Home extensions in Rushden
More space without moving: we plan and build extensions across Rushden, with one team for the drawings, the council and the build.
- Postcode districtsNN10
- Price regionEast Midlands (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Rushden extension prices at a glance
Prices on this page use our East Midlands factor of ×0.95, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
Rushden and surrounding towns
Site visits are available across Rushden (NN10). We also work in nearby Wellingborough (4 miles), Kettering (9 miles), Northampton (12 miles), Corby (15 miles), Market Harborough (19 miles). Just over the Bedfordshire border, Bedford is about 12 miles away.
Planning and building control in Rushden
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
Which extension suits a Rushden home?
Homes across the East Midlands often have usable side land or a driveway beside the house, which opens up side and wraparound options.
Depending on the plot, single-storey rear extensions and conservatory replacement extensions are often the strongest options, with side extensions worth considering where there is room.
Extension types and starting prices
- Annexe extensions · from £52,000
- Glass box extensions · from £28,500
- Wraparound extensions · from £34,000
- Single-storey rear extensions · from £19,500
- Extension plans and drawings · from £1,100
- Flat roof extensions · from £19,500
- Building regulations for extensions · from £850
- Orangery extensions · from £28,500
- Double-storey extensions · from £36,000
- Side extensions · from £20,500
- Bedroom extensions · from £24,500
- Side return extensions · from £17,000
- Planning permission for extensions · from £300
- Conservatory replacement extensions · from £19,000
- Bungalow extensions · from £24,500
- Kitchen extensions · from £25,500
- Timber frame extensions · from £19,500
- Porch extensions · from £3,800
- Home office extensions · from £15,000
- Pitched roof extensions · from £21,000
- Utility and boot room extensions · from £13,000
- Extensions over a garage · from £22,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Rushden
How much does an extension cost in Rushden?
Using our East Midlands factor (×0.95), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,500 including VAT, and a 32 m² two-storey extension £54,500 to £71,500. Your written price follows the survey.
How long does an extension take in Rushden?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Do I need planning permission for an extension in Rushden?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
Do you cover all of Rushden?
Yes, including the surrounding parts of Northamptonshire. Site visits are free and there is no obligation.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Rushden
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.