Market Harborough house extensions
We design and build house extensions for homes in Market Harborough and the surrounding Northamptonshire area, with guide prices adjusted for the region.
- Postcode districtsLE16
- Price regionEast Midlands (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Planning and building control in Market Harborough
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 single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
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 Market Harborough home?
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.
The types we would usually look at first for a home in Market Harborough are side extensions, single-storey rear extensions and conservatory replacement extensions, depending on the garden and how the house is laid out.
Where we work near Market Harborough
Across LE16, we can visit, measure and advise. We also work in nearby Corby (10 miles), Kettering (10 miles), Wellingborough (15 miles), Northampton (16 miles), Daventry (18 miles). Just over the Leicestershire border, Wigston is about 10 miles away.
Market Harborough extension prices at a glance
Use these Market Harborough guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
| 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 |
Extension types and starting prices
- Bungalow extensions · from £24,500
- Glass box extensions · from £28,500
- Home office extensions · from £15,000
- Porch extensions · from £3,800
- Orangery extensions · from £28,500
- Extension plans and drawings · from £1,100
- Kitchen extensions · from £25,500
- Planning permission for extensions · from £300
- Extensions over a garage · from £22,500
- Wraparound extensions · from £34,000
- Pitched roof extensions · from £21,000
- Annexe extensions · from £52,000
- Flat roof extensions · from £19,500
- Double-storey extensions · from £36,000
- Bedroom extensions · from £24,500
- Single-storey rear extensions · from £19,500
- Side extensions · from £20,500
- Utility and boot room extensions · from £13,000
- Conservatory replacement extensions · from £19,000
- Timber frame extensions · from £19,500
- Side return extensions · from £17,000
- Building regulations for extensions · from £850
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
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Market Harborough
How much does an extension cost in Market Harborough?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Market Harborough, 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.
How long does an extension take in Market Harborough?
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.
Book a free site visit in Market Harborough
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.