Covering South Glamorgan
Our coverage across South Glamorgan includes Cardiff, Barry, Penarth and Llantwit Major.
Homes in South Glamorgan
Welsh homes include long terraces built into hillsides, stone cottages and modern estates, and sloping sites often shape how and where an extension can go.
What is a house-to-flat conversion?
We assess the house against the council’s policies on flat sizes, parking, bins and cycle storage before any design work, then design layouts to the space standards your council uses. On site the critical work is fire separation, sound insulation between floors, separate services and meters, and protected escape routes.
- Fire separation and sound insulation between flats
- Separate electrics, heating and metering
- Bin, cycle and amenity space works
What is the guide price for a house-to-flat conversion in South Glamorgan?
Use these ranges to budget for house-to-flat conversions; the survey turns them into a fixed price for the agreed specification.
Priced on survey.
Do you need permission for a house-to-flat conversion in South Glamorgan?
Welsh projects need planning clearance from the council under Welsh rules, building regulations approval under the Welsh approved documents, and party wall notices where the work affects a neighbour’s wall or foundations.
This needs full planning permission from your council in Wales.
What should South Glamorgan homeowners check first?
- Some councils restrict the loss of family houses or limit flat conversions in certain streets.
- Each flat needs its own utilities and metering.
What are the steps?
- Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
- Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
Questions about a house-to-flat conversion in South Glamorgan
Does converting a house into flats need planning permission?
Yes, always. Subdividing a house into flats is development under planning law.
How much does a flat conversion cost?
It varies too much to give a reliable guide figure, so we price each one on survey. The reduced 5% VAT rate can apply where the number of dwellings changes.
Can you visit a house in South Glamorgan to quote?
Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.
Also covering
- House-to-flat conversions in Cardiff
- House-to-flat conversions in Barry
- House-to-flat conversions in Penarth
- House-to-flat conversions in Llantwit Major
- House-to-flat conversions in Whitchurch
- House-to-flat conversions in Cowbridge
Learn more about house-to-flat conversions, or see every project we cover in South Glamorgan.

