Two-storey extensions in Tenby
Everything for a two-storey extension in Tenby, in one place: types, guide prices for Wales, the approval rules in Wales and how to get started.
Tenby at a glance
- Postcode districts
- SA70
- Area
- Dyfed, Wales
- Price region
- Wales
- Nearest towns
- Saundersfoot (2.5 miles), Pembroke (8.9 miles), Pembroke Dock (10.2 miles), Neyland (10.9 miles)
- Distance to Llanelli
- about 23.3 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 district SA70 in and around Tenby, along with neighbouring Saundersfoot, Pembroke and Pembroke Dock.
Extensions available in Tenby

Two-storey rear extensions
From £51,500 in Tenby. Free visit to firm it up.
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Two-storey side extensions
Guide from £79,000 in Tenby, including VAT.
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Two-storey wraparound extensions
Design, approvals and build for Tenby homes. Guide from £111,000.
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Part single, part two-storey extensions
Our Wales guide starts at £66,000 for this type.
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Extensions over a garage
Guide from £29,000 in Tenby, including VAT.
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First-floor extensions
Design, approvals and build for Tenby homes. Guide from £23,000.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Tenby homes. Guide from £51,500.
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Two-storey extensions for detached houses
Our Wales guide starts at £79,000 for this type.
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Kitchen extensions with bedrooms above
Our Wales guide starts at £51,500 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
From £51,500 (plus en-suite) in Tenby. Free visit to firm it up.
Learn moreWhich type suits your house?
Which type suits your house in Tenby depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Dyfed
- 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 Tenby
Tenby 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 Tenby
Do you cover Tenby?
Yes. We cover Tenby (SA70) and the surrounding area, including Saundersfoot and Pembroke. The first site visit is free.
What does a two-storey extension cost in Tenby?
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 Tenby do you cover?
Everywhere around it, including Saundersfoot (2.5 miles), Pembroke (8.9 miles) and Pembroke Dock (10.2 miles), and the rest of Dyfed.