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Builders in Twickenham: Loft Conversions, Extensions & Renovations
Looking for a builder in Twickenham? Crest Projects designs and builds loft conversions, house extensions and renovations for St Margarets, Strawberry Hill, Whitton and the streets around Twickenham Green, with over 20 years of experience.
- Over 20 years of experience
- Design, approvals and build under one team
- Written, itemised estimates
Who are the best builders in Twickenham for loft conversions and extensions?
Crest Projects is a West London building company that carries out loft conversions, house extensions and full renovations for homeowners in Twickenham TW1 and TW2. We manage design, Richmond Council approvals, Party Wall notices and the build under one team, with over 20 years of experience. Call 020 8088 8281 to arrange a site visit and written estimate.
Updated October 2026
Our builder services in Twickenham
From the late Victorian villas of Strawberry Hill to the interwar semis of Whitton, Twickenham's homes suit a wide range of building work. Choose the service closest to your project.
Loft conversions in Twickenham
Dormer, hip-to-gable, mansard and rooflight loft conversions. Ideal for Twickenham's Edwardian and interwar houses.
House extensions in Twickenham
Rear, side-return and wraparound extensions. Rear and side extensions on Strawberry Hill plots and Whitton semis.
Full house renovations in Twickenham
Whole-house refurbishment managed by one team. Full refurbishment of Victorian and 1930s family homes.
Kitchen renovations in Twickenham
Complete kitchen refits from structural opening-up to final fitting. Larger kitchens for busy family houses.
Bathroom renovations in Twickenham
Bathroom, en-suite and wet-room refurbishment done properly. Family bathrooms and en-suites done properly.
Loft conversion builders in Twickenham
Twickenham is a family area where homes tend to be kept and extended rather than swapped. Adding a loft conversion gives an extra bedroom or home office without losing garden space. Our loft conversion builders in Twickenham design the layout, handle the structural calculations and approvals, and build to Building Regulations for stairs, fire safety and insulation. Because Twickenham has many conservation areas, we check the planning position for your street at the start.
Types of loft conversion in Twickenham
In Twickenham, rear dormers suit the Victorian and Edwardian terraces, and hip-to-gable schemes work well on the many interwar semis. On Strawberry Hill's larger villas, bigger dormers are possible, but conservation area rules mean the design must respect the street.
Rooflight (Velux) conversions
Roof windows added without changing the roof shape.
Rear dormer loft conversions
Full-height space at the back of the roof.
Hip-to-gable loft conversions
Straightens a sloping side roof for a larger room.
Mansard loft conversions
Steep-sided, flat-roofed. Needs planning permission.
Loft conversions by property type
Terraced houses
Victorian and Edwardian terraces around Twickenham Green and St Margarets suit rear dormers. A Party Wall notice is normally needed, and visible roof changes need care in conservation areas.
Semi-detached houses
Interwar and Edwardian semis in Whitton, Fulwell and Strawberry Hill often take a hip-to-gable and rear dormer combination, adding a full extra floor.
Detached houses
Large late Victorian detached houses on Strawberry Hill's generous plots have scope for substantial dormers, subject to conservation area rules.
Is your Twickenham loft suitable for conversion?
- Roof structure: traditional cut roofs are easier to convert than modern trussed roofs.
- Head height: around 2.2 metres from floor to ridge is the usual starting point.
- Conservation area: much of St Margarets, Strawberry Hill and Twickenham Green is covered, so check before drawing.
- Previous work: earlier dormers or extensions may already use some of your permitted development allowance.
House extension builders in Twickenham
Twickenham plots are often generous, particularly in Strawberry Hill and Whitton, so rear and wraparound extensions are popular. Our house extension builders in Twickenham build single-storey rear, side-return and wraparound extensions, and double-storey additions where planning allows, taking care of foundations, steelwork, roofing and glazing.
Twickenham has a few practical quirks. Rugby match days at the stadium bring traffic and parking restrictions, and parts of the riverside sit in flood zones. We plan deliveries and site access around both so your programme stays realistic.
Home renovation and refurbishment in Twickenham
Many Twickenham homes have been in the same family for decades and are ready for rewiring, replumbing and a new layout. We carry out whole-house renovations and individual kitchens and bathrooms, coordinating all trades under one team.
- Full house renovation: strip-out, structural changes, services and finishes managed as one project. House renovation
- Kitchen renovation: layout changes, new services, fitting and finishing. Kitchen renovation
- Bathroom renovation: waterproofing, tiling, plumbing and fitting. Bathroom renovation
Why Twickenham homes need an experienced local builder
Twickenham's housing is varied. Strawberry Hill Road and Waldegrave Gardens were developed from the 1880s after Strawberry Hill station opened, and Richmond Council's appraisal describes substantial two-and-a-half-storey late Victorian houses on generous plots, with smaller homes on Waldegrave Gardens. Pope's Avenue has earlier villas, and Twickenham Green has cottages and larger red-brick houses.
The borough has designated a long list of conservation areas around Twickenham, including Strawberry Hill Road, Waldegrave Park, Pope's Avenue, Twickenham Green, St Margarets Estate, Fieldend, Belmont Road and Trafalgar Road. Planning applications in these areas get closer scrutiny, particularly for roofs and street frontages.
Knowing how Richmond Council assesses applications in these areas, and how to build around match days and narrow streets, saves time and avoids redesigns.
Strawberry Hill and St Margarets have a distinctive Victorian and Edwardian character, while Whitton and Fulwell are dominated by interwar semis. A scheme that works in one can be wrong in the other, so we shape each project around the house, the plot and the planning position rather than copying a design from the next street.
Do you need planning permission to build in Twickenham?
Many loft conversions and single-storey rear extensions in Twickenham can go ahead under permitted development, but its many conservation areas restrict those rights. Use the table as a guide and confirm your address with Richmond Council.
| Project | Permitted development | Planning permission needed |
|---|---|---|
| Loft conversion (rear dormer) | Often yes, within volume limits (40 m³ terraced, 50 m³ semi-detached or detached) | Yes, in conservation areas such as Strawberry Hill Road or St Margarets, or if limits are exceeded |
| Single-storey rear extension | Often yes, up to 3 m (terraced or semi) or 4 m (detached), or 6 m / 8 m through prior approval | Yes, if larger, in a conservation area, or if height and materials rules are exceeded |
| Wraparound extension | Rarely, usually needs planning because of its combined size and width | Usually yes, especially in conservation areas |
| Kitchen or bathroom renovation | Yes, internal work does not need planning | No, though Building Regulations apply and a listed-building check may be needed |
General guidance only. Rules depend on your property, location and any Article 4 direction. We check this for you before design starts.
Which project suits your Twickenham home?
Twickenham's mix of Victorian villas, Edwardian terraces and interwar semis shapes which projects work best. Use this as a starting point, and we will confirm after a site visit.
| Property type | Where you find it | Popular projects |
|---|---|---|
| Late Victorian villa | Strawberry Hill Road, Waldegrave Park | Large rear extension, loft conversion, whole-house renovation |
| Victorian and Edwardian terrace | Twickenham Green, St Margarets | Rear dormer loft, side-return extension, kitchen refit |
| Interwar semi-detached house | Whitton, Fulwell, Heath Road | Hip-to-gable loft, wraparound extension, bathroom refits |
| Riverside and period cottage | Twickenham Riverside, Cross Deep | Flood-aware renovation, sensitive extension |
Building in a Twickenham conservation area
Twickenham has a large number of conservation areas, so many projects fall inside one. Always check your address before ordering drawings.
- Strawberry Hill Road, Waldegrave Park and Pope's Avenue are among the Strawberry Hill conservation areas.
- St Margarets Estate, Fieldend, Belmont Road, Trafalgar Road and Twickenham Green are also designated.
- Roof alterations, front dormers, replacement windows and front boundary changes normally need planning permission.
- Trees in conservation areas are protected, and you must notify the council before cutting or pruning most of them.
We review your address against Richmond Council's conservation area maps before design starts, so you know early what is realistic.
What affects the cost of building work in Twickenham?
No two Twickenham projects cost the same. The main factors are:
- Project type: a rear dormer, a wraparound extension and a whole-house renovation have very different scopes.
- Size of the plot and house: larger Strawberry Hill villas allow bigger projects but need more structure.
- Approvals: planning, structural engineering, Party Wall surveyors and Building Control.
- Site logistics: match-day restrictions and narrow streets affect deliveries, scaffolding and skips.
- Flood and ground conditions: riverside streets can need extra groundwork and flood-resilient design.
Try our online cost calculator for a starting figure, or ask us for a written estimate.
How to choose a builder in Twickenham
Searching for a builder in Twickenham brings up directories, aggregators and many firms. Whoever you choose, check these points first:
- Local logistics: ask how they plan deliveries and access around Twickenham's match-day restrictions.
- Ask about match-day planning: deliveries and scaffolding near the stadium need scheduling around the fixture list.
- Check Strawberry Hill knowledge: a builder should understand the area's conservation rules and typical plots.
- Ask about river and flood risk: riverside streets may need flood-resilient design.
- See finished work on semis: interwar semis are common, so ask for recent loft and extension examples.
- Insurance: ask to see public liability cover.
- Written estimate: an itemised scope, not a lump sum.
How a Twickenham building project works with Crest Projects
Site visit and brief
We visit your Twickenham home, listen to what you want, check access and parking around St Margarets or Strawberry Hill, and survey the existing structure.
Design and approvals
Drawings, structural calculations, a check against London Borough of Richmond upon Thames planning rules and conservation areas, Party Wall notices and Building Regulations.
Written estimate
An itemised estimate with scope, programme and payment stages.
Build
A dedicated team manages the works, keeps you updated and keeps neighbours in Whitton informed.
Handover
Final inspection, snagging, certificates and Building Control sign-off.
Local builders across Twickenham TW1 and nearby
We work throughout Twickenham TW1 and TW2, including:
- St Margarets
- Strawberry Hill
- Whitton
- Twickenham Green
- Twickenham Riverside
- Fulwell
- Cross Deep
- Heath Road
Also building nearby
- Builders in Teddington
- Builders in Richmond
- Builders in Hampton
- Builders in Kingston
- Builders in Chiswick
- Builders in Ealing
See our work on the projects page, read about Crest Projects, explore our property investment service or get a starting figure from the cost calculator.
Find Crest Projects near Twickenham
Crest Projects Ltd128a Boston Rd, London W7 2HJ
020 8088 8281
info@crestprojects.co.uk
Our office is on Boston Road in Hanwell, West London, a straightforward drive from Twickenham. View our Google Business Profile to see our location, photos and reviews.
Builders in Twickenham: frequently asked questions
How much does a builder in Twickenham cost?
In Twickenham the price of a loft conversion, a wraparound extension or a full renovation varies with the house, the plot and any conservation area requirements. A late Victorian villa on Strawberry Hill is priced differently from a Whitton semi. We give a written, itemised estimate after a site visit.
Which parts of Twickenham are in conservation areas?
Richmond Council has designated many, including Strawberry Hill Road, Waldegrave Park, Pope's Avenue, Twickenham Green, St Margarets Estate, Fieldend, Belmont Road and Trafalgar Road. Check the council's maps for your exact address. We do this before design starts.
Do I need planning permission for a loft conversion in Twickenham?
Many Twickenham loft conversions fall under permitted development, within volume limits, but not in conservation areas or where limits are exceeded. Roof extensions on the front slope need planning permission. A lawful development certificate from Richmond Council confirms your position.
Can I build a large extension on a Strawberry Hill house?
Often, yes. The late Victorian houses on Strawberry Hill Road sit on generous plots, so rear and wraparound extensions are possible. But the area is a conservation area, so design and materials need to respect the street. We prepare drawings and applications to suit the council's expectations.
Do rugby match days affect building work in Twickenham?
They can. Match days at Twickenham Stadium bring road closures, parking restrictions and heavy traffic to surrounding streets. We plan deliveries, skip collections and scaffolding around the fixture list so site work is not disrupted and neighbours are not inconvenienced.
Is flood risk a concern for building work in Twickenham?
Parts of Twickenham near the Thames, including some riverside streets, sit in Environment Agency flood zones, which can affect extension levels and basements. Check the Environment Agency flood map for your address. Where it applies, we design with flood resilience in mind.
Do you handle party wall agreements in Twickenham?
Yes. Terraces around Twickenham Green and St Margarets share walls, and the semis in Whitton share a party wall that runs through the loft. Work on or near that wall usually needs a Party Wall Act 1996 notice. We handle the paperwork and the schedule of condition.
Which Twickenham areas do you cover?
We cover St Margarets, Strawberry Hill, Whitton, Twickenham Green, Twickenham Riverside, Fulwell and Cross Deep, plus neighbouring areas such as Teddington, Richmond and Hampton.
Can I extend a house near Twickenham Stadium?
Yes. Building work is not restricted by the stadium, but match days bring traffic and parking restrictions. We schedule deliveries, skip changes and scaffolding around the fixture list so site work flows and neighbours are not disrupted.
What loft conversion suits an interwar semi in Whitton?
Most Whitton semis have hipped roofs, so a hip-to-gable conversion combined with a rear dormer usually creates the most space. It turns the hipped side into a gable and adds a full extra room. We check structure, head height and planning before recommending it.
How do I get a quote from Crest Projects?
Call 020 8088 8281, email info@crestprojects.co.uk or use the enquiry form on our contact page. Tell us your Twickenham address, the work you have in mind and your budget range. We then arrange a site visit, discuss options and send a written estimate.
Planning building work in Twickenham?
Speak to a builder with over 20 years of experience. Tell us about your Twickenham project and we will arrange a site visit and written estimate.
Crest Projects Ltd, 128a Boston Rd, London W7 2HJ