Biggleswade, Bedfordshire
Bungalow rear extension in Biggleswade
We plan and build rear extensions for bungalows for homeowners in Biggleswade. Single-storey rear extensions that keep everything on one level. Start with a free site visit, then a written price once the design is agreed.
We cover Biggleswade (SG18) as part of our Bedfordshire work. For Biggleswade bungalows we design the roof first, because the low eaves decide the height of the new room.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a bungalow rear extension cost in Biggleswade?
Guide prices for a bungalow rear extension in Biggleswade start from our East of England rate of £1,960–£3,180 per square metre, including VAT. East of England prices run slightly above our West Midlands baseline; clay soils near trees are the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £23,500–£38,000 |
| 4 m wide × 6 m deep (24 m²) | £47,000–£76,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a bungalow rear extension in Biggleswade?
Planning for a bungalow rear extension in Biggleswade follows the English householder rules.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Biggleswade like to extend?
Biggleswade mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a bungalow rear extension in Biggleswade comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Bungalow rear extensions near Biggleswade
Close by, we work in Sandy, about 3.1 miles away, and Henlow, about 4.0 miles away.
- Bungalow rear extension in Sandy
- Bungalow rear extension in Henlow
- Bungalow rear extension in Baldock
- Bungalow rear extension in Letchworth Garden City
- Bungalow rear extension in St Neots
Other work in Biggleswade:
FAQ
Bungalow rear extension questions in Biggleswade
How long does a rear extension take to build in Biggleswade?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
How deep can I extend?
The same limits as a house: 3 or 4 metres in England, more with prior approval.
What postcode areas do you cover around Biggleswade?
Including SG18, and the surrounding Bedfordshire area.
Do you handle building control in Biggleswade?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
How much does a bungalow rear extension cost in Biggleswade?
As a guide, £1,960–£3,180 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £23,500–£38,000 at that rate. Your written price follows the survey.