Two-storey extensions in Tumble
We design, get approval for and build two-storey extensions in Tumble and the surrounding area. Choose the type of extension below or book a free site visit.
Tumble at a glance
- Postcode districts
- SA14
- Area
- Dyfed, Wales
- Price region
- Wales
- Nearest towns
- Cross Hands (1.2 miles), Ammanford (5.2 miles), Pontarddulais (5.7 miles), Llanelli (7.4 miles)
- Distance to Llanelli
- about 7.4 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.
Tumble sits about 7.4 miles from Llanelli. Closer to home, Cross Hands is 1.2 miles away and Ammanford 5.2 miles.
Extensions available in Tumble

Two-storey rear extensions
Tumble guide price from £51,500, Standard spec.
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Two-storey side extensions
From £79,000 in Tumble. Free visit to firm it up.
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Two-storey wraparound extensions
Our Wales guide starts at £111,000 for this type.
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Part single, part two-storey extensions
Tumble guide price from £66,000, Standard spec.
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Extensions over a garage
From £29,000 in Tumble. Free visit to firm it up.
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First-floor extensions
For homes in Tumble: typical guide from £23,000.
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Two-storey extensions for semi-detached houses
From £51,500 in Tumble. Free visit to firm it up.
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Two-storey extensions for detached houses
Design, approvals and build for Tumble homes. Guide from £79,000.
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Kitchen extensions with bedrooms above
From £51,500 (before kitchen units) in Tumble. Free visit to firm it up.
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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?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Tumble we also design annexes, home offices and bedrooms over garages.
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 Tumble
Tumble 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 Tumble
Do you cover Tumble?
Yes. We cover Tumble (SA14) and the surrounding area, including Cross Hands and Ammanford. The first site visit is free.
What does a two-storey extension cost in Tumble?
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 Tumble do you cover?
Everywhere around it, including Cross Hands (1.2 miles), Ammanford (5.2 miles) and Pontarddulais (5.7 miles), and the rest of Dyfed.