The 10 extension builders from Google's results for Plymouth, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GooglePlymouth
Hobbs Home Build constructs rear, side, double, and wrap-around house extensions throughout Plymouth, Devon, and Cornwall. The team manages projects from initial groundwork and steel installation through to interior flooring and lighting.
on GooglePlymouth
Supreme Roofing and Building constructs house extensions, renovations, and attic adaptations in Plymouth. The company builds additional bedrooms and living spaces to help homeowners expand their accommodation without moving.
01752 774848 11 Richards Row, Plymouth PL3 5RH
on GooglePlymouth
Working across Plymouth, MAG Developments SW designs and constructs home extensions and loft conversions. Its services include single-storey, two-storey, and wrap-around builds managed from early sketches to final painting and handover.
01752 638877 Derriford Business Park, 4 Derriford Park, Plymouth PL6 5QZ
on GoogleFarm Colesdown Hill, Plymouth
HSK Building Services constructs house extensions, loft conversions, and custom building projects throughout Plymouth, Devon, the South Hams, and Cornwall. The firm delivers property renovations and building services for both domestic and commercial clients.
01752 717718 Unit 4, Wixenford House, Farm Colesdown Hill, Plymouth PL9 8AA
on GoogleEgg Buckland, Plymouth
House To Home Loft Conversions plans and builds house extensions for property owners in Plymouth. Its team assists with design and construction to help residents expand their living space for relaxing or entertaining.
01752 695716 31 St Edward Gardens, Egg Buckland, Plymouth PL6 5PB
on GoogleDevonport, Plymouth
General property repairs, building work, and structural upkeep are completed by Paul Little Construction across Plymouth. Located in Devonport, the firm provides building solutions for residential and commercial properties.
01752 269060 Unit 1D, Riverside Business Park, New Passage Hill, Devonport, Plymouth PL1 4SN
on GoogleCallington Rd, Saltash
Realistic uk installs modern extension systems to expand kitchens and main living spaces for homeowners in Saltash, Plymouth, Devon, and Cornwall. Their building projects focus on altering residential floor plans and introducing more natural light.
01752 841008 Tamar View Nurseries, Callington Rd, Saltash PL12 6PH
Plymouth
S Dyer Builders and Joiners carries out house extensions, new builds, loft conversions, and garage conversions across Plymouth, South Devon, and East Cornwall. The business also fits kitchens and bathrooms, installs roof windows, and lays block paving.
Saltash
Hicks Construction constructs residential extensions for property owners across Plymouth. Projects involve building additional living quarters to accommodate extra bedrooms or home offices, helping households expand their available space.
07707 820320 11 Frobisher Dr, Saltash PL12 4PN
Plymouth
DW Brickworks LTD builds single-storey, rear, and side extensions for domestic properties in Plymouth. Their team converts outdoor spaces into ground-floor room additions such as new kitchens, expanded living rooms, or garages.
In Plymouth, single storey, per m² typically costs £1,700 – £2,400. Labour in Devon runs 6% 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 plymouth". They are ranked on Google rating, online presence and other factors.
The figures above are Plymouth 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.