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Abingdon timber frame extensions, designed and built

Our design and build teams take on timber frame extensions in Abingdon, from the first measured survey through planning and building control to the finished room.

  • Guide price in AbingdonFrom £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 districtsOX14
Timber frame extension under construction with OSB sheathing and roof joists

Timber frame extension prices in Abingdon

Prices below are for Abingdon, using the South East England factor of ×1.12. They are guide ranges including VAT for the build only, not a quote.

Typical rates in Abingdon: £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

For a figure based on your own dimensions, use our guide-price tool.

Extensions in and around Abingdon

Site visits are available across Abingdon (OX14). The same team covers Didcot (5 miles), Oxford (6 miles), Wantage (8 miles), Witney (12 miles), all within easy reach.

Just over the Berkshire border, Thatcham is about 19 miles away. The South East has a broad mix of 1930s semis, post-war estates, newer developments and period cottages, and many houses have enough garden for a generous rear extension.

What we take care of

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

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.

Planning rules that apply in Abingdon

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).

What happens next

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

    A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.

  2. Design and approvals

    Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.

  3. Fixed written price

    We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.

  4. Build and sign-off

    The build is managed from start to finish, inspected at each stage and signed off on completion.

Timber frame extension questions answered

Can I see a price before committing to anything?

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

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

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

Will my neighbours in Abingdon 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.

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.

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.

Book a free site visit in Abingdon

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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