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Timber frame extensions in Didcot

Planning a timber frame extension in Didcot? We survey the house, work out the planning route, draw the design and build it, so you deal with one team from the first visit to the completion certificate.

  • Guide price in DidcotFrom £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 districtsOX11
Timber frame extension under construction with OSB sheathing and roof joists

When a timber frame extension makes sense

  • Sites where weight or speed matters
  • Homeowners who want strong energy performance
  • Contemporary designs with timber or board cladding

Moisture is the enemy of any timber building. We design ventilated cladding cavities, breather membranes and a proper damp-proof course height, and keep the frame dry during construction.

Working in Didcot

Across OX11, we can visit, measure and advise. We also work in nearby Abingdon (5 miles), Wantage (8 miles), Oxford (10 miles), Thame (14 miles).

In the South East, plenty of houses have already been extended once, which makes checking the remaining permitted development allowance an important early step.

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.

In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.

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.

If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.

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

What should I budget for a timber frame extension in Didcot?

For Didcot 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 Didcot: £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.

Our process, step by step

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

    We visit your Didcot home, measure up, talk through what you want and check the planning position.

  2. Design and approvals

    We draw the design, agree it with you and handle planning or permitted development checks and building regulations.

  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

    We build it with one project manager, book the building control inspections and hand over the completion certificate.

Questions people ask about timber frame extensions

Do I need building regulations approval in Didcot?

Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.

Will my neighbours in Didcot be involved?

If a planning application or prior approval is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.

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

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

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 Didcot

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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