Premium Builders in Chiswick
Bespoke extensions, luxury renovations, and premium loft conversions for discerning homeowners in Chiswick, W4.
Luxury Construction Services in Chiswick, W4
Chiswick is one of West London's most attractive and sought-after neighbourhoods, celebrated for its handsome Edwardian houses, picturesque riverside setting, and the historic charm of Bedford Park — widely regarded as the world's first garden suburb. For discerning homeowners in W4, Alstruct Ltd provides bespoke construction services meticulously crafted to enhance these distinguished properties while respecting their architectural heritage.
The residential streets of Chiswick offer an exceptional variety of period properties, from the grand Edwardian family houses along Devonshire Road to the charming riverside cottages of Strand-on-the-Green. These homes present remarkable opportunities for luxury rear extensions, premium loft conversions, and comprehensive renovations that blend period elegance with contemporary sophistication. Served by Chiswick Park station on the District line, the area attracts families and professionals who appreciate premium craftsmanship and refined living.
Alstruct brings specialist knowledge of the London Borough of Hounslow's planning policies, including the strict requirements of the Strand-on-the-Green, Chiswick House, and Bedford Park conservation areas. Our team navigates these complexities with confidence, ensuring your project achieves planning approval while delivering the luxury finish that Chiswick homeowners expect.
Why Choose Alstruct in Chiswick?
- Specialists in enhancing Chiswick's Edwardian houses and period properties
- Expert knowledge of Hounslow planning policies and Chiswick conservation areas
- CHAS Elite, Constructionline Gold & FMB certified backed by third-party audits
- Bespoke architectural design that respects period character
- Premium materials and exquisite craftsmanship on every project
- Detailed, transparent quotations — no hidden costs or surprises
- Dedicated project manager overseeing every phase of your build
- Strong track record of luxury projects across Chiswick and West London
Frequently Asked Questions — Chiswick
How much does a premium extension cost in Chiswick W4?
Premium extensions in Chiswick typically cost £2,500-£3,200 per square metre at mid-range specification and £3,200-£4,500 at high specification. A bespoke single-storey rear extension typically costs £80,000-£160,000, while luxury loft conversions range from £55,000-£95,000. Contact Alstruct for a detailed, fixed-price quote for your Chiswick project.
Are there conservation area restrictions in Chiswick?
Yes, Chiswick has several conservation areas including the Strand-on-the-Green, Chiswick House, and Bedford Park conservation areas managed by the London Borough of Hounslow. Properties within these areas have stricter planning requirements. Alstruct has extensive experience navigating Hounslow's conservation area policies to achieve approval for premium building projects.
What makes Chiswick properties ideal for extensions?
Chiswick's attractive Edwardian houses and Victorian terraces typically feature generous garden plots ideal for rear and side extensions. The area's wide, tree-lined streets and proximity to the Thames make these properties perfect candidates for luxury open-plan kitchen extensions, premium loft conversions, and bespoke basement conversions that significantly enhance both living space and property value.
How long does a luxury loft conversion take in Chiswick?
A premium loft conversion in Chiswick typically takes 10-14 weeks from start to completion. Dormer conversions typically take 10-14 weeks on site, a hip-to-gable 10-16 weeks and a mansard 14-20 weeks. Alstruct provides a detailed programme of works with clear milestones before commencing your Chiswick project.
Premium Construction Services in Chiswick
Luxury House Extensions Chiswick
Bespoke rear, side and wraparound extensions that complement Chiswick's Edwardian architecture with premium contemporary design.
Learn more →Premium Loft Conversions Chiswick
Exquisite dormer, hip-to-gable and mansard loft conversions maximising space in Chiswick's characterful period homes.
Learn more →Bespoke Home Renovations Chiswick
Complete whole-house renovations that transform Chiswick properties into meticulously crafted modern family homes.
Learn more →Basement Conversions Chiswick
Expert basement excavation and luxury conversion creating premium living space beneath your Chiswick property.
Learn more →Groundworks Chiswick
Professional foundations, drainage and site preparation for premium construction projects across Chiswick W4.
Learn more →Hard Landscaping Chiswick
Elegant garden designs, premium patios and bespoke outdoor spaces befitting Chiswick's prestigious setting.
Learn more →House and kitchen extensions in Chiswick
Chiswick ranges from the Arts and Crafts houses of Bedford Park and the Victorian terraces of the Glebe Estate to Edwardian houses around Turnham Green and the large villas of Grove Park and Strand-on-the-Green. Kitchen extensions are the most requested Chiswick project: side-return infills on the terraces, wraparounds on the wider Edwardian houses, and basements under the Grove Park villas where gardens are small.
Bedford Park, Strand-on-the-Green, Turnham Green and Grove Park are conservation areas, and Hounslow Council applies Article 4 restrictions on several streets. Most Chiswick extensions we price fall between £2,500 and £4,000 per m², so a 25–30 m² kitchen extension is roughly £75,000–£120,000 fitted out; our house extension cost guide breaks the numbers down. We check permitted development rights at the first visit and deal with Hounslow Council (Bedford Park streets fall under Ealing Council) in-house.
Planning a kitchen extension? See our kitchen extensions page for layouts, glazing and costs.
Loft conversions in Chiswick
Chiswick's Victorian and Edwardian roofs take rear dormers and L-shaped dormers well; in Bedford Park and Strand-on-the-Green the design must respect the original roofscape.
Expect £45,000–£75,000 for a dormer loft with a bedroom and en-suite, £60,000–£100,000+ for a mansard and from £25,000 for a Velux conversion; the loft conversion cost guide has the breakdown. For a Chiswick loft we measure head height, roof structure and the stair landing first, and the quote includes structural calculations and Building Regulations approval.
Renovations and refurbishment in Chiswick
Chiswick refurbishments are usually full house renovations of Edwardian and Victorian homes, combining new kitchens and bathrooms with period repair. Typical Chiswick refurbishments include structural openings with steel beams, new kitchens and bathrooms, rewiring, heating and period repairs such as sash windows, cornices and floors. See our renovation cost guide for realistic budgets. Chiswick projects are run by a single project manager under a JCT contract, with a written specification and a 10-year workmanship warranty.
Planning approvals in Chiswick
Hounslow Council approved 78.5% of householder planning applications decided between September 2025 and August 2026, against a London average of 85.8%; a typical decision took about 8.0 weeks from validation. Loft conversions that needed planning permission were approved 76.4% of the time and extensions 83.5%.
Some Chiswick streets fall under Ealing Council instead, where the approval rate was 86.4%.
See how every London borough compares, including loft and extension approval rates, in our 2026 London planning approvals study.
Recent Alstruct projects across London
Dunstan Road, Golders Green NW11
Rear extension, two-storey side extension and full renovation of a 1930s semi-detached house.
View project →Whitehall Park, Archway N19
Full Victorian terrace renovation and rear extension with triple glazing and aluminium sliding doors.
View project →Limehouse Cottage, E14
Underpinning, ground and first-floor extensions and a full renovation with bespoke joinery.
View project →Beyond the projects above, we have recent and current sites in W4, W14, W6, NW8, W11, W12 and SW6 within about five miles of Chiswick, and we work across every London borough from our office in South Woodford, E18. See all completed projects →
Common questions about building in Chiswick
Do Alstruct cover Chiswick?
Yes. Alstruct takes on extensions, renovations and loft conversions in Chiswick and the surrounding neighbourhoods, working across every London borough from our office in South Woodford, E18. We visit, measure and provide a written, fixed-price quote.
How much does a house extension cost in Chiswick?
As a guide, our published London figures at mid to high specification are £80,000–£160,000 for a single-storey rear extension, £65,000–£130,000 for a side return, £170,000–£320,000 for a double-storey and £190,000–£380,000 for a wrap-around. Edwardian and victorian houses are the most common build type in the area, and our quote will reflect the specific condition and layout of the property. Our house extension cost guide sets out what those figures include.
Do I need planning permission for an extension in Chiswick?
Chiswick sits in Chiswick Conservation Areas, which means Permitted Development rights are restricted and most extensions require full planning permission from Hounslow Council. We handle the planning application, design drawings and party wall notices on your behalf.
What types of property do you work on in Chiswick?
Edwardian and Victorian houses are the most common homes in Chiswick. We survey the structure, check the planning and building regulations position and price from what we find, so the quote reflects your property rather than an assumption. Our completed projects show the Victorian and 1930s houses we have extended and refurbished across London.
How quickly can Alstruct start a project in Chiswick?
Once design and approvals are signed off, we typically start on site in Chiswick within 6–12 weeks depending on programme availability. Design, planning and building regulations typically take 3–6 months before that. For urgent projects, get in touch on 020 8080 8240 to discuss timing.
Are you accredited to work in Chiswick?
Yes. Alstruct holds CHAS Elite, Constructionline Gold and Federation of Master Builders (FMB) accreditation, with £10M public liability insurance, JCT contracts as standard, and a 10-year workmanship warranty on every project — including all work in Chiswick.
Nearby areas we cover
Alstruct works across every London borough. Here are areas close to Chiswick with dedicated local pages: