Garden annexes · King's Lynn

Garden annexes in King's Lynn

We take on garden annexes in King's Lynn as a complete project: survey, drawings, planning or permitted development checks, building control and the construction itself.

Covering King's Lynn

Our coverage around King's Lynn (PE30) also includes Wisbech, Swaffham and March.

Homes in the East of England

The East of England has a large stock of post-war and modern estate housing alongside period homes in market towns, which makes garage conversions, single-storey extensions and loft conversions popular.

What do you get with 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.

  • Design and planning application
  • Foundations and drainage connections
  • Accessible design options for older relatives

What is the guide price for a garden annexe in King's Lynn?

Indicative costs for garden annexes. London and the South East usually sit towards the top of each range.

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 King's Lynn?

English projects need planning clearance from the local council, building regulations sign-off from building control, and party wall notices where the work is on or near a shared boundary. We prepare and manage all three.

A self-contained annexe used for sleeping and living normally needs planning permission in England.

What can change the price or programme?

  • A level threshold and wider doors make the annexe suitable for later life.
  • 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. We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
  3. Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
  4. Construction and completion. One site lead co-ordinates every trade through to the building control certificate.

Garden annexes: common questions

How long does an annexe take to build?

About 14 to 24 weeks on site after approvals.

Can you make it wheelchair accessible?

Yes. Level access, wider doors and a level-access shower can be designed in from the start.

Who deals with the council for a project in King's Lynn?

We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.

Other towns nearby

Learn more about garden annexes, or see every project we cover in King's Lynn.

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