Mid Wales
Pitched and lean-to roof rear extensions in Mid Wales
Lean-to, gable and hipped roofs that give a vaulted ceiling. Across Mid Wales we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Newtown, Brecon and Welshpool.

Pitched roofs suit the cottages and slate-roofed houses in parts of Mid Wales. Older terraces near the centre and post-war semis further out are typical of Mid Wales. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How much does a pitched-roof rear extension cost in Mid Wales?
A pitched-roof rear extension in Mid Wales is priced at £1,860–£3,020 per square metre including VAT as a guide, before kitchen fit-out and fees. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £22,500–£36,500 |
| 4 m wide × 5 m deep (20 m²) | £37,000–£60,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission in Mid Wales?
The Welsh Government's householder rules let many homes add a single-storey rear extension up to 4 metres deep and 4 metres high without a planning application. Deeper projects go through a householder application, because Wales has no prior approval route.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent.
Where in Mid Wales do we work?
FAQ
Questions people ask
Will a lean-to fit under my windows?
We check the sill heights at the survey; low windows usually mean a flat roof instead.
Are roof windows allowed?
Yes; they are the usual way to bring light into a pitched-roof extension.
Is a pitched roof more expensive?
Slightly, typically a few per cent more than a flat roof of the same area.
Do you cover all of Mid Wales?
We cover 4 towns and districts in Mid Wales, including Newtown, Brecon and Welshpool.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.