The 10 extension builders from Google's results for Colchester, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleWickford
Architectural firm Kirkwood supplies design plans and planning permission assistance for home extensions across Essex. The company drafts designs for house extensions and loft conversions to help clients expand their properties.
01268 944233 72 Southend Rd, Wickford SS11 8DU
on GoogleBalkerne Passage, Colchester
Hurley Porte & Duell Architects manages house extension projects from initial design concepts through to complete project delivery. Based in Colchester, the team handles single-storey, two-storey, side, and rear additions alongside loft conversions.
07429 096024 3, Balkerne Passage, Colchester CO1 1PA
on GoogleChipping Ongar, Ongar
ACS Xtra Space undertakes single and two-storey house extensions for property owners in Colchester. The team carries out general building work and structural renovations to provide households with expanded living areas.
01277 545525 Great Bansons, Banson's Ln, Chipping Ongar, Ongar CM5 9AR
on GoogleRayne Rd, Braintree
Bluemanor Windows installs double-glazed house extensions for residential properties throughout Colchester and surrounding areas. The company builds glazed additions to help local homeowners increase the usable space within their properties.
01376 322266 Unit 4, Chilford Court, Rayne Rd, Braintree CM7 2QS
on GoogleColchester
Lexden Builders provides building services for homeowners across Colchester and the wider Essex area. Its project portfolio includes domestic home improvements, property conversions, house extensions, and new builds.
01206 577591 44 Nelson Rd, Colchester CO3 9AP
on GoogleColchester
Kendall FM provides building services in Colchester, focusing on domestic extensions, loft conversions, and home refurbishments. Its trade work includes groundworks, structural modifications, and commercial alterations as well as property adaptations.
01206 588162 Unit 17, Colchester CO1 2ZF
on GoogleHighwoods, Colchester
Specialising in residential building projects, The Building co serves clients in Highwoods, Colchester, and nearby areas. The company builds property extensions, performs full interior reconfigurations and renovations, and constructs new homes from the ground up.
01206 580545 Unit B4, The Seedbed Centre, Wyncolls Rd, Highwoods, Colchester CO4 9HT
on GoogleLittle Bentley, Colchester
Morlan Building Contractors carries out home extension projects across the Colchester area, including work in nearby villages such as Langham. The team executes structural additions and domestic building works to create extra space in private properties.
01206 899356 Lemon Cottage, Tendring Rd, Little Bentley, Colchester CO7 8SH
Colchester
Unity Building Solutions carries out house extensions and property renovations for residents in Colchester. The team builds custom structural expansions to help local homeowners transform and increase their internal living area.
Colchester
The Extension Company Ltd manages home extension and renovation projects for property owners across Colchester. The firm handles construction work from initial planning through to completion.
01206 765297 3 Christ Church Ct, Colchester CO3 3AU
In Colchester, single storey, per m² typically costs £1,900 – £2,600. Labour in Essex runs 3% above 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 colchester". They are ranked on Google rating, online presence and other factors.
The figures above are Colchester 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.