House extensions in Dewsbury
Planning an extension in Dewsbury? Compare extension types, see guide prices adjusted for Dewsbury and book a free site visit.
- Postcode districtsWF5, WF12, WF13, WF14, WF16, WF17
- Price regionYorkshire and the Humber (×0.94)
- Planning rulesEngland
- Site visitFree, no obligation
Do extensions in Dewsbury need planning permission?
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.
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).
What works best for Dewsbury houses?
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, side return extensions, single-storey rear extensions or double-storey extensions gives the most useful space for the budget.
Dewsbury and surrounding towns
We cover Dewsbury and the postcode districts WF5, WF12, WF13, WF14, WF16, WF17. Neighbouring towns we cover include Batley (1 mile), Ossett (2 miles), Heckmondwike (2 miles), Liversedge (3 miles), Mirfield (3 miles). For homes towards South Yorkshire, Darton is around 8 miles away.
Dewsbury extension prices at a glance
Every figure below is a guide for Dewsbury, adjusted for Yorkshire and the Humber build costs (×0.94) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £54,000 – £68,500 |
| Conservatory replacement extensions | 14 m² | £28,000 – £36,500 |
| Extensions over a garage | 12 m² | £23,500 – £30,500 |
| Kitchen extensions | 20 m² | £39,000 – £50,000 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,000 |
Every extension type in Dewsbury
- Orangery extensions · from £28,000
- Single-storey rear extensions · from £19,500
- Planning permission for extensions · from £300
- Conservatory replacement extensions · from £18,500
- Annexe extensions · from £51,500
- Side extensions · from £20,500
- Building regulations for extensions · from £800
- Bungalow extensions · from £24,500
- Pitched roof extensions · from £20,500
- Extensions over a garage · from £22,500
- Utility and boot room extensions · from £13,000
- Extension plans and drawings · from £1,100
- Porch extensions · from £3,750
- Timber frame extensions · from £19,500
- Wraparound extensions · from £33,500
- Glass box extensions · from £28,000
- Bedroom extensions · from £24,000
- Home office extensions · from £15,000
- Double-storey extensions · from £35,500
- Side return extensions · from £16,500
- Kitchen extensions · from £25,000
- 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 draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
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 Dewsbury
How much does an extension cost in Dewsbury?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Dewsbury, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Dewsbury?
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 you cover all of Dewsbury?
Yes, including the surrounding parts of West Yorkshire. Site visits are free and there is no obligation.
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 Dewsbury
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.