House Extensions in Walton-on-Thames.
The council's guide records a great deal of extension and alteration across Walton's housing, and the house type usually decides the shape of the next addition. In Rydens, where bungalows and chalet-style houses are concentrated, a rear extension can add a larger kitchen and living space on one level. Hersham's 1940s council-built houses may suit a single-storey rear extension, which usually takes 10 to 14 weeks to build. The large detached houses of Ashley Park, on plots first sold as half-acre lots from 1930, may have room for a double-storey or wrap-around extension, with 16 to 24 weeks on site.
Read our house extension cost guideRequest Your Free Cost Proposal
Tell us about your Walton-on-Thames project. We reply within 24 hours to arrange a free site visit, then send an itemised Cost Proposal.
Our focus in Walton-on-Thames.
Because many houses here have been extended before, part of their permitted development allowance may already be used, so the planning history is the first thing to check. Burwood Park is a special low density residential area, where the scale of a scheme on its plot is likely to matter, and inside the conservation areas side and two-storey extensions need planning permission. Householder applications must include the Elmbridge Design Code Checklist, and from 1 April 2027 they go to the new East Surrey Council. For homes near the Thames or the River Mole in south Hersham, check the Environment Agency's flood map for planning before design.
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 Walton-on-Thames 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
4 miles
from our base in New Haw, measured in a straight line.
Planning in Walton-on-Thames
Homes in Walton-on-Thames fall under Elmbridge Borough Council (opens the council's website in a new tab). Its conservation areas here include Walton (Church Street/Bridge Street), Walton (Riverside), Hersham Village and Whiteley Village.
We confirm the route for your house (Permitted Development, prior approval or a planning application) before you commit.
Our nearest finished extension
Building in Walton-on-Thames
Every service we offer in Walton-on-Thames, its planning authority and nearby towns, on one page.
More about building in Walton-on-ThamesLocal housing stock
bungalows and chalet-style houses · detached houses on half-acre plots · 1940s council-built houses · early to late 20th-century suburban homes
Also serving nearby
What we deliver in Walton-on-Thames.
- 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 Walton-on-Thames 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 Walton-on-Thames home.
Tell us about your Walton-on-Thames 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.”