An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Landlords in Barry (CF62 and CF63) usually come to us with a council letter, a fire risk assessment or a house they have just bought. We price from whichever you have.
- Area
- Vale of Glamorgan, Wales
- Postcodes
- CF62 and CF63
- Location
- 7 miles south-west of Cardiff
- Pricing region
- Wales
What do extensions for extra rooms in Barry involve?
- Ensuite drainage and extraction
- Building control completion
- Kitchen or bedroom fit-out
- Foundations, structure and roof
- Heating, insulation and glazing
Which rules apply in Barry?
Extensions for extra rooms in Barry must satisfy national law for Wales, the council’s written HMO standards and, where walls, drainage or fire separation change, the building rules. In short:
- 3–6 sharers is use class C4, and in Wales changing a house to C4 always needs planning permission; only C4 back to C3 is permitted development.
- Building regulations cover structural work, partitions, drainage, fire-resisting construction and electrics; confirm with building control whether the conversion is a material change of use.
- Council HMO standards and the fire risk assessment set detection, fire doors and escape routes.
- Kitchen and bathroom ratios are set in each council’s HMO standards.
How much do extensions for extra rooms cost in Barry?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £32,900 – £56,400 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,700 – £3,750 | m² |
Prices in Barry are shown with our regional adjustment for Wales (below the UK average). Your quote is itemised and fixed in writing once the scope and specification are agreed.
How long does it take?
Typical time on site: 8–14 weeks. We agree the programme with you before starting and send photo updates as the work progresses.
When do Barry landlords need it?
We usually get the call when:
- A kitchen too small for the number of sharers
- Moving to more sharers with consent
Questions about extensions for extra rooms in Barry
Do you handle building control?
Yes, from application to completion certificate.
Do you cover all of Barry?
Yes. We work across Barry and the CF62 and CF63 postcode areas, plus the rest of Vale of Glamorgan. Nearby places we also cover include Penarth, Cardiff, Whitchurch.
Does a shared house in Barry need an HMO licence?
In Wales, mandatory licensing covers HMOs of 3 or more storeys with 5 or more people. Many councils, including Cardiff and Swansea, also run additional licensing for smaller HMOs. Every landlord must register with Rent Smart Wales.
How much do extensions for extra rooms cost in Barry?
Our guide ranges for Wales are in the table on this page, and the guide-price tool gives a figure for your house. A fixed written quote follows a free site visit.
Extensions for extra rooms near Barry
- Penarth · 5 mi
- Cardiff · 7 mi
- Whitchurch · 8 mi
- Llantwit Major · 9 mi
- Llantrisant · 10 mi
- Caerphilly · 12 mi
- All of Vale of Glamorgan