Hampstead Garden Suburb · NW11

House Extensions in Hampstead Garden Suburb, NW11

Rear, side-return, wraparound and double-storey extensions for houses in Hampstead Garden Suburb, 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 Hampstead Garden Suburb.

An extension is the surest way to get the open-plan kitchen and dining room most families want, and the houses in Hampstead Garden Suburb 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 Barnet 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
Hampstead Garden Suburb, NW11
Council
London Borough of Barnet
Housing
Arts and Crafts cottages and houses, larger Lutyens-influenced houses around Central Square, 1920s and 1930s detached houses on wide plots
Transport
Golders Green, East Finchley
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
North London

Hampstead Garden Suburb: the houses and the planning rules.

Hampstead Garden Suburb is a planned Arts and Crafts suburb begun in 1907, with cottages and houses by Unwin, Parker, Lutyens and their contemporaries set on tree-lined roads around Central Square. The whole Suburb is protected twice over, by Barnet as a conservation area and by the Hampstead Garden Suburb Trust, which must approve any external change.

Owners here typically want to extend and modernise without losing what makes the houses special. That means extensions designed in the Suburb's own language, roofs and windows that follow the Trust's guidance, and interiors that bring services and kitchens up to date while keeping the original joinery and proportions.

The whole Suburb is a conservation area, with Article 4 directions on every street and the Hampstead Garden Suburb Trust as a second consenting body.

London Borough of Barnet

Barnet decides planning applications, with Article 4 directions across the Suburb removing permitted development rights for all external work.

The Trust

The Hampstead Garden Suburb Trust must also approve external alterations under the scheme of management, with its own design guidance and application.

Materials

Handmade tiles, brick, timber windows and lime render are expected; the Trust publishes detailed guidance for each.

Approvals for house extensions in Hampstead Garden Suburb.

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.

Barnet decides planning applications, with Article 4 directions across the Suburb removing permitted development rights for all external work.

What house extensions in Hampstead Garden Suburb 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 Hampstead Garden Suburb: your questions.

Do I need planning permission for an extension in Hampstead Garden Suburb?

Not always. Permitted development covers many single-storey rear extensions on houses, but the London Borough of Barnet 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 Hampstead Garden Suburb do you cover?

All of Hampstead Garden Suburb and NW11, including Meadway, Hampstead Way, Wildwood Road, Winnington Road, Central Square, Turner Drive, 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 Hampstead Garden Suburb.

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