Abergavenny, Newport and Monmouthshire
Terraced house rear extension in Abergavenny
We plan and build rear extensions for terraced houses for homeowners in Abergavenny. Rear and side return extensions for terraces, with access through the house and two neighbours. Start with a free site visit, then a written price once the design is agreed.
We cover Abergavenny (NP7) as part of our Newport and Monmouthshire work. In Abergavenny we plan the delivery route through the house and the skip licence before anything else.
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 Abergavenny?
For Abergavenny we work from the Wales rate: £1,910–£3,070 per square metre of new floor, including VAT, 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 Abergavenny?
Whether your terraced house rear extension in Abergavenny needs a planning application depends on its size, your house and any local restrictions.
Welsh permitted development allows a single-storey rear extension of up to 4 metres in depth and 4 metres in height, subject to boundary and garden-coverage limits. There is no larger-extension prior approval scheme in Wales.
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 Abergavenny like to extend?
Older terraces near the centre and post-war semis further out are typical of Abergavenny. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a terraced house rear extension in Abergavenny comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Terraced house rear extensions near Abergavenny
From Abergavenny, the nearest places we also cover are Brynmawr (7.2 miles) and Abertillery (8.0 miles).
- Terraced house rear extension in Brynmawr
- Terraced house rear extension in Abertillery
- Terraced house rear extension in Pontypool
- Terraced house rear extension in Ebbw Vale
- Terraced house rear extension in Tredegar
Other work in Abergavenny:
FAQ
Terraced house rear extension questions in Abergavenny
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 the site visit in Abergavenny free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
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 you match the brick or stone on my Abergavenny house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What postcode areas do you cover around Abergavenny?
Including NP7, and the surrounding Newport and Monmouthshire area.