St John's Wood · NW8

House Extensions in St John's Wood, NW8

Rear, side-return, wraparound and double-storey extensions for houses in St John's Wood, 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
Call us on 07939 239238

House Extensions in St John's Wood.

An extension is the surest way to get the open-plan kitchen and dining room most families want, and the houses in St John's Wood 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 City of Westminster 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.

House Extensions across London

At a glance
Area
St John's Wood, NW8
Council
City of Westminster
Housing
Italianate stucco villas, Victorian semi-detached houses, red-brick mansion blocks and 1930s apartment buildings
Transport
St John's Wood (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
Central London

St John's Wood: the houses and the planning rules.

St John's Wood was London's first garden suburb of villas, laid out from the 1820s, and much of that character survives: paired stucco villas set back behind front gardens, later Victorian houses on the roads towards Maida Vale, and the mansion blocks and 1930s apartment buildings along Wellington Road and St John's Wood Road. Abbey Road and Lord's sit at its edges, Regent's Park to the south.

For owners that means large, well-proportioned rooms, deep plots that suit rear extensions and basements, and a planning authority, Westminster, that expects any change to respect the villa character. We have fitted kitchens on Abbey Road and in the roads off the High Street, and we know which streets carry the tighter controls.

The St John's Wood Conservation Area covers most of the district.

Westminster City Council

Westminster decides planning and listed building applications. The St John's Wood Conservation Area removes some permitted development rights, so many rear extensions and roof changes need a full application.

Villas and gardens

Extensions are judged on their effect on the villa form and on garden space; basements need a Basement Impact Assessment under Westminster's basement policy.

Flats and mansion blocks

Refurbishing a flat usually needs a licence to alter from the freeholder or block management in addition to building regulations.

Approvals for house extensions in St John's Wood.

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.

Westminster decides planning and listed building applications. The St John's Wood Conservation Area removes some permitted development rights, so many rear extensions and roof changes need a full application.

What house extensions in St John's Wood 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
How we work

From site visit to handover.

  1. 01

    Site visit & consultation

    We visit, listen and measure. Brief, budget and constraints understood before any advice is given.

  2. 02

    Design & itemised quote

    Our architects and engineers draw the scheme, and from that we provide a transparent, itemised quotation for your approval.

  3. 03

    Planning & approvals

    Planning applications, building control and party wall matters handled for you.

  4. 04

    Build, managed weekly

    Our own trades, sequenced by a site manager. Progress reported every week.

  5. 05

    Handover & aftercare

    Joint snagging walk-through, documentation, and a guarantee on our workmanship.

Common questions

House Extensions in St John's Wood: your questions.

Do I need planning permission for an extension in St John's Wood?

Not always. Permitted development covers many single-storey rear extensions on houses, but the City of Westminster 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 St John's Wood do you cover?

All of St John's Wood and NW8, including Abbey Road, Hamilton Terrace, Loudoun Road, Wellington Road, Circus Road, St John's Wood High Street, and the neighbouring districts. We are based in London and our teams work across central, north, north-west, west and south-west London.

Start a project

Talk to us about an extension in St John's Wood.

We will visit, listen and explain what is possible for your property and how it would be approved. No pressure, no sales pitch.