Single-storey extensions · Towcester

Single-storey extensions in Towcester

Our single-storey extensions service covers Towcester and the rest of Northamptonshire. You get a fixed price in writing for the agreed specification, and one person co-ordinating the trades.

Covering Towcester

Our coverage around Towcester (NN12) also includes Northampton, Buckingham and Brackley.

Homes in the East Midlands

The East Midlands combines red-brick terraces in the cities with a lot of post-war and modern estate housing, so rear extensions, garage conversions and loft conversions are all common.

What is a single-storey extension?

A single-storey extension adds one level of new floor space to the back or side of a house, usually to open up a kitchen, dining or family room. It is the most common way to gain space without moving, and many can be built without a planning application.

  • Planning or lawful development certificate where needed
  • Foundations, drainage and structural steel
  • Brickwork, roof, glazing and insulation

How much should I budget for a single-storey extension?

Use these ranges to budget for single-storey extensions; the survey turns them into a fixed price for the agreed specification.

Single-storey extensionsGuide price incl. VAT
Standard specification£2,600 to £3,000 per m²
Good specification£3,000 to £3,500 per m²
High specification£3,500 to £4,000 per m²

Do you need permission for a single-storey extension in Towcester?

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.

In England a single-storey rear extension can often go ahead under permitted development: up to 3 m deep on an attached house or 4 m on a detached one, no higher than 4 m, with eaves no higher than 3 m within 2 m of a boundary.

What can affect a single-storey extension?

  • Drains under the footprint may need diverting or a build-over agreement with the water company.
  • Kitchens and doors have long lead times, so we order them early.

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. Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
  4. Construction and completion. One site lead co-ordinates every trade through to the building control certificate.

Single-storey extensions: common questions

Do I need planning permission for a single-storey extension?

Often not in England, if the extension stays within permitted development limits: 3 m deep on an attached house or 4 m on a detached house, and no higher than 4 m. Larger ones need prior approval or a planning application. Wales, Scotland and Northern Ireland have their own rules.

Will the brick match?

We source the closest available match for colour, size and texture and agree a sample panel with you before laying.

Do you work in Towcester?

Yes. Towcester is within our coverage for single-storey extensions, along with nearby Northampton and Buckingham.

Single-storey extensions in nearby towns

Learn more about single-storey extensions, or see every project we cover in Towcester.

Planning an extension, loft or new home?

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