Self-Build Homes in Dorset: Costs, Process & Timescales
Self-build homes in Dorset are having a bit of a moment. We're getting more calls from people who've found a plot, or who want to knock down a tired 1950s bungalow in Ferndown or Broadstone and put up something that actually suits the way they live. A new house is the biggest job we take on, and it's the one where early decisions matter most, so here's how it really works when Complete Builds builds it for you.
What a new build with us actually involves
When people say "self-build" they usually mean one of two things: managing a string of subcontractors themselves, or having one builder take the whole project from groundworks to handover. We do the second. Our general construction and building team handles foundations, blockwork, roof and finishes, and our own electricians, plumbers and joiners work alongside them. You're not chasing six different firms when the kitchen fitter can't start because the plaster's still wet.
A typical project with us runs in this order:
A survey visit to the plot: access, ground conditions, existing drains, overhead cables and trees.
Design and planning drawings with your architect, or one we work with regularly.
The planning application, then discharging any conditions attached to the approval.
Building regulations approval and the structural engineer's calculations.
Groundworks, drainage and foundations.
Walls, roof and windows until the house is watertight.
First fix, plastering, second fix and finishes.
Completion certificate, warranty sign-off and handover of the keys.
How much does it cost to build a house in Dorset?
For a standard-to-good specification home built by us as main contractor, you're realistically looking at around £2,650 to £3,100 per square metre of floor area at today's prices. On a typical 150 m² three or four-bed, that puts the build itself at roughly £400,000 to £465,000.
That figure is the house. It doesn't include the plot, architect's and engineer's fees, the structural warranty or utility connections, and connections are the one that catches people out. Getting new water and electricity supplies to a rural plot outside Wimborne can be a very different bill from an infill plot in Winton where the mains already run past the front gate.
What pushes the per-square-metre figure up:
Ground conditions. The clay in parts of north Dorset and the loose sandy soils around Verwood and St Leonards need different foundation designs, and a poor site that needs piling can add tens of thousands.
Coastal exposure. Plots in Sandbanks, Canford Cliffs or Highcliffe need tougher windows, cladding and fixings to stand up to salt and wind.
Access. A narrow lane means smaller deliveries, more trips and more labour hours.
Specification. Big glazing, oak framing, underfloor heating throughout and a heat pump all add cost, though some of that pays you back in running costs.
There's some good news too. A brand-new dwelling is zero-rated for VAT when a VAT-registered builder like us constructs it, so there's no 20% on top of the build price. And genuine self-builders can usually claim exemption from the Community Infrastructure Levy, provided the claim goes in before work starts. Miss that step and the exemption is gone, which is why we raise it at the very first meeting.
Planning rules that are specific to Dorset
Most planning hurdles for a new home are the familiar ones: design, overlooking, parking and trees. Dorset has two extra ones you should know about before you buy a plot.
Protected heathland. Large parts of east Dorset and the Bournemouth, Christchurch and Poole area sit close to protected heaths. New homes within 5 km normally have to pay a mitigation contribution, and within 400 metres they're very unlikely to get permission at all. If a plot near Canford Heath or Ferndown Common looks suspiciously cheap, that's often why.
Nitrogen in Poole Harbour. New homes in the Poole Harbour catchment, which covers a big slice of central and south Dorset, have to show their wastewater won't add to nitrogen levels in the harbour. That can mean a payment towards mitigation or a specific drainage solution, and it has to be settled before permission is granted. Over the border in Hampshire, the New Forest and the Solent have their own versions of these rules, so the same homework applies if you're building near Ringwood or Lymington.
If your plot is on the coast, our notes on building seafront property in Sandbanks are worth a read too, because flood risk and exposure change the design brief again.
How long does a self-build take?
From the day you own the plot to the day you move in, a realistic timescale for most of our new builds is 18 months to two years. The build is usually the shorter part of that.
Design and drawings tend to take two to four months. Planning has an eight-week target for a single house, but once you add validation, consultee comments and the odd request for more information, we tell clients to allow three to four months. Pre-commencement conditions then need signing off before we can break ground.
On site, a typical 150 m² house takes us around nine to twelve months from first dig to handover. Getting it watertight before the worst of the winter makes a real difference, so a spring or early-summer start is the sweet spot. We do build through the colder months, though, as we explained in our guide to building in winter.
Why people choose Complete Builds for a new build
A new house is too big a job to hand to someone who mostly fits kitchens. We're a Dorset firm with our own structural, electrical, plumbing and drainage teams, and we've worked on enough sites between Poole, Bournemouth and the New Forest to know where the ground is awkward and which planning questions will come up. We always survey a plot before we price it. You get one point of contact, a clear written price broken down stage by stage, and a team that's still local when you need us after you've moved in.
Related reading
Thinking about building a new home in Dorset or Hampshire?
Whether you've got a plot, an old bungalow you're thinking of replacing, or just a rough idea and a budget, we'll walk the site with you and tell you honestly what's achievable. Book a survey visit with Complete Builds and we'll take it from there.
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