Bletchley, Buckinghamshire
Bungalow rear extension in Bletchley
Thinking about a bungalow rear extension in Bletchley? Single-storey rear extensions that keep everything on one level. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Bletchley is covered from our Buckinghamshire round, including MK1, MK2 and MK3. For bungalows in Buckinghamshire, a rear extension is the usual way to add space without adding stairs.
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 Bletchley?
For Bletchley we work from the South East England rate: £2,070–£3,360 per square metre of new floor, including VAT, standard specification. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £25,000–£40,500 |
| 4 m wide × 6 m deep (24 m²) | £49,500–£80,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a bungalow rear extension in Bletchley?
Here is how the rules in England apply to a bungalow rear extension in Bletchley.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is 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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Bletchley like to extend?
Commuter semis and detached houses make up much of Bletchley, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a bungalow rear extension in Bletchley comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Bungalow rear extensions near Bletchley
Neighbouring places we cover include Milton Keynes (3.5 miles) and Leighton Buzzard (6.2 miles).
- Bungalow rear extension in Milton Keynes
- Bungalow rear extension in Leighton Buzzard
- Bungalow rear extension in Newport Pagnell
- Bungalow rear extension in Flitwick
- Bungalow rear extension in Ampthill
Other work in Bletchley:
FAQ
Bungalow rear extension questions in Bletchley
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
What postcode areas do you cover around Bletchley?
Including MK1, MK2 and MK3, and the surrounding Buckinghamshire area.
Is a bungalow extension cheaper?
The rates are similar per square metre; roof work can add a little.
Can you match the brick or stone on my Bletchley house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How long does a rear extension take to build in Bletchley?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
How much does a bungalow rear extension cost in Bletchley?
As a guide, £2,070–£3,360 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £25,000–£40,500 at that rate. Your written price follows the survey.