House Extensions in Dorchester, Dorset
Expert house extensions contractors serving Dorchester and the surrounding Dorset area. Trusted builders with 17+ years experience, transparent fixed-price quotes and outstanding results.
- 17+ years experience
- Fixed-price contracts
- Serving Dorset & beyond
- Free no-obligation quotes
- Fully insured
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.

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
Frequently Asked Questions �� House Extensions in Dorchester
Do I need planning permission for a house extension in Dorchester?
How long does a house extension take in Dorset?
How much does a house extension cost in Dorchester?
Can you match the existing brickwork or stonework on my Dorset property?
House Extensions in Nearby Areas
Brick Builds covers house extensions across Somerset, Devon and Dorset. Select a nearby town to see local information.
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.
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.