Darton side return extensions, designed and built
We design and build side return extensions for houses in Darton, with a written price once the survey and design are done and one point of contact throughout.
- Guide price in DartonFrom £16,500 inc VAT
- PlanningOften permitted development; party wall notice usual
- Build time10–14 weeks on site
- Postcode districtsS75
Working in Darton
We cover Darton and the postcode districts S75. Nearby, we also take on projects in Barnsley (3 miles), Rawmarsh (12 miles), Rotherham (13 miles), Adwick le Street (14 miles).
Wakefield, in West Yorkshire, is roughly 7 miles from Darton and also on our list. Yorkshire and the Humber combines stone-built terraces in the Pennine towns with brick semis and newer estates elsewhere, so materials and roof details need matching with care.
Will the council need to approve it?
In England a single-storey side return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
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 over or within 3 m of a public sewer needs the water company's consent, usually through a build-over agreement, before the foundations go in.
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 we take care of
- New boundary wall or raised party wall
- Glazed, sloping or flat roof with rooflights
- Removal of the side wall and new steelwork
- Party wall notice support (England and Wales)
- Survey of the outrigger, boundary wall and drainage
What should I budget for a side return extension in Darton?
For Darton we adjust our national guide rates by ×0.94, the factor we use for Yorkshire and the Humber. Figures include VAT; your written quote after the survey replaces them.
Typical rates in Darton: £1,970 to £3,570 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 1.8 m × 4.5 m 8 m² | £16,500 – £20,500 | £18,000 – £23,000 | £22,500 – £29,000 |
| 2 m × 5.5 m 11 m² | £21,500 – £26,000 | £24,500 – £31,500 | £31,000 – £39,500 |
| 2.2 m × 7 m 15 m² | £29,500 – £35,500 | £33,500 – £42,500 | £42,000 – £54,000 |
Want a range for your exact size? The guide-price tool takes about a minute.
What happens next
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
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Common questions in Darton
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Darton, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do I need building regulations approval in Darton?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Do you cover all of Darton?
Yes. We cover Darton and the surrounding parts of South Yorkshire. Site visits are free and there is no obligation.
How much does a side return extension cost?
Our guide range is about £1,970 to £3,570 per m² including VAT, so a typical 2 m × 5.5 m infill lands around £24,500 to £31,500 at standard spec in Darton, more in London.
Can I combine a side return with a rear extension?
Yes. That combination is a wraparound extension, which adds the most space to a terraced house.
Book a free site visit in Darton
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.