Single and double storey extensions in Weybridge. Trusted, professional, 30+ years' hands-on experience.
An extension in Weybridge starts with two questions. Whether you need planning permission at all, and what Elmbridge Borough Council will measure the design against if you do. We are the contractor: we build to the architect's drawings and the engineer's calculations, and coordinate building control. Quotations are free and carry no obligation.

Elmbridge Borough Council has only two Article 4 directions. One is on land off Woodlands Lane, Cobham, the other on land off Pointers Road, Cobham. Neither is in Weybridge, so outside the Weybridge conservation areas the ordinary permitted development rules apply in full.
Both directions remove Class A of Part 2 and Class B of Part 4 of Schedule 2 of the GPDO 2015. Class A of Part 2 covers gates, fences, walls and other means of enclosure. Class B of Part 4 covers the temporary use of land, the 28 day rule. Neither is a householder extension right. So the designation to check against your address is the conservation area boundary.
Elmbridge Borough Council states that in practice it will be very difficult to extend the houses within the Templemere estate without compromising the architectural character and quality of the existing building. The estate was designated a conservation area on 13 June 2017, and the council describes it as a 1960s development of 65 houses set in 12 acres of historic grounds. There are no statutory listed buildings and no locally listed buildings inside it. All 65 houses, their boundary walls and their garages are treated as Significant Unlisted Buildings. Take that as the starting position and get planning advice before you pay for a design.
The estate is governed by its own private Act of Parliament, the St. George's Hill, Weybridge, Estate Act 1990, cited as 1990 chapter i. Elmbridge Borough Council also states that the estate has established covenants, and that these, together with its special low density designation, leave few opportunities for new development there.
In the council's Weybridge character assessment the estate is sub area WEY16, described as a designated special low density residential area of large gated detached houses, mainly two storey, some with rooms in the roof space. The council records that the houses sit in plots which historically were no less than one acre, with large front and rear gardens. Space is not the constraint on that ground. Consent is, and we would not start on site until both sides of it are settled in writing.
Three of them shape the drawing. A 45 degree daylight test applies to two storey extensions closer than 15 metres from a neighbour's window, measured along the sight line. It applies to single storey extensions closer than 8 metres, unless they project no more than 3 metres. A minimum of 1 metre is asked for between any extension above ground floor level and the site boundary, to stop side extensions creating a terracing effect.
The third is ours as much as the designer's. Elmbridge advises aiming for a minimum of 300 millimetres between the side wall of a single storey extension and the property boundary, so foundations or guttering do not encroach over the line. That figure decides how we dig, how we scaffold and whether we need your neighbour's cooperation to build the flank wall at all.
We are the builder, not the designer and not the planning consultant. That division is worth being clear about on an extension, because the consents come first and the drawings come second. We build to the architect's drawings and to the structural engineer's calculations, appoint the engineer where you do not already have one, and coordinate the building control application and inspections. Fully insured, registered in England, company number 14611254.
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FAQ
Scope first, condition second, access third. A house extensions project in a Weybridge home is costed on what the structure is actually doing, which is why an engineer is appointed where the design requires one. Getting a lorry or a skip near the KT13 property in Weybridge changes the labour line more than people expect. The Elmbridge Borough Council fee is shown separately, and the KT13 survey establishes all three before GS Renovation commits to a Weybridge figure. As a rough guide, house extensions in London typically starts from roughly £40,000 for a single-storey rear extension and rises with size and specification (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
Yes, and it matters for foundations. British Geological Survey mapping shows Claygate Member, described as sand, silt and clay, under Burwood Park, with Taplow Gravel Member in places. The town centre, Oatlands and Templemere sit on Bagshot Formation sand instead. Clay behaves differently from sand as it wets and dries, so foundation depth, and depth near trees in particular, comes from trial holes and the engineer's calculations rather than from a map.
If the site is in a medium to high flood risk area, yes. Elmbridge Borough Council does not require the sequential and exception tests for a home extension there, but it does require a site specific Flood Risk Assessment. The Environment Agency runs a flood warning area, River Wey at Weybridge, covering the river, Wey Meadows and Hamm Court, and a second covering Shepperton Lock, Hamhaugh Island and Dorney Grove. Establish the flood zone before drawings are paid for.
The Design Code SPD, adopted on 17 April 2024 and applying to planning applications submitted after 6 January 2025. It replaced the earlier Design and Character SPD, whose Weybridge companion guide of April 2012 remains available and still useful for what it says about your street. Read the older guide for character and the Design Code for the current requirements. Your architect works to the Design Code, and we build to what is consented.
Plot size is not the test. Elmbridge Borough Council records the houses in the Beechwood Avenue, Broom Way and Cleves Wood area as two storey, dating from the early 20th century, on plots averaging 0.2 hectares. What the council assesses is the effect on the character of that area and on the neighbours, not the space left over behind the house. A wide plot does not by itself answer the question the council asks.
Add two weeks at the front end. Elmbridge Borough Council notes on its planning pages that new planning applications are subject to a two week delay in checking while a backlog is processed, which happens before the application is determined. Build that into the programme rather than into the start date, because material orders and scaffold bookings follow consent. We hold the build programme against your consent dates and confirm them with you before anything is ordered.
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