House Extensions in Stanmore, HA7
Rear, side-return, wraparound and double-storey extensions for houses in Stanmore, 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 Stanmore.
An extension is the surest way to get the open-plan kitchen and dining room most families want, and the houses in Stanmore 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 Harrow 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
- Stanmore, HA7
- Council
- London Borough of Harrow
- Housing
- 1930s detached and semi-detached houses, larger inter-war and post-war detached houses on the hill, some Georgian and Victorian houses in the old village
- Transport
- Stanmore (Jubilee)
- 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
Stanmore: the houses and the planning rules.
Stanmore sits at the end of the Jubilee line, with larger houses and larger plots than most of north-west London: substantial 1930s semis and detached houses on tree-lined roads, and bigger detached houses on the slopes towards Stanmore Common. The old village around Stanmore Hill and the churches is a conservation area.
Our Stanmore loft conversion turned unused roof space into a master bedroom with roof windows on both pitches and an en-suite, with the rest of the house refurbished to match. The detached and semi-detached stock here suits hip-to-gable lofts and double-storey rear extensions particularly well.
The Stanmore Hill and Old Church Lane conservation areas cover the old village; most other streets are unrestricted.
London Borough of Harrow
Harrow is the planning authority. Most Stanmore houses are outside conservation areas, so permitted development covers many extensions and lofts.
Hip-to-gable lofts
Common on Stanmore's hipped-roof semis; usually permitted development within the 50 cubic metre allowance, with materials matching the existing roof.
Larger schemes
Two-storey extensions, wraparounds and anything in the Stanmore Hill conservation area need a planning application.
Approvals for house extensions in Stanmore.
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.
Harrow is the planning authority. Most Stanmore houses are outside conservation areas, so permitted development covers many extensions and lofts.
What house extensions in Stanmore 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 Stanmore: your questions.
Do I need planning permission for an extension in Stanmore?
Not always. Permitted development covers many single-storey rear extensions on houses, but the London Borough of Harrow 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 Stanmore do you cover?
All of Stanmore and HA7, including Stanmore Hill, The Broadway, Old Church Lane, Marsh Lane, Uxbridge Road, Green Lane, 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 Stanmore.
Other services in Stanmore.
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Flat Refurbishment in Stanmore
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Structural Alterations in Stanmore
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Loft Conversions in Stanmore
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Basement Conversions in Stanmore
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Kitchen Renovation in Stanmore
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Bathroom Renovation in Stanmore
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Bespoke Joinery & Fitted Furniture in Stanmore
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Architectural & Interior Design in Stanmore
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Planning Permission & Building Regulations in Stanmore
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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.