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Timber frame extensions in St Neots: design, approvals and build

Thinking about a timber frame extension for your St Neots home? Start with a free site visit: we measure up, check what the council will allow and give you honest guide figures on the day.

  • Guide price in St NeotsFrom £22,000 inc VAT
  • PlanningOften permitted development (3–4 m), or prior approval up to 6–8 m
  • Build time8–14 weeks on site
  • Postcode districtsPE19
Timber frame extension under construction with OSB sheathing and roof joists

Timber frame extension prices in St Neots

Prices below are for St Neots, using the East of England factor of ×1.06. They are guide ranges including VAT for the build only, not a quote.

Typical rates in St Neots: £1,860 to £3,600 per m² including VAT, depending on specification.

SizeEssentialStandardPremium
3 m × 4 m
12 m²
£22,000 – £27,000£26,000 – £34,000£33,000 – £43,500
4 m × 5 m
20 m²
£37,000 – £45,000£43,000 – £56,500£55,000 – £72,500
5 m × 6 m
30 m²
£55,500 – £67,000£65,000 – £84,500£82,500 – £108,500

Try the guide-price tool to see a range for your own size and finish.

What is included

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

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.

Local to St Neots

Site visits are available across St Neots (PE19). We also work in nearby Huntingdon (9 miles), Cambridge (16 miles), Peterborough (25 miles), Ely (26 miles).

Across the East of England many houses sit on generous plots, and single-storey and wraparound extensions are a natural fit.

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.

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).

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

    It starts with a visit to your house to measure, check access and talk through ideas and budget.

  2. Design and approvals

    Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.

  3. Fixed written price

    With the design and specification agreed, you get a fixed written price and a start date.

  4. Build and sign-off

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

Common questions in St Neots

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

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.

Will my neighbours in St Neots 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 St Neots?

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

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 £1,860 to £3,600 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 St Neots

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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