House Extensions in Chiswick, W4
Rear, side-return, wraparound and double-storey extensions for houses in Chiswick, designed, approved and built by one team.
Covered under one contract
- Architectural and structural design
- Planning or lawful development certificate
- Foundations, walls, roof and steels
- Glazing, rooflights and doors
- Kitchen designed and fitted
- Building control and party wall handled
House Extensions in Chiswick.
An extension is the surest way to get the open-plan kitchen and dining room most families want, and the houses in Chiswick generally lend themselves to it: a side return to fill, a rear garden to build into, or on larger plots room for a full-width or double-storey addition.
We design the extension around how you will use it, not around the maximum footprint the rules allow. That means thinking about light, the level change to the garden, where the kitchen sits, how the old and new parts of the house meet and what happens to the rooms you already have. The structural engineering, party wall matters and building control inspections are all handled by us.
Approvals are checked on the first visit. Many single-storey rear extensions fall within permitted development, but the London Borough of Hounslow applies tighter rules in conservation areas and to flats and listed buildings, so we confirm the route before any drawings are produced and then manage the application if one is needed.
- Area
- Chiswick, W4
- Council
- London Borough of Hounslow
- Housing
- Victorian and Edwardian terraces and semis, Bedford Park Arts and Crafts houses, riverside cottages, 1930s houses in Grove Park
- Transport
- Turnham Green, Chiswick Park, Gunnersbury
- Rear or side return, on site
- 10 to 16 weeks
- Design and approvals
- 8 to 14 weeks before start
- Glazing lead time
- 6 to 10 weeks, ordered early
- Consent
- Permitted development or householder application
- Party wall
- Notices served by us
Chiswick: the houses and the planning rules.
Chiswick is Victorian and Edwardian west London at its most complete: the terraces of the Glebe Estate, Bedford Park, the first garden suburb, with its Norman Shaw houses, and the riverside at Strand-on-the-Green. Much of it is in conservation areas administered by Hounslow, with Bedford Park among the most closely protected.
Our Chiswick bathroom, with large-format porcelain, a wall-hung vanity and a walk-in shower, is typical of the work here: careful upgrades inside period houses that keep their character while bringing services up to date.
The Bedford Park, Strand-on-the-Green, Chiswick House and Old Chiswick conservation areas cover much of the district.
London Borough of Hounslow
Hounslow decides applications. Bedford Park and the other conservation areas carry Article 4 directions, so most external changes need a planning application.
Side returns
The Victorian terraces off Chiswick High Road are ideal for side-return extensions; outside conservation areas these often fall under permitted development.
Riverside
Properties near the Thames may need flood risk assessments for basements and ground-floor changes.
Approvals for house extensions in Chiswick.
Many single-storey rear extensions are permitted development within the 3 or 4 metre limits, or 6 and 8 metres under prior approval. Conservation areas, flats, listed buildings and larger schemes need a householder application, and every extension needs building regulations approval.
Hounslow decides applications. Bedford Park and the other conservation areas carry Article 4 directions, so most external changes need a planning application.
What house extensions in Chiswick includes.
- Architectural and structural design
- Planning or lawful development certificate
- Foundations, walls, roof and steels
- Glazing, rooflights and doors
- Kitchen designed and fitted
- Building control and party wall handled
From site visit to handover.
- 01
Site visit & consultation
We visit, listen and measure. Brief, budget and constraints understood before any advice is given.
- 02
Design & itemised quote
Our architects and engineers draw the scheme, and from that we provide a transparent, itemised quotation for your approval.
- 03
Planning & approvals
Planning applications, building control and party wall matters handled for you.
- 04
Build, managed weekly
Our own trades, sequenced by a site manager. Progress reported every week.
- 05
Handover & aftercare
Joint snagging walk-through, documentation, and a guarantee on our workmanship.
House Extensions in Chiswick: your questions.
Do I need planning permission for an extension in Chiswick?
Not always. Permitted development covers many single-storey rear extensions on houses, but the London Borough of Hounslow removes those rights in some conservation areas, and flats and listed buildings always need an application. We confirm the route at the site visit.
How long does an extension take to build?
Ten to sixteen weeks on site for a single-storey extension once approvals are in place, plus the design and approval period beforehand. Glazing has the longest lead time, so we order it early.
Which parts of Chiswick do you cover?
All of Chiswick and W4, including Chiswick High Road, Bedford Park, Strand-on-the-Green, Grove Park, Devonshire Road, Sutton Court Road, and the neighbouring districts. We are based in London and our teams work across central, north, north-west, west and south-west London.
Our work near Chiswick.
Other services in Chiswick.
House Refurbishment in Chiswick
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Flat Refurbishment in Chiswick
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Structural Alterations in Chiswick
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Loft Conversions in Chiswick
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Basement Conversions in Chiswick
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Kitchen Renovation in Chiswick
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Bathroom Renovation in Chiswick
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Bespoke Joinery & Fitted Furniture in Chiswick
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Architectural & Interior Design in Chiswick
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Planning Permission & Building Regulations in Chiswick
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We will visit, listen and explain what is possible for your property and how it would be approved. No pressure, no sales pitch.