Two-storey extensions in Swansea
Everything for a two-storey extension in Swansea, in one place: types, guide prices for Wales, the approval rules in Wales and how to get started.
Swansea at a glance
- Postcode districts
- SA1, SA2, SA3 and SA5
- Area
- Swansea and Neath Port Talbot, Wales
- Price region
- Wales
- Nearest towns
- Clydach (4.7 miles), Briton Ferry (5.4 miles), Gorseinon (5.4 miles), Neath (6.6 miles)
- Approvals
- Two-storey rear: ground floor up to 4 m, first floor up to 3 m and 10.5 m from the rear boundary. Some two-storey side extensions can be permitted development.
We cover postcode districts SA1, SA2, SA3 and SA5 in and around Swansea, along with neighbouring Clydach, Briton Ferry and Gorseinon.
Extensions available in Swansea
Two-storey rear extensions
Design, approvals and build for Swansea homes. Guide from £51,500.
Learn more
Two-storey side extensions
Swansea guide price from £79,000, Standard spec.
Learn more
Two-storey wraparound extensions
For homes in Swansea: typical guide from £111,000.
Learn more
Part single, part two-storey extensions
Guide from £66,000 in Swansea, including VAT.
Learn more
Extensions over a garage
Design, approvals and build for Swansea homes. Guide from £29,000.
Learn more
First-floor extensions
Swansea guide price from £23,000, Standard spec.
Learn more
Two-storey extensions for semi-detached houses
Swansea guide price from £51,500, Standard spec.
Learn more
Two-storey extensions for detached houses
Guide from £79,000 in Swansea, including VAT.
Learn more
Kitchen extensions with bedrooms above
Design, approvals and build for Swansea homes. Guide from £51,500 (before kitchen units).
Learn more
Extra bedroom and en-suite extensions
Our Wales guide starts at £51,500 (plus en-suite) for this type.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
Also available in Swansea and Neath Port Talbot
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Swansea
Swansea is in Wales. Two-storey rear: ground floor up to 4 m, first floor up to 3 m and 10.5 m from the rear boundary. Some two-storey side extensions can be permitted development. Householder planning application: £585. Councils normally decide householder applications within 8 weeks.
The full Wales rules explained
Questions about extensions in Swansea
Do you cover Swansea?
Yes. We cover Swansea (SA1, SA2, SA3 and SA5) and the surrounding area, including Clydach and Briton Ferry. The first site visit is free.
What does a two-storey extension cost in Swansea?
Using our Wales guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £51,500–£69,500 including VAT. An extension over a garage is about £29,000–£42,000.
Which other places near Swansea do you cover?
Everywhere around it, including Clydach (4.7 miles), Briton Ferry (5.4 miles) and Gorseinon (5.4 miles), and the rest of Swansea and Neath Port Talbot.