Wraparound extensions in Castleford: design, approvals and build
We design and build wraparound extensions for houses in Castleford, with a written price once the survey and design are done and one point of contact throughout.
- Guide price in CastlefordFrom £33,500 inc VAT
- PlanningUsually a householder application
- Build time14–20 weeks on site
- Postcode districtsWF6, WF10
Will the council need to approve it?
In England a wraparound extension is assessed as both a side and a rear extension, and the combination usually falls outside permitted development, so most need a householder planning application (£548 from 1 April 2026).
Homes in conservation areas, national parks, National Landscapes (formerly AONBs), the Broads and World Heritage Sites have tighter rules, so we always check the property's status and planning history before design starts.
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).
Extensions in and around Castleford
Postcode districts we cover around Castleford include WF6, WF10. The same team covers Pontefract (3 miles), Wakefield (6 miles), Leeds (9 miles), Ossett (9 miles), all within easy reach.
Darton, in South Yorkshire, is roughly 12 miles from Castleford and also on our list. Homes across Yorkshire and the Humber range from back-to-back and through terraces to large suburban semis, and extension options vary with them.
What is included
- Householder planning application
- Structural design for the corner and openings
- Survey, design and 3D layout options
- Full internal finish or kitchen-ready shell
- Foundations, drainage and any manhole relocation
What should I budget for a wraparound extension in Castleford?
Prices below are for Castleford, using the Yorkshire and the Humber factor of ×0.94. They are guide ranges including VAT for the build only, not a quote.
Typical rates in Castleford: £1,880 to £3,480 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| Compact L-shape 18 m² | £33,500 – £41,000 | £38,500 – £49,500 | £49,000 – £63,000 |
| Medium L-shape 25 m² | £47,000 – £56,500 | £54,000 – £68,500 | £68,000 – £87,000 |
| Large L-shape 32 m² | £60,000 – £72,500 | £69,000 – £87,500 | £87,000 – £111,500 |
Try the guide-price tool to see a range for your own size and finish.
From first visit to completion
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
We visit your Castleford home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Common questions in Castleford
Do you cover all of Castleford?
Yes. We cover Castleford and the surrounding parts of West Yorkshire. Site visits are free and there is no obligation.
Do I need building regulations approval in Castleford?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Who do I contract with for a wraparound extension in Castleford?
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.
Is a wraparound better than a side return alone?
It adds far more space, but costs more and needs planning permission more often. Our comparison guide sets the two side by side.
How much does a wraparound extension cost?
Our guide range is about £1,880 to £3,480 per m² including VAT. A 25 m² standard-spec wraparound typically lands around £54,000 to £68,500 in Castleford before design and council fees.
Book a free site visit in Castleford
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.