An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. For a house in Colwyn Bay we start with a measured survey, check the council’s written HMO standards for the number of sharers, and then price each item separately.
- Area
- Conwy, Wales
- Postcodes
- LL28 and LL29
- Location
- 35 miles north-west of Wrexham
- Pricing region
- Wales
What do extensions for extra rooms in Colwyn Bay involve?
- Ensuite drainage and extraction
- Party wall coordination where needed
- Heating, insulation and glazing
- Planning route check and drawings
- Kitchen or bedroom fit-out
Which rules apply in Colwyn Bay?
Extensions for extra rooms in Colwyn Bay 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:
- 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.
- Fitness for human habitation rules require mains-powered, interlinked smoke alarms on every storey and CO alarms where there is a gas, oil or solid-fuel appliance.
- Kitchen and bathroom ratios are set in each council’s HMO standards.
How much do extensions for extra rooms cost in Colwyn Bay?
| 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 |
These are typical ranges including VAT, adjusted for Wales, where costs run below the UK average. The fixed price for a house in Colwyn Bay follows a site visit.
How long does it take?
Most jobs of this kind take 8–14 weeks. If a council deadline applies in Colwyn Bay, tell us at the first call so the programme is built around it.
When do Colwyn Bay landlords need it?
We usually get the call when:
- A kitchen too small for the number of sharers
- Adding a ground-floor room
Questions about extensions for extra rooms in Colwyn Bay
Will the extension affect neighbours?
Possibly, if it is on or near a boundary. Party wall procedures may apply in England and Wales.
Do you cover all of Colwyn Bay?
Yes. We work across Colwyn Bay and the LL28 and LL29 postcode areas, plus the rest of Conwy. Nearby places we also cover include Llandudno, Rhyl, Prestatyn.
Does a shared house in Colwyn Bay 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 Colwyn Bay?
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 Colwyn Bay
- Llandudno · 5 mi
- Rhyl · 10 mi
- Prestatyn · 13 mi
- Bangor (Gwynedd) · 17 mi
- Flint · 25 mi
- Heswall · 26 mi
- All of Conwy
Other HMO services in Colwyn Bay
- Loft conversions for extra rooms in Colwyn Bay
- Communal kitchen refits in Colwyn Bay
- Layout changes and room reconfiguration in Colwyn Bay
- Large HMO conversions (7+ sharers) in Colwyn Bay
- Ensuite installation in Colwyn Bay
- House to HMO conversion in Colwyn Bay
- Student HMO refurbishment in Colwyn Bay
- EPC and energy upgrades in Colwyn Bay