Whitchurch, Cardiff and the Vale
Terraced house rear extension in Whitchurch
Rear and side return extensions for terraces, with access through the house and two neighbours. We design, get the approvals for and build rear extensions for terraced houses in Whitchurch and the surrounding area, with one contract from the first survey to building control sign-off.
Whitchurch sits in Cardiff and the Vale, with postcode districts including CF5, CF14 and CF15. Terraced streets make up much of the housing in parts of Cardiff and the Vale, and most rear extensions here go in without side access.
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 terraced house rear extension cost in Whitchurch?
In Whitchurch, our guide for a terraced house rear extension is £1,910–£3,070 per square metre including VAT for a standard specification. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £25,500–£41,500 |
| 3 m wide × 6 m deep (18 m²) | £34,500–£55,000 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a terraced house rear extension in Whitchurch?
The planning route for a terraced house rear extension in Whitchurch is set by Wales's householder rules and your council.
In Wales a single-storey rear extension can often be permitted development if it projects no more than 4 metres beyond the rear wall and is no more than 4 metres high. Wales has no prior approval route for deeper extensions, so anything bigger needs a householder planning application.
The Party Wall etc. Act 1996 also applies in Wales: two months' notice for work to a shared wall and one month for foundations dug close to a neighbour's building.
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?
Older terraces near the centre and post-war semis further out are typical of Whitchurch. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a terraced house rear extension in Whitchurch comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Terraced house rear extensions near Whitchurch
Neighbouring places we cover include Rhiwbina (1.2 miles) and Cardiff (2.8 miles).
- Terraced house rear extension in Rhiwbina
- Terraced house rear extension in Cardiff
- Terraced house rear extension in Caerphilly
- Terraced house rear extension in Penarth
- Terraced house rear extension in Llantrisant
Other work in Whitchurch:
FAQ
Terraced house rear extension questions in Whitchurch
What postcode areas do you cover around Whitchurch?
Including CF5, CF14 and CF15, and the surrounding Cardiff and the Vale area.
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 you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
Can you match the brick or stone on my Whitchurch house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
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.