Extending your home in Halifax
We design and build house extensions for homes in Halifax and the surrounding West Yorkshire area, with guide prices adjusted for the region.
- Postcode districtsHD6, HX1, HX2, HX3, HX4, HX5
- Price regionYorkshire and the Humber (×0.94)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Halifax 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, double-storey extensions, pitched roof extensions or side return extensions gives the most useful space for the budget.
Guide prices for Halifax
Every figure below is a guide for Halifax, 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 |
| Double-storey extensions | 32 m² | £54,000 – £71,000 |
| Kitchen extensions | 20 m² | £39,000 – £50,000 |
| Side return extensions | 11 m² | £24,500 – £31,500 |
Where we work near Halifax
Our survey diary covers Halifax, including HD6, HX1, HX2, HX3, HX4, HX5. We also work in nearby Brighouse (3 miles), Huddersfield (5 miles), Cleckheaton (6 miles), Liversedge (6 miles), Bradford (7 miles). Just over the Greater Manchester border, Saddleworth is about 13 miles away.
Do extensions in Halifax 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.
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).
Extension types and starting prices
- Double-storey extensions · from £35,500
- Kitchen extensions · from £25,000
- Utility and boot room extensions · from £13,000
- Side extensions · from £20,500
- Orangery extensions · from £28,000
- Annexe extensions · from £51,500
- Timber frame extensions · from £19,500
- Pitched roof extensions · from £20,500
- Planning permission for extensions · from £300
- Glass box extensions · from £28,000
- Extensions over a garage · from £22,500
- Home office extensions · from £15,000
- Side return extensions · from £16,500
- Wraparound extensions · from £33,500
- Building regulations for extensions · from £800
- Conservatory replacement extensions · from £18,500
- Single-storey rear extensions · from £19,500
- Porch extensions · from £3,750
- Flat roof extensions · from £19,500
- Bedroom extensions · from £24,000
- Extension plans and drawings · from £1,100
- Bungalow extensions · from £24,500
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
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
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Halifax
How much does an extension cost in Halifax?
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.
How long does an extension take in Halifax?
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 Halifax?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Halifax, and the guide-price tool gives a range for your own size and finish in about a minute.
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 Halifax
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.