Newport and Monmouthshire
Rear extensions for bungalows in Newport and Monmouthshire
Single-storey rear extensions that keep everything on one level. Across Newport and Monmouthshire we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Newport, Abergavenny and Chepstow.

For bungalows in Newport and Monmouthshire, a rear extension is the usual way to add space without adding stairs. Older terraces near the centre and post-war semis further out are typical of Newport and Monmouthshire. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How much does a bungalow rear extension cost in Newport and Monmouthshire?
In Newport and Monmouthshire, our guide for a bungalow rear extension is £1,720–£2,790 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 m deep (12 m²) | £20,500–£33,500 |
| 4 m wide × 6 m deep (24 m²) | £41,500–£67,000 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission in Newport and Monmouthshire?
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 Newport and Monmouthshire do we work?
FAQ
Questions people ask
Can a bungalow extension be fully accessible?
Yes: level thresholds, wider doors and a wet room are straightforward to design in.
Will the roof look odd?
Not if the pitch and tiles match. Where the eaves are low, a flat-roofed section with a lantern is an alternative.
Can I extend the loft as well?
Sometimes, but that is a different project; a rear extension keeps everything on one level.
Do you cover all of Newport and Monmouthshire?
We cover 6 towns and districts in Newport and Monmouthshire, including Newport, Abergavenny and Chepstow.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.