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 Eltham 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
- SE9
- Location
- 9 miles south-east of London
- Pricing region
- London
What do extensions for extra rooms in Eltham involve?
- Ensuite drainage and extraction
- Party wall coordination where needed
- Kitchen or bedroom fit-out
- Foundations, structure and roof
- Planning route check and drawings
Which rules apply in Eltham?
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 Eltham before we price.
- 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.
- The Fire Safety Order 2005 applies to the common parts of HMOs, enforced by the fire and rescue authority.
- 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 Eltham?
| 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 |
These are typical ranges including VAT, adjusted for London, where costs run above the UK average. The fixed price for a house in Eltham follows a site visit.
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 Eltham landlords need it?
Landlords in Eltham most often ask us for this when:
- Adding a ground-floor room
- A kitchen too small for the number of sharers
Questions about extensions for extra rooms in Eltham
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.
Which postcodes in Eltham do you work in?
All of them, including SE9, and the surrounding parts of Greater London.
Does a shared house in Eltham 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 Eltham?
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 Eltham
- Blackheath · 2 mi
- Welling · 3 mi
- Catford · 3 mi
- Greenwich · 3 mi
- Bexley · 4 mi
- Beckenham · 4 mi
- All of Greater London
Other HMO services in Eltham
- Loft conversions for extra rooms in Eltham
- Communal kitchen refits in Eltham
- Layout changes and room reconfiguration in Eltham
- Large HMO conversions (7+ sharers) in Eltham
- Ensuite installation in Eltham
- House to HMO conversion in Eltham
- HMO fire safety upgrades in Eltham
- Student HMO refurbishment in Eltham