If you are pricing up a self build or replacement dwelling in Devon, the honest answer is that costs vary widely, but not unpredictably. Most people building locally in 2026 should budget somewhere between 2,200 and 3,500 pounds per square metre for the build itself, before land, fees and VAT quirks. Here is how that breaks down, and what moves the number for better or worse.
For a straightforward new build to a decent standard, most Devon projects land between roughly 2,200 and 2,800 pounds per square metre. That means a modest three bedroom house of around 110 square metres might cost 240,000 to 310,000 pounds to build, while a larger 180 square metre four bedroom home could run from 400,000 to well over 500,000 pounds. Higher specification builds, with stone facades, bespoke joinery or complex glazing, can push past 3,500 pounds per square metre.
These figures cover the construction itself: groundworks, structure, roof, windows, first and second fix, kitchen, bathrooms and decoration. They do not include buying the plot, which in East Devon is often the single biggest cost. Serviced plots near the coast, in places like Budleigh Salterton, Sidmouth or Exmouth, regularly fetch 200,000 pounds or more before a single foundation is dug.
Devon carries a few cost pressures you will not find in every county. Many plots here are sloping, which means more excavation, retaining structures and engineered foundations. Coastal sites bring exposure to salt air and wind driven rain, so specifications for cladding, fixings and windows need to be more robust. If you are building in or near a conservation area, which covers much of Budleigh Salterton and the surrounding villages, planners may require natural slate, lime render or timber windows, all of which cost more than standard alternatives.
Access is another quiet cost driver. Narrow Devon lanes can rule out large deliveries and big machinery, meaning materials arrive in smaller loads and some work takes longer. Ground conditions vary too: parts of East Devon sit on clay or have high water tables, and a soil survey occasionally turns up a requirement for piled foundations, which can add 15,000 to 40,000 pounds depending on the size of the house.
The build cost is only part of the picture. Before work starts you will need planning drawings, structural calculations, a topographical survey and usually a soil investigation. Allow 8 to 15 percent of the build cost for professional fees, planning applications, building control and warranties combined. Connecting services is another common surprise: a new water, electricity and drainage connection can cost anywhere from 5,000 to 25,000 pounds depending on how far the mains are from your plot, and rural plots sometimes need a treatment plant instead of mains drainage.
There is good news on tax. New build homes are zero rated for VAT, so a VAT registered builder should not charge VAT on labour for a qualifying new dwelling, and self builders can reclaim VAT on materials through the HMRC DIY housebuilders scheme. That is a meaningful saving compared with renovation work, which usually attracts VAT at 20 percent.
The single best way to control cost is to finish your design decisions before work starts. Changes made on paper cost nothing; changes made once the frame is up cost real money and time. A simple rectangular footprint with a straightforward roof is dramatically cheaper per square metre than a design full of dormers, valleys and corners, so if budget is tight, spend your money on space and insulation rather than complexity.
It also pays to get a detailed, itemised quote rather than a single headline figure. A proper breakdown lets you see exactly what is included, compare like with like between builders, and spot provisional sums that could grow later. Locally based builders who know East Devon's planning authorities, ground conditions and suppliers can often prevent expensive surprises simply because they have dealt with the same lanes, slopes and conservation officers before.
Once you include the plot, building rarely works out much cheaper than buying, but you get exactly the house you want and new builds are zero rated for VAT. Where self build wins is on running costs, since a new home built to current regulations is far cheaper to heat than most of Devon's older housing stock.
A typical self build takes 9 to 15 months on site, plus 6 to 12 months beforehand for design, planning permission and building regulations approval. Sloping sites, conservation area requirements or bat and ecology surveys can extend the planning stage.
No, labour on a qualifying new dwelling is zero rated, and you can reclaim VAT paid on materials through the HMRC DIY housebuilders scheme after completion. Keep every invoice, as claims must be submitted with full documentation within six months of finishing.
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