Garden annexes · Ewell

Garden annexes in Ewell

Homeowners in Ewell can get garden annexes from one company: the design, the paperwork and the building work sit with us rather than with three separate firms.

Covering Ewell

Our coverage around Ewell (KT17) also includes Epsom (2 miles to the south-west) and Sutton.

Homes in the South East

Many South East homes are inter-war or post-war semis and detached houses with room for rear and side extensions, while historic town centres and villages bring conservation area and listed building controls.

What goes into 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
  • Heating, hot water and electrics
  • Accessible design options for older relatives

What will a garden annexe cost?

Guide prices for garden annexes, including VAT where it applies. Your fixed price is confirmed in writing after the survey.

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

What approvals does a garden annexe need in England?

Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.

A self-contained annexe used for sleeping and living normally needs planning permission in England. Permitted development for outbuildings does not cover living accommodation.

What should Ewell 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.

From first call to completion

  1. Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
  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. 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

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.

Can you visit a house in Ewell 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 near Ewell

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

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