Garden annexes · Thatcham

Garden annexes in Thatcham

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

Covering Thatcham

We work in Thatcham (RG18) and the places around it, including Newbury, Basingstoke and Reading.

Homes in the South East

Housing across the South East mixes inter-war semis, post-war estates and older cottages in villages and market towns, so rear and side extensions, hip-to-gable lofts and garage conversions all come up regularly.

What goes into a garden annexe?

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.

  • Design and planning application
  • Foundations and drainage connections
  • 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

Planning and building rules in Thatcham

In England we deal with the council’s planning team for permission or a lawful development certificate, with building control (the council or a registered building control approver) for inspections, and with neighbours under the Party Wall etc. Act 1996 where it applies.

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

What should I think about before starting?

  • 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.

What happens after I enquire?

  1. Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
  2. Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
  3. Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
  4. We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.

Garden annexes: common questions

How much does a garden annexe cost?

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

How long does an annexe take to build?

About 14 to 24 weeks on site after approvals.

How do I get a price for garden annexes in Thatcham?

Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.

Also covering

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

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