Extending your home in Oakham
Planning an extension in Oakham? Compare extension types, see guide prices adjusted for Oakham and book a free site visit.
- Postcode districtsLE15
- Price regionEast Midlands (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation

Areas we cover around Oakham
Postcode districts we cover around Oakham include LE15. We also work in nearby Uppingham (0 miles). Stamford, in Lincolnshire, is roughly 9 miles from Oakham and also on our list.
Approvals for an extension in Oakham
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).
Choosing the right extension in Oakham
The East Midlands has plenty of inter-war and post-war semis and detached houses with room to extend, alongside Victorian terraces in the towns.
For many houses here, conservatory replacement extensions, single-storey rear extensions or side extensions gives the most useful space for the budget.
What extensions cost in Oakham
Every figure below is a guide for Oakham, adjusted for East Midlands build costs (×0.95) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
Choose an extension type
- Extension plans and drawings · from £1,100
- Bedroom extensions · from £24,500
- Double-storey extensions · from £36,000
- Single-storey rear extensions · from £19,500
- Extensions over a garage · from £22,500
- Conservatory replacement extensions · from £19,000
- Planning permission for extensions · from £300
- Orangery extensions · from £28,500
- Building regulations for extensions · from £850
- Glass box extensions · from £28,500
- Timber frame extensions · from £19,500
- Kitchen extensions · from £25,500
- Side return extensions · from £17,000
- Pitched roof extensions · from £21,000
- Side extensions · from £20,500
- Annexe extensions · from £52,000
- Wraparound extensions · from £34,000
- Utility and boot room extensions · from £13,000
- Home office extensions · from £15,000
- Porch extensions · from £3,800
- Bungalow extensions · from £24,500
- Flat roof extensions · from £19,500
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
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 Oakham
How much does an extension cost in Oakham?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Oakham, and the guide-price tool gives a range for your own size and finish in about a minute.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
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 Oakham
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.