What is a wraparound extension?
A wraparound extension combines a side return and a rear extension into one L-shaped addition. It gives the largest possible ground floor, often creating an open-plan kitchen, dining and living space across the whole width of the house.
How much does a wraparound extension cost in Bentley?
In Bentley, a wraparound extension typically costs £2,050–£3,000 per m² of floor area, including VAT at 20% (standard rate). For a typical 28 m² project that is roughly £57,500–£84,000. Building costs in Yorkshire and the Humber run about 7% below the UK average, and the figures for Bentley are adjusted to reflect that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (20 m²) | £41,000–£60,000 |
| Typical project (28 m²) | £57,500–£84,000 |
| Larger project (39 m²) | £80,000–£117,000 |
| Rate per m² | £2,050–£3,000 |
The main things that change the cost:
- Party wall surveyor fees for one or both neighbours
- Total footprint and the amount of glazing
- Drainage changes
- Kitchen and flooring specification
Your exact price depends on the survey and drawings. The guide price tool gives a quick range in the meantime.
Do you need planning permission for a wraparound extension in Bentley?
Here is how the rules work for a wraparound extension in England. In England a wraparound extension combines side and rear elements, which normally takes it outside permitted development, so a householder planning application is made.
Where work involves a shared wall, building on the boundary, or digging foundations within 3 metres of a neighbour’s building and deeper than its foundations (or within 6 metres for deeper work), the Party Wall etc. Act 1996 applies and notices must be served before work starts.
If the answer is not clear-cut, we can apply for formal confirmation before you commit to the build.
What we handle
From survey to sign-off, the job normally involves:
- Walls, roof and glazing
- Design and planning application
- Removal of internal and external walls
- Structural engineer’s design for steels and supports
- Underfloor heating option, electrics and plastering
- Building control completion
How long does it take?
Expect 12 to 18 weeks on site. Allow time beforehand for drawings and approvals, usually 3 to 4 months.
Building in Bentley
Yorkshire and the Humber has stone and brick terraces as well as inter-war and newer estates, so materials matching is an early design question.
We work across Bentley and neighbouring areas such as Doncaster, Adwick le Street and South Elmsall. Postcodes we cover in Bentley include DN5.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about wraparound extensions in Bentley
Do you build wraparound extensions in Bentley?
Yes. We build wraparound extensions across Bentley, including postcodes DN5. Every project starts with a free home visit.
Does a wraparound extension need planning permission?
Almost always. Combining side and rear elements usually goes beyond permitted development limits, so a householder planning application is normally made.
Will both neighbours be affected?
Usually only the neighbour on the side return side, but rear foundations near either boundary can trigger party wall notices.
How long does it take to build?
Around 12 to 18 weeks on site after approvals. Design, planning and party wall matters usually take 3 to 4 months beforehand.
How much does a wraparound extension cost in Bentley?
In Bentley, a wraparound extension typically costs £2,050–£3,000 per m² of floor area, including VAT at 20% (standard rate). A typical 28 m² project comes to roughly £57,500–£84,000. Your fixed price depends on the survey and drawings.