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HMOs can deliver higher yields than standard buy-to-let, but only if the numbers work. Here is how to analyse an HMO investment properly.
A House in Multiple Occupation is a property rented to three or more tenants who form two or more separate households and share facilities like a kitchen or bathroom. The definition triggers regulation that does not apply to standard rental properties.
Instead of one tenant paying one rent, you have multiple tenants each paying individual room rents. A four-bedroom house achieving £1,200/month as a whole-property let could generate £500-£650 per room as an HMO -- £2,000 to £2,600 per month from the same building. There is also income diversification: one tenant leaving means losing a fraction of income, not all of it.
Mandatory licensing applies to all HMOs with five or more tenants from two or more households. You must obtain a licence with conditions around room sizes (minimum 6.51 sqm single, 10.22 sqm double), fire safety, and management. Additional licensing varies by council -- some licence all HMOs, others have no additional scheme. Fees typically range £500-£1,500 for up to five years.
HMO investment analysis must be done room by room. Double rooms with ensuite command a 30-50% premium over singles with shared facilities.
Management fees: 10-15% of gross rent, compared to 8-10% for standard lets.
Fire safety: £2,000-£5,000 for initial compliance (fire doors, alarms, emergency lighting).
Void rates: Individual rooms turn over more frequently. Budget 8-12% voids.
Utilities: If bills are included (common for HMOs), gas, electric, water, and broadband eat into margin.
The Shared Accommodation Rate (SAR) applies to single tenants under 35 in shared housing -- typically the lowest LHA rate. This sets a ceiling on what benefit-dependent tenants can afford. If your investment case relies on these tenants, know the local SAR before committing.
Converting a dwelling (C3) to a small HMO (C4, up to 6 occupants) is technically permitted development. However, many councils have Article 4 Directions removing this right -- particularly in university towns. For larger HMOs (7+ occupants), the use is sui generis and always requires planning permission.
UrbanCode's Analyst Agent runs comprehensive HMO analysis for any postcode. Provide a postcode and room count, and it pulls room-level rental rates by type (double ensuite, double shared, single ensuite, single shared), LHA caps including SAR, nearby licensed HMOs for competition analysis, and projected gross income.
Instead of a day of research per property, you get a structured investment assessment in seconds.
Try this yourself at urbancode.ai
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