Garden annexes · Llanelli

Garden annexes in Llanelli

Our garden annexes service covers Llanelli and the rest of Dyfed. You get a fixed price in writing for the agreed specification, and one person co-ordinating the trades.

Covering Llanelli

Llanelli sits 13 miles south-east of Carmarthen, with Pontarddulais 6 miles to the north-east and Swansea 10 miles to the south-east.

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 is a garden annexe?

A garden annexe is a separate single-storey building in the grounds of a house with its own bedroom, bathroom and kitchenette, used by family members as part of the main household. Unlike a garden office, an annexe that people sleep in normally needs planning permission and full building regulations approval.

  • Foundations and drainage connections
  • Brick, block or timber-frame structure
  • Accessible design options for older relatives

What is the guide price for a garden annexe in Llanelli?

Use these ranges to budget for garden annexes; the survey turns them into a fixed price for the agreed specification.

Garden annexesGuide 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

How is a garden annexe approved in Llanelli?

Planning decisions in Wales are made by the local council, using permitted development rules set by the Welsh Government rather than England’s. Building regulations in Wales have their own approved documents, and the Party Wall etc. Act 1996 applies to work on shared walls and boundaries.

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

What should Llanelli homeowners check first?

  • The annexe normally has to remain part of the main household, not let as a separate home.
  • Council tax treatment depends on who lives there; check with your council.

How does the project run?

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

Garden annexes: common questions

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.

Can I rent the annexe out?

Usually not without a separate planning permission, because councils normally require it to stay part of the main house.

Can you visit a house in Llanelli 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.

Also covering

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

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