House Extensions in Hammersmith, W6
Rear, side-return, wraparound and double-storey extensions for houses in Hammersmith, 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 Hammersmith.
An extension is the surest way to get the open-plan kitchen and dining room most families want, and the houses in Hammersmith 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 Hammersmith and Fulham 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
- Hammersmith, W6
- Council
- London Borough of Hammersmith and Fulham
- Housing
- Victorian terraces in Brackenbury Village and around Ravenscourt Park, riverside houses along the Mall, mansion flats and new apartments
- Transport
- Hammersmith, Ravenscourt Park, Goldhawk Road
- 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
Hammersmith: the houses and the planning rules.
Away from the Broadway, Hammersmith is a district of tight Victorian terraces: Brackenbury Village's two-storey cottages, the larger houses around Ravenscourt Park, and the Georgian and Victorian houses along the river at the Mall. The terraces are narrow, the gardens are short and the demand for space is constant.
Side-return extensions are the signature project here, opening the ground floor into one kitchen and living space, often with a loft conversion in the same programme. The conservation areas ask for extensions that sit below the neighbours' sightlines and use matching brick.
The Brackenbury Village, Ravenscourt and Starch Green, and Hammersmith Mall conservation areas cover much of the residential district.
London Borough of Hammersmith and Fulham
The borough decides applications and applies Article 4 directions in Brackenbury Village and other conservation areas, removing permitted development for rear and roof extensions.
Side returns
The council's guidance favours side-return extensions kept low with rooflights; full-width rear extensions are assessed against neighbours' amenity.
Basements
The borough's basement policy applies, with a construction method statement and limits on depth and garden coverage.
Approvals for house extensions in Hammersmith.
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.
The borough decides applications and applies Article 4 directions in Brackenbury Village and other conservation areas, removing permitted development for rear and roof extensions.
What house extensions in Hammersmith 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 Hammersmith: your questions.
Do I need planning permission for an extension in Hammersmith?
Not always. Permitted development covers many single-storey rear extensions on houses, but the London Borough of Hammersmith and Fulham 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 Hammersmith do you cover?
All of Hammersmith and W6, including Brackenbury Road, Ravenscourt Road, Upper Mall, Hammersmith Grove, Dalling Road, Rylett 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 Hammersmith.
Other services in Hammersmith.

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Architectural & Interior Design in Hammersmith
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Planning Permission & Building Regulations in Hammersmith
Read moreHouse Extensions across London.
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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.

