House extensions · Colchester
House Extensions in Colchester
We design and build house extensions across Colchester, and we handle the whole job as one team, from the first drawings and the planning application through to the finished, decorated room. Single storey, double storey, kitchen extensions, side returns, we build them across the city and its surrounding villages, on everything from new homes in the garrison quarter to Victorian terraces and period houses near the old centre.
Your detailed quotation
Priced line by line, before you commit
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Essex
Rear extension
Detailed quotations
Itemised before work starts
The price we quote
is the price you pay
Director-led
Every project overseen by Jason Berry
On schedule
Agreed timeline, kept
House extensions in Colchester
If you are weighing up extending rather than moving, the quickest way to find out what is possible is a free visit.
Thinking about extending your Colchester home?
Book a free, no-obligation visit. We will look at what is possible, talk through what you want the space to do, and give you honest advice on the build and the planning.
Why homeowners choose us
Why homeowners here choose us
You are letting a team into your home for months, so it comes down to confidence. One team runs the job throughout, led by the company director, so there is always a clear person to speak to. We handle the planning and building regulations, and we work as readily on a straightforward estate extension as on a careful job in a conservation area. Our quotes are properly itemised, not a single lump sum. And most of our work comes through recommendation.
Matched to your home
The extensions we build here
Colchester has one of the most varied housing stocks in Essex, and we work across all of it.
- Rear and wrap-around extensions on the new homes in the garrison development and the estates around the edges.
- Side return and rear extensions on the Victorian and Edwardian terraces near the centre and the station.
- Sympathetic work on the period and listed homes of the old town and the Dutch Quarter.
- Double storey extensions and loft conversions for growing families.
Planning & regulations
What the planning usually comes down to
Many extensions in Colchester can go ahead under permitted development, but a few local points are worth checking before you commit to a design.
The historic core has several conservation areas, including the old town and the Dutch Quarter, where design and materials are looked at closely and some permitted development rights fall away, and the city has a large number of listed buildings that need separate consent. On the newer developments, including much of the garrison quarter, permitted development rights are often removed by planning condition, so even a modest extension can need a full application. It is one of the first things we check, because assuming you are covered when you are not is an expensive mistake.
Your authority is Colchester City Council, becoming part of the new North East Essex Council in 2028. Working out which of these applies to your home, and handling the application if one is needed, is our job rather than yours.
Local conditions
The ground under Colchester
Colchester sits mostly on London Clay, with sands and gravels along the Colne valley and the terraces above it. London Clay swells and shrinks with the seasons and moves most near mature trees, while near the river the ground turns softer and wetter.
On a plot near a large tree, or down towards the Colne, foundations often need more depth and thought than people expect. We check the ground early, and on trickier sites we get it properly investigated before pricing, so the groundworks hold no surprises.
Cost, in the open
What an extension costs in Colchester
Cost comes down to size, specification, structural work and finish, and heavy ground or heritage work can add to it.
As a rough guide, single-storey extensions commonly run at a few thousand pounds per square metre, with double storey often better value per square metre. That is a starting point, not a quote. Our cost calculator gives an early estimate, and a free site visit gives you a real, itemised figure.
Want a real figure for your project?
Book a free site visit and we will price the actual work, with a clear itemised quote and no pressure to proceed.
How it works
How your build will run
We set out the actual programme for your project at the site visit, allowing for its size, the ground and the season. For a feel of how a typical extension runs week by week, from groundworks to handover, see our guide on what to expect during your build.
Why stay
A city worth staying in
Once people have found the answer they came for, this is where the character of the place earns its keep. Colchester is Britain's oldest recorded town and now a city, with Roman walls, a Norman castle and streets of genuine history, alongside a university, a garrison and fast trains to London. It is a place families want to stay in, which is exactly why so much of our work here is extending and improving rather than helping people move on.
What homeowners say
Trusted by homeowners across Essex
“From the moment he arrived he had a real professionalism and vision for what we could achieve. Jason was trustworthy and honest which made the whole build a pleasure.”
Kim and Tony, Ongar
Full house extension
Director-led
Common questions
House extension questions in Colchester, answered straight
The questions every Colchester homeowner asks at the first site visit.
Anything else? Call 07920 731533 and you’ll speak to Jason Berry, not a call centre.
Often not, but it depends on your home. The old town and Dutch Quarter conservation areas reduce permitted development rights, listed buildings need separate consent, and much of the newer housing, including the garrison quarter, has those rights removed by planning condition. We check your exact address with Colchester City Council and handle any application.
Yes. Colchester has a great deal of period and listed property, especially around the old town and the Dutch Quarter, and we extend and renovate it sympathetically, matching materials and handling listed building consent where it applies.
Colchester sits mostly on London Clay, which moves with the seasons and near trees, with softer ground down in the Colne valley. That affects foundations and drainage, so we check it before starting rather than meeting it mid-build.
Call us on 07920 731533 or send the enquiry form. We arrange a free, no-obligation site visit, then give you a clear, itemised written quote for the actual project.
Colchester itself, including the garrison quarter, Lexden, Stanway, the Hythe and the surrounding villages such as West Bergholt, Wivenhoe and Marks Tey. Call us to confirm your postcode.
Start your extension
Thinking about extending your Colchester home?
Call 07920 731533, request a callback, or book a free, no-obligation site visit. We will look at what is possible, talk through what you want the space to do, and give you honest advice on the build and the planning. No pressure, and no obligation to proceed.