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 Bexley 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
- Greater London, England
- Postcodes
- DA1, DA5, DA6 and DA15
- Location
- 13 miles east of London
- Pricing region
- London
What do extensions for extra rooms in Bexley involve?
- Party wall coordination where needed
- Foundations, structure and roof
- Fire separation and detection extended to the new space
- Ensuite drainage and extraction
- Building control completion
Which rules apply in Bexley?
Extensions for extra rooms in Bexley 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:
- 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 Bexley?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £44,800 – £76,800 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £2,300 – £5,100 | m² |
Prices in Bexley are shown with our regional adjustment for London (above the UK average). Your quote is itemised and fixed in writing once the scope and specification are agreed.
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 Bexley landlords need it?
We usually get the call when:
- Moving to more sharers with consent
- A kitchen too small for the number of sharers
Questions about extensions for extra rooms in Bexley
Do you handle building control?
Yes, from application to completion certificate.
How far do you travel from Bexley?
We cover the whole of Greater London and work UK-wide. For Bexley the nearest towns on our list are Welling (2 miles), Dartford (3 miles), Swanley (3 miles).
Does a shared house in Bexley 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 Bexley?
Our guide ranges for London 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 Bexley
- Welling · 2 mi
- Dartford · 3 mi
- Swanley · 3 mi
- Eltham · 4 mi
- Thamesmead · 4 mi
- Blackheath · 6 mi
- All of Greater London
Other HMO services in Bexley
- Loft conversions for extra rooms in Bexley
- Communal kitchen refits in Bexley
- Layout changes and room reconfiguration in Bexley
- Large HMO conversions (7+ sharers) in Bexley
- Ensuite installation in Bexley
- House to HMO conversion in Bexley
- Shared bathroom and shower room refits in Bexley
- HMO fire safety upgrades in Bexley