Brick Builds
Dorchester, Dorset

House Extensions in Dorchester, Dorset

Local house extensions builders covering Dorchester (DT1–DT2), just 24 miles from our Chard base. 17+ years experience, fixed-price quotes and a 5.0★ Google rating.

Get a Free Quote01460 353121
  • 17+ years experience
  • Fixed-price contracts
  • Serving Dorset & beyond
  • Free no-obligation quotes
  • Fully insured
House Extensions in Dorchester

Professional House Extensions for Dorchester Properties

A well-designed house extension is one of the most cost-effective ways to add both living space and significant value to your home. Brick Builds has completed hundreds of extensions across Dorset, and our team brings the same care and craftsmanship to every project, large or small — whether it is an open-plan kitchen extension, a two-storey rear addition, or a side-return utility room in Dorchester.

We handle all aspects of the build, including planning applications, structural calculations, groundworks, brickwork, roofing, windows and internal fit-out. Our clients in Dorchester and across Dorset consistently tell us that our communication sets us apart — you will always know exactly what is happening on site, and our fixed-price quotes mean no nasty surprises when the project is complete.

House extensions in Dorset need to complement the existing property and satisfy local planning guidelines. Our 17 years of experience working with Dorset planning authorities means we know exactly what will and will not gain approval for your Dorchester property. We match brickwork, stone, render and rooflines precisely, so the extension looks like it was always part of the original building.

House Extensions Cost Guide for Dorchester

A single-storey kitchen or rear extension in Dorchester typically costs £30,000–£60,000 depending on size and specification. A double-storey extension ranges from £60,000–£120,000. All quotes are fixed-price — call 01460 353121 for a free no-obligation quote in Dorchester.

Planning & Building Regulations for Extensions in Dorchester

Many single-storey rear extensions in Dorchester fall under permitted development, but larger, two-storey or side extensions usually need a householder planning application to Dorset Council. We check which route applies to your home, prepare the drawings, and handle Building Regulations sign-off so your extension is fully compliant when you come to sell.

Areas We Cover Around Dorchester

Our house extensions team works across Dorchester and the DT1–DT2 area, including Poundbury, Fordington, Charminster, Puddletown, Broadmayne, Martinstown and Stinsford. Homes here are mostly Georgian and Victorian town houses, Roman-era listed buildings and Dorset chalk cottages, and we build to suit them.

  • Poundbury
  • Fordington
  • Charminster
  • Puddletown
  • Broadmayne
  • Martinstown
  • Stinsford
House extension built by Brick Builds in Somerset showing brick and stone construction

Why Choose Brick Builds for House Extensions in Dorchester?

  • Single and double-storey extensions in brick, stone, render or timber frame
  • Planning application support and full architectural liaison for Dorchester properties
  • Minimal disruption to your existing home throughout the construction process
  • Seamless tie-in to existing structures, rooflines and external finishes
  • Kitchen extensions, garden rooms and bi-fold door installations
  • Structural engineer coordination and building regulations compliance
  • Loft dormers, side returns and garage conversions treated as part of extension projects

How Your Extensions Project in Dorchester Works

  1. 1

    Free site visit

    We visit your property, talk through what you want, and check access, ground conditions and any planning constraints.

  2. 2

    Fixed-price quote

    You get a written, itemised quote with a fixed price, so you know the full cost before anything starts.

  3. 3

    Planning & approvals

    We work with your architect and engineer, and handle Building Control so every stage is signed off.

  4. 4

    Build & handover

    One team manages the build from start to finish, keeps the site tidy, and walks you through the finished work.

Frequently Asked Questions – House Extensions in Dorchester

Do I need planning permission for a house extension in Dorchester?
Many single-storey rear extensions in Dorchester qualify as Permitted Development and do not need full planning permission. However, rules vary depending on your property, whether it is listed, and whether it is in a conservation area — which is common in Dorset. We advise on this for free as part of our initial consultation.
How long does a house extension take in Dorset?
A standard single-storey extension in Dorchester takes approximately 10–16 weeks from groundworks to completion. A double-storey extension typically takes 16–24 weeks. We provide a detailed programme of works before starting so you always know what to expect.
How much does a house extension cost in Dorchester?
A single-storey extension in Dorchester typically costs £30,000–£60,000 depending on size, specification and finishes. Double-storey extensions range from £60,000–£120,000. We provide fully itemised, fixed-price quotations — call 01460 353121 for a free visit.
Can you match the existing brickwork or stonework on my Dorset property?
Yes — matching existing materials is something we take great pride in. We source appropriate facing bricks, local stone and render finishes from our established network of Dorset suppliers to ensure the extension is visually seamless with the original structure.

House Extensions in Nearby Areas

Brick Builds covers house extensions across Somerset, Devon and Dorset. Select a nearby town to see local information.

BridportDorsetSherborneDorsetBeaminsterDorsetLyme RegisDorsetWincantonSomersetYeovilSomerset
Extensions in IlminsterExtensions in CrewkerneExtensions in MartockExtensions in LangportExtensions in SomertonExtensions in TauntonExtensions in Castle CaryExtensions in GlastonburyExtensions in StreetExtensions in WellsExtensions in Shepton MalletExtensions in FromeExtensions in AxminsterExtensions in HonitonExtensions in SeatonExtensions in Ottery St MaryExtensions in SidmouthExtensions in ExeterExtensions in CullomptonExtensions in BridgwaterExtensions in Burnham-on-SeaExtensions in BrutonExtensions in WellingtonExtensions in RadstockExtensions in BathExtensions in TivertonExtensions in CreditonExtensions in DawlishExtensions in Blandford ForumExtensions in ShaftesburyExtensions in GillinghamExtensions in WarehamExtensions in Sturminster Newton
Get in Touch

Get a Free Quote from Your Local Builders

Tell us about your project and we'll get back to you promptly with honest advice and a no-obligation quote. Based in Chard, serving South Somerset, Devon and Dorset.

Location

Chard, Somerset, UK

Areas We Cover

We work across Somerset, Devon and Dorset, with most projects within a 30-mile radius of Chard. Contact us to check if we cover your area.

We aim to respond within one business day. You can also call us on 01460 353121.