Whitchurch, Cardiff and the Vale
Side return extension in Whitchurch
Thinking about a side return extension in Whitchurch? Infilling the narrow passage beside a Victorian or Edwardian back addition. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Whitchurch sits in Cardiff and the Vale, with postcode districts including CF5, CF14 and CF15. Side return projects in Whitchurch usually start with a drainage survey of the side passage.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a side return extension cost in Whitchurch?
Guide prices for a side return extension in Whitchurch start from our Wales rate of £2,140–£3,530 per square metre, including VAT. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £25,500–£42,500 |
| 2.5 m wide × 7 m deep (17.5 m²) | £37,500–£62,000 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a side return extension in Whitchurch?
The planning route for a side return extension in Whitchurch is set by Wales's householder rules and your council.
Welsh side-extension rules limit a single-storey side addition to 4 metres high and a 50% increase in the width of the original house, with tighter limits in conservation areas. Wraparounds usually need a planning application.
In Wales, as in England, the Party Wall etc. Act 1996 requires notice to neighbours before work to a shared wall or excavation near their foundations.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Whitchurch like to extend?
Whitchurch has Victorian terraces near the centre and semis further out. Welsh permitted development allows up to 4 metres at the rear for many houses.
How a side return extension in Whitchurch comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Side return extensions near Whitchurch
Neighbouring places we cover include Rhiwbina (1.2 miles) and Cardiff (2.8 miles).
- Side return extension in Rhiwbina
- Side return extension in Cardiff
- Side return extension in Caerphilly
- Side return extension in Penarth
- Side return extension in Llantrisant
Other work in Whitchurch:
FAQ
Side return extension questions in Whitchurch
Do you handle building control in Whitchurch?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Is a side return permitted development?
Sometimes, as a side extension within the width and height limits, but not in conservation areas, and many terraces are in one.
What postcode areas do you cover around Whitchurch?
Including CF5, CF14 and CF15, and the surrounding Cardiff and the Vale area.
Is the site visit in Whitchurch free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.