House to HMO conversion across Hampshire

In short: 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. In Hampshire we survey first, price each item separately and hand over the certificates and photos a council asks for.

Nation: England
Pricing region: South East
Postcode areas: SO, RG, GU, SP
Main towns: Southampton, Portsmouth, Basingstoke, Gosport, Waterlooville

What does house to HMO conversion in Hampshire involve?

A communal kitchen sized for the number of sharers
Rewiring or upgrades, with an electrical certificate
Measured survey and room-size check against the licensing standards
Decoration, flooring and a handover pack for licensing
New stud walls, door openings and room splits
Extra bathrooms, shower rooms or ensuites

Which rules apply in Hampshire?

Licences last up to 5 years and carry conditions on gas and electrical safety, alarms, room sizes and waste.
Licensed HMOs must meet national minimum bedroom sizes: 6.51 m² for one person aged 10 or over, 10.22 m² for two, and 4.64 m² for a child under 10.
Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
7 or more sharers is a sui generis large HMO and normally needs planning permission.
Building regulations cover structural changes, new partitions, ensuite drainage, fire-resisting construction and notifiable electrical work.

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 does house to HMO conversion cost in Hampshire?

Regional adjustment for South East. Planning budgets: see our prices page.
Item	UK typical	Local guide	Per
Typical 3–4 bed house to a 5–6 bed HMO, all-in	£30,000 – £75,000	£33,600 – £84,000	project
Conversion works per letting room (walls, linings, electrics, decoration; excludes kitchens, bathrooms and fire systems; our estimate)	£3,500 – £6,500	£3,900 – £7,300	letting room
Ensuite shower room added to a bedroom	£4,000 – £10,000	£4,500 – £11,200	ensuite
Communal HMO kitchen with extra cooking and sink capacity (our estimate from domestic ranges)	£8,000 – £18,000	£8,950 – £20,150	kitchen
Interlinked mains alarm system (Grade D type), small HMO (our estimate from installer guides)	£800 – £2,000	£900 – £2,250	house

Typical time on site: 6–14 weeks. For a figure for your house, try the guide-price tool.

House to HMO conversion by town in Hampshire

Questions about house to HMO conversion in Hampshire

Can you work to a council’s HMO standards document?

Yes. Councils publish their own amenity and space standards. We read the one for your address and work to it, including kitchen and bathroom ratios.

How long does a house to HMO conversion take?

Most conversions of a three or four-bedroom house take six to fourteen weeks on site, after drawings and any approvals. Bigger layout changes, extensions or loft rooms add time.

Do you carry out house to HMO conversion across Hampshire?

Yes, across the whole of Hampshire, including Southampton, Portsmouth, Basingstoke.

Who licenses HMOs in Hampshire?

HMOs in Hampshire are licensed by the local council for the address. Where an area has several councils, each runs its own licensing and planning policies.