Garden annexes in Dyfed

Covering Dyfed

Our coverage across Dyfed includes Llanelli, Ammanford, Aberystwyth and Carmarthen.

Homes in Dyfed

Across Wales you find valley terraces, coastal towns, rural stone houses and newer estates, so access, slopes and local materials all feature in the design.

What does a garden annexe involve?

We design annexes as permanent buildings with proper foundations, insulation and services, and we prepare the planning case showing how the annexe will be used as part of the main home. Connections for water, drainage and power are planned from the start.

Planning and building regulations checks under Welsh rules
Foundations and drainage connections
Accessible design options for older relatives

How much should I budget for a garden annexe?

Typical ranges for garden annexes. Ground conditions, access and specification move the final figure, which we fix in writing before work starts.

Garden annexes	Guide price incl. VAT
Standard specification	£2,400 to £2,900 per m²
Good specification	£2,900 to £3,400 per m²
High specification	£3,400 to £3,900 per m²

Planning and building rules in Dyfed

In Wales the planning rules, including what counts as permitted development, are set by the Welsh Government, and Welsh building regulations differ in places from England’s. We check both against your house before drawings are finalised, and handle party wall notices where needed.

In Wales an annexe with sleeping accommodation needs planning permission, usually with a condition tying it to the main house.

What can change the price or programme?

Drainage may need a pump if the garden falls away from the sewer.
A level threshold and wider doors make the annexe suitable for later life.

How does the project run?

Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.

Your questions answered

Do I need planning permission for a garden annexe?

Usually yes, because people will sleep in it. Outbuilding permitted development does not cover living accommodation.

How much does a garden annexe cost?

Around £2,400 to £3,900 per square metre including VAT, depending on finish and services.

Can you visit a house in Dyfed to quote?

Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.

Garden annexes in nearby towns

Learn more about garden annexes, or see every project we cover in Dyfed.