New build builders London projects done properly. Since 2010 we've built 150+ custom homes across West London for homeowners with their own plot. Teardown rebuilds, self-build commissions, plot-and-build packages. Every project starts with a free feasibility visit and a fixed-price design-and-build contract. One company from planning to keys, NHBC-warranted, fully insured.
Three reasons. First, the homeowner hires an architect, structural engineer and builder separately. Each blames the others when costs creep. Second, the contract is "cost plus" instead of fixed-price, so every variation becomes an extra. Third, planning conditions are missed during design, triggering expensive redesigns mid-build. We've stepped in to rescue dozens of part-built projects that went exactly this way.
At Signature Build Properties, we run new build builders London projects on a single design-and-build contract. Our in-house architect produces drawings, our structural engineer signs off, our project manager runs the build, and every cost is locked in writing before groundworks start. One contract, one price, one team accountable from the planning submission through to the day you collect the keys.
Based in Hayes, we build across the West London mix of Victorian teardown rebuilds, 1930s replacement dwellings, self-build commissions on inherited plots and luxury new-build family homes across Ealing, Richmond and the Surrey commuter belt. View recent new build projects.
We had architect's drawings already and got three builders to price the job. Two came back at "around £450k subject to variations." Signature came in at £518k fixed including the steels, the roof, the kitchen, everything. The cheaper quotes would have hit £600k by completion. We paid £518k. Final invoice matched the contract to the pound.
The four tiers below cover how most homeowners and developers engage us. From a turnkey design-and-build on your existing plot through to project management on architect-led schemes. Pick the level of involvement that matches your project. Need a rough cost first? Try our construction cost calculators.
Our most-booked tier. In-house architect, structural engineer and build team under one fixed-price contract. Best for clients with a plot who want a single contract through to handover. NHBC warranty, building control sign-off, all certs on completion.
Demolition of an existing dwelling plus full new build on the same footprint. Common in West London where 1950s bungalows or undersized terraces are replaced with larger contemporary family homes. We handle demolition consent, party wall, and the full rebuild on a single contract.
You've already engaged an architect or have planning permission in place. We step in as new build contractors London, manage all trades and the build programme. Fee-based or fixed-price contract for the construction works only. Common on inherited plot self-builds and architect-led schemes.
Top-of-market West London custom new build. Bespoke kitchens from Smallbone or Roundhouse, full smart-home integration, swimming pools or basements, landscaped grounds. Common in Richmond, Chiswick and the Surrey commuter belt. Project teams scaled for the spec level.
We work out of Hayes and build new homes across nine sub-regions. Each borough has its own planning rhythm and property mix. Knowing the local planning officers, surveyors and material suppliers makes a real difference to project timelines and cost.
Teardown rebuild heartland. Larger Victorian and Edwardian plots get replaced with contemporary family homes. Many in conservation area zones, so we handle planning carefully — usually 12 to 16 weeks for approval, then 12 to 18 months to build.
Premium budgets. Bespoke design-and-build commissions running £800k to £1.5m+ build cost. Strong demand for basement conversions plus new build above. Plot constraints often require party wall agreements on both sides.
Our home territory. Plot prices lower, build budgets more accessible. Common path: clients buy a small 1930s house, demolish and rebuild a 4-bed family home. Permitted development rules cover much of the work, which speeds things up significantly.
Mixed stock. We see a steady flow of inherited plots being self-built on. Hounslow council is reasonable on planning, decision times usually 10 to 12 weeks for householder applications. Family-scale new builds dominate here.
Conservation control is tight. Listed buildings common. Planning takes longer here, often 14 to 18 weeks plus pre-application advice essential. Premium spec dominates: bespoke kitchens, oak joinery, lime-friendly materials on period-area schemes.
Bigger Edwardian plots replaced with substantial contemporary homes. Multi-million-pound budgets common. Often combined with deep basements (cinema rooms, gym, pool). Building control rigorous, structural engineering complex.
Family suburban new build market. 1930s and 1950s semis frequently torn down and rebuilt as larger detached family homes. Kingston council is fast on planning, decision often inside 10 weeks. Mid-spec builds dominant.
Mixed inter-war stock. Many plots inherited within multi-generation Indian and Asian families and rebuilt as larger homes for extended family living. Specific design considerations around layout, separate entrances and prayer rooms.
Large detached homes on bigger plots. Some sit in green belt or near Thames floodplain, so planning constraints checked upfront. Luxury new build is the norm: 5-bed plus, double garages, gated entries, landscaped grounds.
National developers like Barratt, Taylor Wimpey and Bellway sell ready-built homes from their pattern books. They acquire land, build whatever maximises plot density, and sell at completion. You're a buyer in their process, with no input into design, materials or layout. Their warranties and after-sales service are well-regulated but their margins depend on volume not bespoke quality.
Hiring new build builders London on a custom commission flips the model. You own the plot. You commission the design. You choose every specification. We build it for you on a fixed-price contract. The result is a home tailored to your family, your land and your taste. The NHBC structural warranty is identical to what national developers provide, but the home reflects exactly what you wanted built, not a developer-led template.
The matrix below maps the most common West London new build scenarios to the right service tier and likely budget. Every project still needs a feasibility visit before the design phase starts.
| Your Situation | Best Service Tier | Typical Budget | Timeline |
|---|---|---|---|
| Inherited or purchased empty plot | Custom Design & Build | £380,000 – £600,000 | 12–18 months |
| 1930s bungalow or undersized house | Teardown & Rebuild | £450,000 – £750,000 | 14–20 months |
| Garden plot subdivision | Custom Design & Build (compact) | £280,000 – £450,000 | 10–14 months |
| Architect's drawings already done | Self-Build Project Management | Build cost + 10–15% | 10–14 months |
| Period plot, conservation area | Custom + planning specialist | £500,000 – £900,000 | 14–20 months |
| High-end West London / Surrey plot | Luxury New Build | £800,000 – £1,500,000+ | 16–24 months |
Every figure below is build cost only, excluding land. These come from new build builders London projects we've delivered across West London in the past 18 months. Every contract is fixed in writing before groundworks start.
Build cost runs £2,800 to £4,500 per square metre depending on spec. A 2-bed new build is £280,000 to £450,000 in build cost. A 3-bed custom home runs £380,000 to £620,000. A 4-bed luxury new build sits at £550,000 to £1,000,000+. Teardown costs add £25,000 to £80,000 depending on the existing structure. Planning and design fees run 8% to 12% of build cost. We fix every line in writing.
| Project Type | Build Cost (ex land) | Duration | Best For |
|---|---|---|---|
| Free Plot Feasibility Visit | Free | 1–2 hours | All new build enquiries |
| Compact 2-bed new build (≤100m²) | £280,000 – £450,000 | 10–14 months | Subdivided plot or garden build |
| Standard 3-bed family home (120–150m²) | £380,000 – £620,000 | 12–18 months | Custom Design & Build |
| 4-bed family home (150–220m²) | £480,000 – £820,000 | 14–20 months | Larger plots, growing families |
| Luxury 4-5 bed (220m²+, premium spec) | £800,000 – £1,500,000+ | 16–24 months | High-end West London / Surrey |
| Teardown of existing structure | +£25,000 – £80,000 | 3–6 weeks | Replacement dwelling |
| Design + Planning Package only | £18,000 – £45,000 | 3–6 months | Planning consent route |
| Project Management only | 10–15% of build cost | Full build duration | Architect already engaged |
All prices exclude land cost, VAT (where applicable on new build), and statutory fees. Indicative for London 2026. For independent guidance see the Self Build Portal.
Every new build builders London project we run follows the same six-step process. Free feasibility, planning, fixed-price contract, build, snagging, handover. One team accountable from start to finish.
Our project manager visits your plot, checks access, ground conditions, planning constraints, party wall implications and structural feasibility. You receive a written feasibility report the same week including rough build budget and likely planning route. No commitment.
Our in-house architect produces concept drawings to your brief. Once you sign off the design, we submit the planning application and manage the council process. Pre-application advice is used where conservation or listed status applies. Decision in 8 to 16 weeks.
Once planning is approved, structural drawings completed and spec finalised, you receive a fixed-price design-and-build contract covering every cost. Groundworks, structure, services, finishes, joinery, all certifications. No "labour and materials" pricing.
Site clearance, demolition if required, foundations, drainage, structural frame. Brickwork, blockwork, steelwork, roof structure. Weather-tight shell reached typically within 4 to 6 months on a standard 3-bed project. Building control inspector signs off each stage.
First fix electrics, plumbing, heating. Then plasterboard, dry lining, screed floors. Second fix follows: kitchens, bathrooms, sanitaryware, lighting, sockets, doors, joinery, tiling, decoration. All in-house trades sequenced by the project manager.
Snagging inspection room by room, with you present. All snags fixed inside 10 working days. Building control completion certificate issued. NHBC structural warranty, NICEIC electrical, Gas Safe, FENSA all handed over. Keys yours on completion date.
A custom new build typically delivers 15% to 30% more home for the same budget compared with buying a developer's pattern-book equivalent. For West London homeowners with a plot, building beats buying every time on value per square metre.
Ealing W5, Acton W3 and Chiswick W4 are West London's busiest teardown-and-rebuild market. Generous Victorian and Edwardian plots, strong family demand, and a steady flow of older properties being replaced with contemporary homes.
Ealing and Acton sit on a mix of Victorian terraces, Edwardian semis and 1930s detached homes. Many of the larger plots have undersized or dated dwellings on them, making teardown-and-rebuild commercially logical. The borough's planning team is reasonable on contemporary replacement designs provided the streetscape character is respected. Conservation area zones require sympathetic design and slower planning, typically 12 to 16 weeks.
Most jobs here are custom design-and-build packages running £450,000 to £750,000 in build cost. We handle planning, party wall agreements, demolition, structural design and the full build under one fixed contract. We've built across W3, W4, W5, W7 and W13 postcodes over the past 5 years, so the local planning officers know our work.
For a custom new build in Ealing W5, Acton W3, Chiswick W4 or Hanwell W7, call us on +44 7404 931629 for a free plot feasibility visit and detailed quote.
| Project Scope | Ealing/Acton 2026 Build Cost |
|---|---|
| Free plot feasibility | Free |
| Garden subdivision (compact 2-bed) | £320,000 – £480,000 |
| 3-bed contemporary new build | £420,000 – £640,000 |
| Teardown + 4-bed replacement | £550,000 – £820,000 |
| Conservation area period-style new build | £600,000 – £950,000 |
| Luxury 5-bed family home | £850,000 – £1,400,000+ |
| Basement excavation (added scope) | +£200,000 – £450,000 |
A new build is the biggest single contract most people ever sign. Watch for these six warning signs before committing. A serious new build contractor will pass all six without flinching.
Architect, structural engineer and builder on three separate contracts means three people pointing at each other when costs creep. Insist on a single design-and-build contract with one party accountable for the result. We do this on every project.
A new build quoted on labour rates plus materials grows by 20% to 40% over the project. Every variation is an extra invoice. A proper fixed-price contract caps your exposure. The only variations should be ones you actively choose mid-build.
Every new build needs a 10-year structural warranty for the home to be saleable, mortgageable and lawful. NHBC, Premier Guarantee or Buildmark are the recognised providers. If your builder can't enrol you for one, walk away. We enrol every project at planning stage.
Anything above 15 to 20% before groundworks start is a cash-flow problem on their end. Legitimate new build builders stage payments against milestones: foundations, weather-tight shell, first fix, second fix, completion. Each release is conditional on building control sign-off.
Public liability minimum £5m. Employer's liability £10m. Contractor's all risks insurance covering the build. Ask to see active certificates before signing. A builder who fumbles this question hasn't been doing it long enough or properly. Ours come standard.
A genuine West London new build contractor has multiple completed homes locally. Ask for three addresses you can drive past, plus two recent clients you can phone. If they dodge with "private client confidentiality" excuses, find out why before you commit any money.
The projects below cover an Ealing teardown rebuild, a Twickenham garden-plot self-build and a Hayes 1950s bungalow replacement. Each shows what a fixed-price custom new build looks like start to finish.
A tired 3-bed Victorian end-terrace on a generous Ealing W5 plot. Planning approved for full demolition and a contemporary 4-bed replacement with double-height entrance, open-plan kitchen-family room and master suite with dressing room. Air-source heat pump, MVHR ventilation, electric vehicle charger. Fixed-price contract signed at £518,000 build cost. Final invoice matched to the pound. Resale uplift estimated at £350,000+.
A client inherited a large rear garden plot from her parents' Twickenham property and obtained planning permission for a 3-bed family home. We took over from her architect, ran the full build on a fixed-price project management contract. Includes oak engineered flooring, bespoke kitchen, en suite master, low-energy spec throughout. NHBC 10-year warranty in place. She moved in 11 months after groundworks started.
A Hayes UB4 client purchased a 1950s bungalow specifically to demolish and replace. Permitted development covered the volume increase. We handled demolition, groundworks and built a 3-bed contemporary family home with open-plan ground floor, three bedrooms upstairs, modern finish throughout. £388,000 fixed cost. Project completed 10 months after demolition, family moved in on the contract date.
Our project manager visits your plot, runs a feasibility check, discusses your vision, then provides a written report and rough budget band the same week. No commitment, no pressure. Just the information you need to plan the next step.
Contact us today to discuss your project and receive a no-obligation quote.
