Home extensions in Ossett
Planning an extension in Ossett? Compare extension types, see guide prices adjusted for Ossett and book a free site visit.
- Postcode districtsWF5, WF12
- Price regionYorkshire and the Humber (×0.94)
- Planning rulesEngland
- Site visitFree, no obligation
Guide prices for Ossett
We publish guide prices so you can budget before anyone visits. For Ossett they are adjusted by ×0.94, the factor we use across Yorkshire and the Humber.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Orangery extensions | 16 m² | £42,000 – £53,000 |
| Extensions over a garage | 12 m² | £23,500 – £30,500 |
| Kitchen extensions | 20 m² | £39,000 – £50,000 |
| Side return extensions | 11 m² | £24,500 – £31,500 |
| Conservatory replacement extensions | 14 m² | £28,000 – £36,500 |
Areas we cover around Ossett
Our survey diary covers Ossett, including WF5, WF12. Neighbouring towns we cover include Dewsbury (2 miles), Batley (3 miles), Wakefield (3 miles), Morley (4 miles), Heckmondwike (4 miles). For homes towards South Yorkshire, Darton is around 7 miles away.
Which extension suits a Ossett home?
Homes across Yorkshire and the Humber range from back-to-back and through terraces to large suburban semis, and extension options vary with them.
For many houses here, pitched roof extensions, double-storey extensions or single-storey rear extensions gives the most useful space for the budget.
Planning and building control in Ossett
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.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
All extension types we build in Ossett
- Home office extensions · from £15,000
- Annexe extensions · from £51,500
- Porch extensions · from £3,750
- Utility and boot room extensions · from £13,000
- Double-storey extensions · from £35,500
- Glass box extensions · from £28,000
- Side return extensions · from £16,500
- Building regulations for extensions · from £800
- Conservatory replacement extensions · from £18,500
- Timber frame extensions · from £19,500
- Bedroom extensions · from £24,000
- Kitchen extensions · from £25,000
- Orangery extensions · from £28,000
- Extensions over a garage · from £22,500
- Wraparound extensions · from £33,500
- Bungalow extensions · from £24,500
- Side extensions · from £20,500
- Flat roof extensions · from £19,500
- Single-storey rear extensions · from £19,500
- Planning permission for extensions · from £300
- Pitched roof extensions · from £20,500
- Extension plans and drawings · from £1,100
Free site visit
We visit your Ossett home, measure up, talk through what you want and check the planning position.
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
With the design and specification agreed, you get a fixed written price and a start date.
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 Ossett
How much does an extension cost in Ossett?
Using our Yorkshire and the Humber factor (×0.94), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,000 including VAT, and a 32 m² two-storey extension £54,000 to £71,000. Your written price follows the survey.
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 Ossett?
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 Ossett?
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.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Book a free site visit in Ossett
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.