The 10 extension builders from Google's results for Exeter, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleClyst St Mary, Exeter
New Space Architecture creates architectural designs for home extensions in Exeter and surrounding areas. The practice balances budget and structural layout to transform domestic space and improve natural light flow.
01392 949025 The Dairy Barn Westpoint, Clyst St Mary, Exeter EX5 1DJ
on GoogleExeter
Silver Fern Developments manages residential and commercial building projects across Exeter. The team constructs rear, side and wrap-around property extensions alongside single and double-storey loft conversions. They also carry out garage conversions and structural home renovations.
01392 703373 24 Southernhay E, Exeter EX1 1QL
on GoogleTopsham, Exeter
Co Wleys Exeter undertakes domestic and commercial building works throughout the Exeter area. Its services range from house extensions, kitchen installations and property conversions to office refits, reactive maintenance and landscaping. The team also fits disabled living adaptations for local properties.
07843 598189 Barton Business Units, Unit 34 Newcourt Rd, Clyst Rd, Topsham, Exeter EX3 0DB
on GoogleExeter
Living Space Architects delivers extension and refurbishment designs for heritage homes, listed buildings and modern properties across Devon. Work includes loft conversions, stone barn transformations and open-plan family layouts in Exeter and nearby areas.
01392 270420 18 Southernhay W, Exeter EX1 1PJ
on GoogleSowton, Exeter
DMS Conversions carries out house extensions and structural alterations across Exeter and Devon. Their projects include single-storey extensions and wall removals using steel beams to create open-plan kitchen and dining areas.
07870 164973 5, CYGNET UNITS, Heron Rd, Sowton, Exeter EX2 7LL
Exeter
Timber Craft South West builds property extensions and completes renovations across Exeter, Teignmouth, Taunton, Crediton and Sidmouth. Services cover the entire process from initial planning through to construction and finishing touches.
07967 095865 11 Argyll Rd, Exeter EX4 4RX
Marsh Barton, Exeter
Culmex Construction completes domestic and commercial house extensions across Exeter, Devon and West Somerset. The business builds single-storey kitchen extensions as well as multi-storey property additions. Their team handles the entire process from initial design through to final construction.
01884 255587 Unit 59, Basepoint Business Centre, Yeoford Way, Marsh Barton, Exeter EX2 8LB
Exeter
Better Build (SW) Ltd delivers residential building projects for modern and period homes in Exeter. The team constructs house extensions, loft conversions and property conversions alongside full home renovations. Their work also covers domestic roofing and landscape gardening projects.
Exeter
Andrew Long Architects provides home extension building services in Exeter.
Exeter
Axminster Design & Build constructs rear extensions, kitchen expansions and extra bedrooms for properties in Exeter. The firm handles planning advice, building regulations compliance and full project management throughout construction.
In Exeter, single storey, per m² typically costs £1,800 – £2,500. Labour in Devon runs 2% below the UK median, which accounts for most of the difference from the same job elsewhere.
These are the firms from Google's results for "house extensions exeter". They are ranked on Google rating, online presence and other factors.
The figures above are Exeter ranges. These explain what drives them, so you can read a quote properly.
Per-square-metre prices for single-storey, two-storey, side return and kitchen extensions, costs by size, the fees outside the build price, and planning limits by nation.
The permitted development limits for extensions, lofts, porches and outbuildings in England, where the rights do not apply, what prior approval and a certificate cost, and how Wales, Scotland and NI differ.
When the Party Wall Act applies, which notice to serve and how far ahead, what your neighbour can do, what a surveyor's award costs, and the rules in Scotland and NI.
Under permitted development, three metres for a terrace or semi and four for a detached, doubled to six and eight under the prior approval process. Height, materials and how much garden you cover all carry separate limits, and none of it applies in a conservation area.
If you are excavating within three metres of a neighbour's foundations or building on the boundary, yes. You must serve notice two months before work starts. Skipping it is the most common reason extension projects stall.