Design & build · Groundworks · Drainage · Structural engineering across South West London & Surrey

AMTA ARGC · Rear Extensions

Rear Extension Builders in South West London

Single storey rear extensions with open-plan kitchens, roof lights and full-width glazing.

Single storey rear extension with full-height glazing and timber cladding at dusk

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Single storey rear extension with full-height glazing and timber cladding at dusk

Overview

Rear Extensions: designed, engineered and built in-house

As rear extension builders we design, engineer and build single storey rear extensions that open the back of your house onto the garden. Most projects add an open-plan kitchen, dining and living space with roof lights and bi-fold or sliding doors.

We cover 9 councils across South West London and Surrey, and every project is run by one team from survey to sign-off. This service is part of our house extensions work, and it is often combined with kitchen extensions.

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What is included

What is included in our rear extensions service

01

Measured survey

Accurate measurements of the house and garden levels.

02

Design and structure

Layout, steel beams and foundation design by our engineers.

03

Groundworks

Excavation, foundations and new drainage connections.

04

Shell and finish

Walls, roof, glazing, insulation, electrics and finishes.

How we work

From first survey to building control sign-off

One team, one point of contact and one programme, from the first site visit to the completion certificate.

01

Survey

We visit, measure up and agree the brief, budget and timescales.

02

Design

Drawings and structural calculations by our own engineers.

03

Planning & building control

Planning or permitted development, building regulations and party wall help.

04

Build

Our site team builds, with one contact throughout.

05

Sign-off

Final inspections, completion certificate and handover.

Recent projects

Recent projects

Costs and timescales

Rear Extensions costs and timescales

Every project is priced after a survey, because ground conditions, structure and finishes vary from house to house. We give you an itemised quote and a written programme, so you know what you are paying for and when each stage happens.

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What affects the price

Areas we cover

Areas we cover for rear extensions

We work across nine councils in South West London and Surrey. Choose your area to see local projects, planning notes and how we work there.

Richmond, Twickenham, Teddington, Barnes, Kew

Kingston, Surbiton, New Malden, Tolworth

Wimbledon, Merton Park, Raynes Park, Morden, Mitcham

Tooting, Balham, Wandsworth, Putney, Earlsfield

Epsom, Ewell, Stoneleigh

Hounslow, Chiswick, Isleworth, Brentford

Ealing, Acton, Southall, Hanwell

Dulwich, Peckham, Camberwell, Bermondsey

Croydon, Purley, Coulsdon, South Croydon

Related services

Related services

FAQs

Rear Extensions FAQs

Straight answers to common questions. See all our FAQs or ask an engineer.

Under permitted development a terraced or semi-detached house can usually extend 3 metres, or 6 metres with prior approval. Detached houses can go further.

We can fit the kitchen or work with your chosen kitchen supplier so services and finishes line up.

It depends on size and approvals. We give you a written programme with your quote covering design, approvals and each build stage.

Richmond, Kingston, Merton, Wandsworth, Epsom & Ewell, Hounslow, Ealing, Southwark and Croydon.

Free, no-obligation quote

Get a free quote for rear extensions

Send a few details and one of our engineers will call you back to arrange a survey. Prefer to talk now? Call 020 3857 3805.