Two-storey extensions in Brynna
Need more room in Brynna? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Brynna at a glance
- Postcode districts
- CF35
- Area
- Mid Glamorgan, Wales
- Price region
- Wales
- Nearest towns
- Llanharan (1.1 miles), Pencoed (1.9 miles), Pontyclun (3.3 miles), Tonyrefail (3.5 miles)
- Distance to Rhondda
- about 8.4 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.
We cover Brynna (CF35) and the places around it, including Llanharan (1.1 miles), Pencoed (1.9 miles) and Pontyclun.
Extensions available in Brynna

Two-storey rear extensions
Guide from £51,500 in Brynna, including VAT.
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Two-storey side extensions
Guide from £79,000 in Brynna, including VAT.
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Two-storey wraparound extensions
For homes in Brynna: typical guide from £111,000.
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Part single, part two-storey extensions
For homes in Brynna: typical guide from £66,000.
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Extensions over a garage
From £29,000 in Brynna. Free visit to firm it up.
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First-floor extensions
From £23,000 in Brynna. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
From £51,500 in Brynna. Free visit to firm it up.
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Two-storey extensions for detached houses
Brynna guide price from £79,000, Standard spec.
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Kitchen extensions with bedrooms above
Brynna guide price from £51,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
For homes in Brynna: typical guide from £51,500 (plus en-suite).
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 Mid Glamorgan
- 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 Brynna
Brynna 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 Brynna
Do you cover Brynna?
Yes. We cover Brynna (CF35) and the surrounding area, including Llanharan and Pencoed. The first site visit is free.
What does a two-storey extension cost in Brynna?
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 Brynna do you cover?
Everywhere around it, including Llanharan (1.1 miles), Pencoed (1.9 miles) and Pontyclun (3.3 miles), and the rest of Mid Glamorgan.