Downham Market, Norfolk
Bungalow rear extension in Downham Market
Single-storey rear extensions that keep everything on one level. If you live in Downham Market and want to know what a bungalow rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
We cover Downham Market (PE38) as part of our Norfolk work. For bungalows in Norfolk, 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 Downham Market?
Guide prices for a bungalow rear extension in Downham Market 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 |
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 Downham Market?
Whether your bungalow rear extension in Downham Market needs a planning application depends on its size, your house and any local restrictions.
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.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
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 Downham Market like to extend?
Post-war semis and newer estates are typical of Downham Market, and many have room for a full-width extension. Shrinkable clay is common in the East of England, so foundations near trees and hedges are designed to NHBC-style depth guidance.
How a bungalow rear extension in Downham Market comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
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 Downham Market
Close by, we work in King's Lynn, about 10.0 miles away, and Wisbech, about 10.3 miles away.
- Bungalow rear extension in King's Lynn
- Bungalow rear extension in Wisbech
- Bungalow rear extension in March
- Bungalow rear extension in Ely
- Bungalow rear extension in Chatteris
Other work in Downham Market:
FAQ
Bungalow rear extension questions in Downham Market
Is the site visit in Downham Market free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can you match the brick or stone on my Downham Market house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Is a bungalow extension cheaper?
The rates are similar per square metre; roof work can add a little.
How long does a rear extension take to build in Downham Market?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
How much does a bungalow rear extension cost in Downham Market?
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.