A house to HMO conversion turns a single-family home into a house in multiple occupation: a shared home for unrelated people with private bedrooms and shared kitchen or bathroom space. For a house in Wallington 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
- SM5 and SM6
- Location
- 10 miles south of London
- Pricing region
- London
What does house to HMO conversion in Wallington involve?
- Measured survey and room-size check against the licensing standards
- Rewiring or upgrades, with an electrical certificate
- New stud walls, door openings and room splits
- Fire doors, fire-rated linings and an interlinked fire alarm
- A communal kitchen sized for the number of sharers
Which rules apply in Wallington?
House to HMO conversion in Wallington 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:
- Mandatory HMO licence for 5 or more people in 2 or more households (since October 2018); councils can add additional licensing for smaller HMOs.
- Floor area under a ceiling lower than 1.5 m does not count towards the room size, and many councils set larger sizes.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
- 3–6 unrelated sharers is use class C4; changing from a family house is usually permitted development unless an Article 4 direction applies.
How much does house to HMO conversion cost in Wallington?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Typical 3–4 bed house to a 5–6 bed HMO, all-in | £30,000 – £75,000 | £38,400 – £96,000 | project |
| Conversion works per letting room (walls, linings, electrics, decoration; excludes kitchens, bathrooms and fire systems; our estimate) | £3,500 – £6,500 | £4,500 – £8,300 | letting room |
| Ensuite shower room added to a bedroom | £4,000 – £10,000 | £5,100 – £12,800 | ensuite |
| Communal HMO kitchen with extra cooking and sink capacity (our estimate from domestic ranges) | £8,000 – £18,000 | £10,250 – £23,050 | kitchen |
| Interlinked mains alarm system (Grade D type), small HMO (our estimate from installer guides) | £800 – £2,000 | £1,000 – £2,550 | house |
These are typical ranges including VAT, adjusted for London, where costs run above the UK average. The fixed price for a house in Wallington follows a site visit.
How long does it take?
Allow 6–14 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 Wallington landlords need it?
We usually get the call when:
- You have bought, or are buying, a house to let to sharers
- A family let is moving to room-by-room letting
Questions about house to HMO conversion in Wallington
Do I need planning permission to turn a house into an HMO?
It depends on the nation, the council and the number of sharers. In England, three to six unrelated sharers is use class C4, and moving from a family house is usually permitted development unless the council has an Article 4 direction; seven or more normally needs permission. In Wales a change to an HMO always needs permission, in Northern Ireland all new HMOs need it, and in Scotland council policy decides. We check the address before drawings start.
Which postcodes in Wallington do you work in?
All of them, including SM5 and SM6, and the surrounding parts of Greater London.
Does a shared house in Wallington 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 does house to HMO conversion cost in Wallington?
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.
House to HMO conversion near Wallington
- Carshalton · 1 mi
- Sutton · 2 mi
- South Croydon · 3 mi
- Purley · 3 mi
- Croydon · 3 mi
- Mitcham · 3 mi
- All of Greater London
Other HMO services in Wallington
- Small HMO conversions (3–6 sharers) in Wallington
- Large HMO conversions (7+ sharers) in Wallington
- HMO fire safety upgrades in Wallington
- Ensuite installation in Wallington
- Communal kitchen refits in Wallington
- Layout changes and room reconfiguration in Wallington
- Licence condition and schedule-of-works in Wallington
- Loft conversions for extra rooms in Wallington