a Hampstead extension depend on the exact address, so settle them first. Permitted development for extensions excludes flats and maisonettes. In a conservation area, side extensions and rear extensions of more than one storey need planning permission. Building Regulations approval, needed for most extensions, is separate from planning.
Your house extension quote and appointment
The programme depends on the survey, any required approvals and material lead times. We confirm availability and written terms after reviewing your Hampstead enquiry, before an appointment is agreed.
What to send with your house extension enquiry
- The full Hampstead address and postcode
- Photographs of the back wall, side passage, garden levels and any existing extension
- Whether it is a house, maisonette or flat, and whether it is listed
- Existing drawings, planning history and any earlier building work
- How you want the new room, kitchen or otherwise, to meet the garden
- Boundaries shared with neighbours and any manhole covers in the garden
Postcode
NW3
Local authority
Camden
Property stock
Victorian/Edwardian terraces & detached
Official planning & building references for Hampstead
Confirm the responsible authority for the exact address. These links are national or council guidance only — they are not a grant of permission, Building Control approval or a party-wall award.
- Camden planning applications ↗
Official Camden planning route for addresses where Camden is the responsible authority. Confirm for the exact Hampstead postcode.
- Planning permission guidance (GOV.UK) ↗
National guidance only. Formal decisions remain with the responsible planning authority.
- Building Regulations approval (GOV.UK) ↗
Building Regulations are separate from planning permission. Choose the approval route that applies to the work.
Streets often referenced in Hampstead
Local street names help context — access and parking still vary by address. Include the exact location in your brief.
Fitzjohns Avenue · Heath Street · Well Walk · Flask Walk · Church Row · Downshire Hill · Keats Grove · South End Road
Local planning context
Hampstead includes conservation-area streets; the designation and responsible local authority are confirmed against the exact property before works are agreed.
2 published house extension case studies in Hampstead. Read each one for the work completed.
Scope and pricing
A submitted request is not an accepted booking. Where we can quote, the written document states the included work, assumptions, exclusions, programme and price basis before planned work starts.
What house extension work costs
These guides explain what drives the cost. Your written quote — if issued — is the price that applies to your property and accepted scope.
Read the pricing and payment policy →House extension questions in Hampstead
How much does a house extension cost in Hampstead?
Cost depends on footprint, glazing, structural complexity, ground conditions, specification and whether a full kitchen fit-out is included on Victorian and Edwardian terraces and detached houses. Pricing follows the accepted written scope, not a NW3 package rate.
How is payment handled for house extension in Hampstead?
Smaller jobs are paid by bank transfer after completion. Larger works use a deposit by bank transfer after you accept the written quote, followed by a final transfer under the agreed terms. Your quote sets out the payment stages before work starts.
Who delivers house extension in Hampstead — is this a marketplace?
No. Accepted house extension in Hampstead is delivered in-house through Hampstead Renovations after fit and capacity checks.
Can you build a side-return or wraparound extension in Hampstead?
Yes, where the host house, garden and neighbours allow on Victorian and Edwardian terraces and detached houses. Side-return and wraparound forms need careful structure, drainage and light assessment. Photographs of the rear and side elevations help us triage the brief before design decisions are fixed.
Do I need planning permission for a house extension in Hampstead?
It depends on design, previous alterations, designation and current local and national rules — including whether permitted development still applies. We confirm the assessment path for the specific property; formal decisions remain with the local planning authority.
What property details help you quote for house extension in Hampstead?
Send photographs of the rear, the side passage and the garden, with any drawings and planning history. Tell us if it is a flat or maisonette, and how you want the kitchen to meet the garden. Note any walls or boundaries you share with neighbours.
House Extension rules and regulations
7 questions on what the law requires of house extension work in England — notification, competence and certification — each answered with a link to the legislation or official guidance it comes from. These rules are national, so they apply in Hampstead exactly as they do anywhere else.
Read the house extension regulations Q&A →Related services in Hampstead
Work often briefed alongside house extension in Hampstead.
Related help
- House Extension hub → overview and all areas we cover
- Hampstead area guide → local stock and service routes
- FAQs → briefs, payments and service areas
- How it works → from brief to written next step
- Pricing policy → deposits, bank transfer, no rate-card fiction