Monmouth, Newport and Monmouthshire
Wraparound extension in Monmouth
We plan and build wraparound extensions for homeowners in Monmouth. An L-shaped extension that fills the side return and runs across the back. Start with a free site visit, then a written price once the design is agreed.
Monmouth sits in Newport and Monmouthshire, with postcode districts including NP25. Wraparound projects around Monmouth often involve two neighbours, so we start the party wall conversations early.
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 wraparound extension cost in Monmouth?
A wraparound extension in Monmouth is priced at £2,050–£3,350 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 |
|---|---|
| L-shaped, about 22 m² of new floor | £45,000–£73,500 |
| L-shaped, about 30 m² of new floor | £61,500–£100,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a wraparound extension in Monmouth?
Here is how the rules in Wales apply to a wraparound extension in Monmouth.
In Wales a single-storey side extension can be permitted development if it is no more than 4 metres high and the house ends up no more than 50% wider than the original. Many side return infills on terraced streets, and most wraparounds, go through a householder 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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Monmouth like to extend?
Older terraces near the centre and post-war semis further out are typical of Monmouth. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a wraparound extension in Monmouth 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.
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.
Wraparound extensions near Monmouth
From Monmouth, the nearest places we also cover are Cinderford (9.2 miles) and Ross on Wye (9.5 miles).
- Wraparound extension in Cinderford
- Wraparound extension in Ross on Wye
- Wraparound extension in Chepstow
- Wraparound extension in Abergavenny
- Wraparound extension in Caldicot
Other work in Monmouth:
FAQ
Wraparound extension questions in Monmouth
How long does a rear extension take to build in Monmouth?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
How much does a wraparound extension cost in Monmouth?
As a guide, £2,050–£3,350 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £45,000–£73,500 at that rate. Your written price follows the survey.
Does a wraparound need planning permission?
Often yes, because the side and rear parts are judged together. Some fit within permitted development; we check before drawing.
Is the site visit in Monmouth 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.
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.