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Timber frame extensions across Horley

We design and build timber frame extensions for houses in Horley, with a written price once the survey and design are done and one point of contact throughout.

  • Guide price in HorleyFrom £23,500 inc VAT
  • PlanningOften permitted development (3–4 m), or prior approval up to 6–8 m
  • Build time8–14 weeks on site
  • Postcode districtsRH6
Timber frame extension under construction with OSB sheathing and roof joists

Timber frame extension prices in Horley

For Horley we adjust our national guide rates by ×1.12, the factor we use for South East England. Figures include VAT; your written quote after the survey replaces them.

Typical rates in Horley: £1,960 to £3,810 per m² including VAT, depending on specification.

SizeEssentialStandardPremium
3 m × 4 m
12 m²
£23,500 – £28,500£27,500 – £36,000£34,500 – £46,000
4 m × 5 m
20 m²
£39,000 – £47,500£45,500 – £59,500£58,000 – £76,500
5 m × 6 m
30 m²
£58,500 – £71,000£68,500 – £89,500£87,000 – £114,500

Want a range for your exact size? The guide-price tool takes about a minute.

Included in a typical project

  • Frame design and structural calculations
  • Breathable wall build-up with insulation
  • Fire and acoustic details where needed
  • Cladding, render or brick slip finish
  • Foundations, often lighter than masonry

Will the council need to approve it?

In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.

Homes in conservation areas, national parks, National Landscapes (formerly AONBs), the Broads and World Heritage Sites have tighter rules, so we always check the property's status and planning history before design starts.

Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.

Building over or within 3 m of a public sewer needs the water company's consent, usually through a build-over agreement, before the foundations go in.

Applications are decided by the local planning authority (your district, borough or unitary council).

Local to Horley

We cover Horley and the postcode districts RH6. Neighbouring towns we cover include Redhill (5 miles), Reigate (5 miles), Caterham (8 miles), Banstead (10 miles).

Homes across the South East range from Victorian terraces in the older town centres to large detached houses on the edges, so the right extension type varies street by street.

From first visit to completion

Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.

  1. Free site visit

    First, a site visit: we look at the house, garden, access and drains and listen to what you need.

  2. Design and approvals

    We produce the drawings and structural design, and manage the approvals so they are in place before work starts.

  3. Fixed written price

    You receive a written, itemised price and programme. Nothing starts until you are happy with it.

  4. Build and sign-off

    Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.

Your questions about a timber frame extension in Horley

Who do I contract with for a timber frame extension in Horley?

Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.

How long does a timber frame extension take to build in Horley?

On site, typically 8 to 14 weeks once approvals are in place. Before that, allow 4–12 weeks design and approvals.

Can I see a price before committing to anything?

Yes. The guide prices on this page are adjusted for Horley, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.

Does a timber frame extension need planning permission?

The same planning rules apply as for any extension. If the cladding looks different from the house, permitted development’s matching-materials condition may mean an application is needed.

Is timber frame cheaper than brick?

It is similar overall. The frame can save time on site, but the cladding choice has a big effect on cost. Our guide range is about £1,960 to £3,810 per m² including VAT.

Book a free site visit in Horley

We will measure up, check the planning position and give you honest guide figures.

  • Free, no-obligation site visit
  • Planning route checked before you spend on drawings
  • Written price once the design is agreed
  • Building control sign-off at the end

Prefer to talk? Call 0800 088 6341 or .

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