Double-storey extensions · Woodbridge

Double-storey extensions in Woodbridge

Planning double-storey extensions in Woodbridge? We design and build them for houses across Suffolk, and we fix the price for the agreed specification in writing before any building work starts.

Covering Woodbridge

Our coverage around Woodbridge (IP12) also includes Ipswich (7 miles to the west) and Felixstowe.

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 is a double-storey extension?

A double-storey extension adds new rooms on both the ground and first floor in one build, typically a larger kitchen or living space downstairs and an extra bedroom or bathroom above. Because the roof and foundations are shared, the cost per square metre is usually lower than a single-storey extension.

  • Measured survey, design and planning drawings
  • Foundations, steelwork, brick and block walls, roof
  • Joining the new first floor to the existing landing

What is the guide price for a double-storey extension in Woodbridge?

What double-storey extensions typically cost. These are guide ranges; the written quote for your house replaces them.

Double-storey extensionsGuide 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 £3,850 per m²

Planning and building rules in Woodbridge

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.

Two-storey rear extensions can sometimes be permitted development in England (no more than 3 m deep, at least 7 m from the rear boundary, roof pitch to match), but most two-storey and all two-storey side extensions need householder planning permission.

What can affect a double-storey extension?

  • Neighbours’ light is assessed using the 45-degree guide many councils use.
  • The first-floor link can mean moving a bathroom or reshaping the landing.

What are the steps?

  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. Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
  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.

Double-storey extensions: common questions

How much does a two-storey extension cost?

Typically about £2,400 to £3,850 per square metre of new floor area including VAT. A 40 m² extension across two floors is often around £100,000 to £150,000 depending on specification.

Does a two-storey extension need planning permission?

Usually yes. In England some two-storey rear extensions are permitted development, but side extensions over one storey always need planning permission.

Do you work in Woodbridge?

Yes. Woodbridge is within our coverage for double-storey extensions, along with nearby Ipswich and Felixstowe.

Double-storey extensions in nearby towns

Learn more about double-storey extensions, or see every project we cover in Woodbridge.

Planning an extension, loft or new home?

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