An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. In Gelligaer, a town of about 17,000 people in Caerphilly, the work is planned around the HMO rules for Wales and the council’s written HMO standards.
- Area
- Caerphilly, Wales
- Postcodes
- CF82
- Location
- 13 miles north of Cardiff
- Pricing region
- Wales
What do extensions for extra rooms in Gelligaer involve?
- Building control completion
- Fire separation and detection extended to the new space
- Ensuite drainage and extraction
- Planning route check and drawings
- Heating, insulation and glazing
Which rules apply in Gelligaer?
Here is what usually applies to a Gelligaer job of this kind. It is general information rather than legal advice, and the council’s written HMO standards have the final detail.
- More than 6 sharers is a sui generis HMO and needs planning permission; councils such as Cardiff apply concentration limits.
- 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 Gelligaer?
| 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 |
Use these as a starting point for budgeting. Access, condition and the council’s requirements in Gelligaer can move the figure either way, which is why we quote after seeing the house.
How long does it take?
Allow 8–14 weeks on site for a typical job. Drawings, approvals and long-lead items such as kitchens or fire door sets are booked before we start.
When do Gelligaer landlords need it?
We usually get the call when:
- Moving to more sharers with consent
- Adding a ground-floor room
Questions about extensions for extra rooms in Gelligaer
Is a kitchen extension worth it?
Often, when the existing kitchen limits how many people the council will allow. A bigger kitchen can unlock an extra room.
Do you cover all of Gelligaer?
Yes. We work across Gelligaer and the CF82 postcode areas, plus the rest of Caerphilly. Nearby places we also cover include Nelson (Caerphilly), Bargoed, Blackwood.
Does a shared house in Gelligaer 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 Gelligaer?
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 Gelligaer
- Nelson (Caerphilly) · 1 mi
- Bargoed · 2 mi
- Blackwood · 2 mi
- Treharris · 2 mi
- Pontypridd · 6 mi
- Caerphilly · 6 mi
- All of Caerphilly
Other HMO services in Gelligaer
- Loft conversions for extra rooms in Gelligaer
- Communal kitchen refits in Gelligaer
- Layout changes and room reconfiguration in Gelligaer
- Large HMO conversions (7+ sharers) in Gelligaer
- Ensuite installation in Gelligaer
- House to HMO conversion in Gelligaer
- Sound insulation in Gelligaer
- Bedroom upgrades and room refits in Gelligaer