House Extensions in Addlestone.
Runnymede's design guidance describes the borough's older town suburbs as terraces and semi-detached houses on small or average plots, and on plots like these the depth and height of a rear extension are usually the first design questions. A single-storey rear extension takes 10 to 14 weeks to build and suits a kitchen and family room that open onto the garden. Where a semi has space at the side, a side or wrap-around extension can widen the ground floor, and a double-storey extension adds bedrooms too; a wrap-around or double-storey build usually takes 16 to 24 weeks. In the parts of New Haw that grew along Woodham Lane in the 1950s and 1960s, the distance to neighbouring houses and boundaries often shapes what works.
Read our house extension cost guideRequest Your Free Cost Proposal
Tell us about your Addlestone project. We reply within 24 hours to arrange a free site visit, then send an itemised Cost Proposal.
Our focus in Addlestone.
Many single-storey rear extensions can proceed under Permitted Development or through prior approval, and a single-storey side extension up to half the width of the original house can also be Permitted Development. Wrap-around and most two-storey schemes need a householder application, judged against the guidance in Appendix 4 of the council's Design SPD. Parts of the town near the River Wey and the Addlestone Bourne carry a flood risk, and an application there may need a flood risk assessment. Applications go to Runnymede Borough Council until 1 April 2027 and to the new West Surrey Council after that. We confirm the route for each house before design begins, and the same team then builds what it has drawn.
As a design-and-build company we take on a limited number of projects at a time, so that every one gets the attention it deserves. If you are planning work on your Addlestone home, we would like to hear about it.
The Grand Standard
- 10% deposit, then weekly billing for completed work
- One team from design to completion
- Planning & building control managed for you
How far we are
1 mile
from our base in New Haw, measured in a straight line. Addlestone is our home patch.
Planning in Addlestone
Homes in Addlestone fall under Runnymede Borough Council (opens the council's website in a new tab). Its conservation areas here include Caxton Avenue, Wey Navigation and Basingstoke Canal.
We confirm the route for your house (Permitted Development, prior approval or a planning application) before you commit.
Our nearest finished extension
Building in Addlestone
Every service we offer in Addlestone, its planning authority and nearby towns, on one page.
More about building in AddlestoneLocal housing stock
pre-1970 terraces and semis · 1950s and 1960s houses in New Haw · 1920s garden-village cottages and bungalows · denser 21st-century developments
Also serving nearby
What we deliver in Addlestone.
- 01
Single-Storey Rear
Push out into the garden to create a bright kitchen-diner or family room, often achievable under Permitted Development.
- 02
Double-Storey
Add space across two floors at once, gaining extra living space below and a bedroom or bathroom above.
- 03
Wrap-Around
Combine a rear and side-return extension into one L-shaped footprint for a dramatic increase in ground-floor space.
- 04
Side-Return
Reclaim the narrow, underused alley beside Victorian and Edwardian homes to widen and flood the rear with light.
- 05
Kitchen-Diner Extensions
Open the back of the house into a single sociable hub built around cooking, dining and family life.
- 06
Lantern Roofs & Glazing
Roof lanterns, rooflights, bi-fold and sliding doors that pour daylight deep into the new space.
Maidenhead Rear Extension & Kitchen
The Challenge
The brief was one bright, sociable kitchen-diner in place of a dark rear elevation, with the extension, kitchen, glazing, tiling, decoration and garden handled by a single team rather than a chain of separate trades.
Our Solution
We designed and built the project in-house: the extension structure, a full roof lantern at the centre of the new room, bifold doors onto a newly landscaped patio and a complete kitchen installation, carried by one team from first drawings to final decoration.
Your questions, answered.
Your Cost Proposal
Measured first, then itemised.
Every Addlestone project begins with a free consultation and a fully itemised Cost Proposal. We take a 10% deposit three weeks before the start date, then bill weekly for completed, signed-off work.
Read our house extension cost guideTransform your Addlestone home.
Tell us about your Addlestone project and we'll arrange a free, no-obligation consultation, followed by a clear, itemised Cost Proposal, usually within 24 hours.
“The attention to detail and absolute financial transparency provided by Grand Innovations completely redefined our expectations of what a home renovation could be. High standard of work, the extension is beautiful and has added so much value onto our home. Really appreciated the weekly billing, rather than a big amount upfront.”