An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. In Amersham, a town of about 22,000 people in Buckinghamshire, the work is planned around the HMO rules for England and the council’s written HMO standards.
- Area
- Buckinghamshire, England
- Postcodes
- HP6 and HP7
- Location
- 21 miles north-east of Reading
- Pricing region
- South East
What do extensions for extra rooms in Amersham involve?
- Planning route check and drawings
- Building control completion
- Fire separation and detection extended to the new space
- Foundations, structure and roof
- Party wall coordination where needed
Which rules apply in Amersham?
Extensions for extra rooms in Amersham must satisfy national law for England, the council’s written HMO standards and, where walls, drainage or fire separation change, the building rules. In short:
- 7 or more sharers is a sui generis large HMO and normally needs planning permission.
- A conversion can be a material change of use under the building regulations, so confirm with building control before work starts.
- Smoke alarms on every storey with living accommodation and CO alarms by fixed combustion appliances (other than gas cookers) are required by law.
- 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 Amersham?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £39,200 – £67,200 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £2,000 – £4,500 | m² |
These are typical ranges including VAT, adjusted for South East, where costs run above the UK average. The fixed price for a house in Amersham follows a site visit.
How long does it take?
Most jobs of this kind take 8–14 weeks. If a council deadline applies in Amersham, tell us at the first call so the programme is built around it.
When do Amersham landlords need it?
Typical reasons for this work in Amersham:
- A kitchen too small for the number of sharers
- Adding a ground-floor room
Questions about extensions for extra rooms in Amersham
Can I extend an HMO under permitted development?
Some extensions to houses are permitted development, but rules differ for HMOs and by nation and council. We check the address before design.
Do you cover all of Amersham?
Yes. We work across Amersham and the HP6 and HP7 postcode areas, plus the rest of Buckinghamshire. Nearby places we also cover include Chesham, Chalfont Saint Peter, Gerrards Cross.
Does a shared house in Amersham need an HMO licence?
In England, a mandatory licence is needed for 5 or more people from 2 or more households. Smaller HMOs can need a licence where the council runs additional licensing, which is common in towns with many shared houses. Check the council’s website for the address.
How much do extensions for extra rooms cost in Amersham?
Our guide ranges for South East 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 Amersham
- Chesham · 2 mi
- Chalfont Saint Peter · 5 mi
- Gerrards Cross · 6 mi
- High Wycombe · 6 mi
- Rickmansworth · 6 mi
- Berkhamsted · 7 mi
- All of Buckinghamshire
Other HMO services in Amersham
- Loft conversions for extra rooms in Amersham
- Communal kitchen refits in Amersham
- Layout changes and room reconfiguration in Amersham
- Large HMO conversions (7+ sharers) in Amersham
- Ensuite installation in Amersham
- House to HMO conversion in Amersham
- Bedroom upgrades and room refits in Amersham
- Fire alarm and detection systems in Amersham