An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. St Austell is 28 miles west of Plymouth. We price extensions for extra rooms there against England’s HMO rules and the council’s written HMO standards, so work is planned to the standard an inspection looks for.
- Area
- Cornwall, England
- Postcodes
- PL25
- Location
- 28 miles west of Plymouth
- Pricing region
- South West
What do extensions for extra rooms in St Austell involve?
- Planning route check and drawings
- Fire separation and detection extended to the new space
- Building control completion
- Ensuite drainage and extraction
- Kitchen or bedroom fit-out
Which rules apply in St Austell?
The rules below are the England-wide position for this kind of work. Councils add their own standards and schemes on top, so we always check the address in St Austell before we price.
- 3–6 unrelated sharers is use class C4; changing from a family house is usually permitted development unless an Article 4 direction applies.
- Building regulations cover structural changes, new partitions, ensuite drainage, fire-resisting construction and notifiable electrical work.
- Fire precautions follow a risk assessment; the LACORS Housing – Fire Safety guide (2008) is guidance, not law, but many councils base their standards on it.
- National rules ask for an adequate number of bathrooms, WCs and basins and suitably located kitchens; numeric ratios are set by each council.
How much do extensions for extra rooms cost in St Austell?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £36,400 – £62,400 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,850 – £4,150 | m² |
Use these as a starting point for budgeting. Access, condition and the council’s requirements in St Austell can move the figure either way, which is why we quote after seeing the house.
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 St Austell landlords need it?
Typical reasons for this work in St Austell:
- Moving to more sharers with consent
- A kitchen too small for the number of sharers
Questions about extensions for extra rooms in St Austell
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 St Austell?
Yes. We work across St Austell and the PL25 postcode areas, plus the rest of Cornwall. Nearby places we also cover include Truro, Newquay, Falmouth.
Where do I check the HMO rules for an address in St Austell?
With the local council for the address. Councils in England can add additional licensing and Article 4 directions on top of the national rules. Check the council’s website for the exact address before you buy or start work.
How much do extensions for extra rooms cost in St Austell?
Our guide ranges for South West 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 St Austell
- Truro · 13 mi
- Newquay · 14 mi
- Falmouth · 18 mi
- Redruth · 21 mi
- Camborne · 25 mi
- Plymouth · 28 mi
- All of Cornwall
Other HMO services in St Austell
- Loft conversions for extra rooms in St Austell
- Communal kitchen refits in St Austell
- Layout changes and room reconfiguration in St Austell
- Large HMO conversions (7+ sharers) in St Austell
- Ensuite installation in St Austell
- House to HMO conversion in St Austell
- EPC and energy upgrades in St Austell
- Escape routes, emergency lighting and fire stopping in St Austell