Caerleon, Newport and Monmouthshire
Two-storey rear extension in Caerleon
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Caerleon and want to know what a two-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Caerleon and its postcode districts NP18 are part of our Newport and Monmouthshire coverage. Two-storey rear extensions suit semi-detached houses in Caerleon best, where the extra bedroom matters as much as the bigger kitchen.
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 two-storey rear extension cost in Caerleon?
A two-storey rear extension in Caerleon is priced at £1,670–£2,510 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 × 5 m footprint, two floors (30 m²) | £50,000–£75,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £80,500–£120,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a two-storey rear extension in Caerleon?
Here is how the rules in Wales apply to a two-storey rear extension in Caerleon.
In Wales a rear extension of more than one storey can be permitted development if the ground floor projects no more than 4 metres and the upper floor no more than 3 metres, with at least 10.5 metres to the rear boundary. It is not permitted development in conservation areas, National Parks or National Landscapes, so many double-storey schemes need a householder application.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development or a householder planning application.
What are homes in Caerleon like to extend?
Older terraces near the centre and post-war semis further out are typical of Caerleon. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a two-storey rear extension in Caerleon 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.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Two-storey rear extensions near Caerleon
Neighbouring places we cover include Newport (2.4 miles) and Cwmbran (4.3 miles).
- Two-storey rear extension in Newport
- Two-storey rear extension in Cwmbran
- Two-storey rear extension in Risca
- Two-storey rear extension in Pontypool
- Two-storey rear extension in Abercarn
Other work in Caerleon:
FAQ
Two-storey rear extension questions in Caerleon
Can you match the brick or stone on my Caerleon house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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 two-storey cheaper per square metre than single-storey?
Usually yes, because the foundations and roof are shared across twice the floor area. The total cost is higher.
What postcode areas do you cover around Caerleon?
Including NP18, and the surrounding Newport and Monmouthshire area.
Is the site visit in Caerleon free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do I need a party wall agreement?
In Wales, usually yes if the extension is on or near a shared boundary or close to a neighbour's foundations. We serve the notices.