Before purchasing, letting, or managing a potential House in Multiple Occupation (HMO), conducting a thorough “HMO Check” is a non-negotiable due diligence exercise. This process verifies the legal status of the property across multiple regulatory domains. Failure to do so can result in severe financial penalties, criminal liability, and an investment that is impossible to operate legally. This guide provides a structured, step-by-step framework to ensure full compliance.
The Four Pillars of a Complete HMO Check
A comprehensive check must investigate four critical areas: Planning Permission, Licensing, Physical Compliance, and Financial Viability.
Pillar 1: Planning Permission Check – Is the Use Lawful?
The first question is whether the property has the correct planning use for an HMO. The rules differ across the UK.
- In England:
- Identify the Use Class: Determine if the HMO will house 3-6 people (Class C4) or 7+ people (Sui Generis).
- Check for an Article 4 Direction: Contact the local planning department or search their website. Ask: “Is there an Article 4 Direction in force at this property’s address that removes permitted development rights for a change of use from C3 to C4?”
- Outcome:
- No Article 4 & HMO for 3-6 people: Permitted Development rights apply. No planning application needed.
- Article 4 in force & HMO for 3-6 people: Full planning permission is required.
- HMO for 7+ people (anywhere): Always requires full planning permission.
- In Wales and Northern Ireland: The change from a single dwelling to an HMO for 3 or more people typically requires planning permission. Always verify with the local planning authority.
Action: Obtain written confirmation from the local planning authority regarding the property’s lawful use and any planning permissions or Article 4 Directions.
Pillar 2: Licensing Check – Is the Property Correctly Licensed?
This is a two-part check: verifying the licence status and understanding the local scheme.
- Check the Public Register: Every local council must maintain a public register of licensed HMOs.
- Go to the relevant council’s website.
- Search for “HMO register” or “property licensing.”
- Search for the property by address. If it is listed, verify the licence is current and note the number of permitted occupants.
- Confirm the Local Licensing Scheme: Contact the council’s Housing Standards or HMO Licensing team to confirm:
- Does the property fall under a Mandatory (5+ persons), Additional (3-4 persons), or Selective (all rentals) licensing scheme?
- What are the specific licence conditions?
Action: If the property requires a licence but is unlicensed, do not proceed until the current owner has secured it. If you are the landlord, apply immediately.
Pillar 3: Physical Compliance Check – Does the Property Meet Legal Standards?
A licensed HMO must meet stringent physical standards. This check often requires a professional survey.
- Minimum Room Sizes:
- A room for one person over 10 years: ≥ 6.51 sqm
- A room for two people over 10 years: ≥ 10.22 sqm
- Amenity Standards: Check for adequate shared facilities. A common requirement is one bathroom for every five occupants.
- Fire Safety: This is paramount. Check for:
- Mains-wired, interlinked smoke and heat alarms.
- Fire-resistant doors on all habitable rooms and the kitchen.
- Clear, unobstructed fire escape routes.
- Gas and Electrical Safety:
- A valid Gas Safety Certificate (renewed annually).
- A valid Electrical Installation Condition Report (EICR) (renewed at least every 5 years).
Action: Engage a qualified surveyor or HMO specialist to conduct an audit against the council’s licensing conditions. Obtain all current safety certificates.
Pillar 4: Financial Viability Check – Is the Investment Sound?
Legal compliance has a cost. The financial model must account for this.
- Setup Costs: Licensing fees, planning application fees, fire safety upgrades, furniture.
- Ongoing Costs: Licence renewal, annual gas safety checks, five-yearly EICR, higher utility bills, more frequent maintenance.
- Yield Calculation:
\text{Gross Yield} = \frac{\text{Total Annual Rent}}{\text{Total Investment (Purchase + Setup)}} \times 100
Compare this to the yield of a standard single let to see if the premium justifies the extra work and cost.
The HMO Due Diligence Checklist
Use this checklist before committing to an HMO:
- [ ] Planning: Confirmed with the local authority that the HMO use is lawful (via Permitted Development or granted Planning Permission).
- [ ] Licensing: Property found on the council’s HMO public register OR a licence application is in process.
- [ ] Room Sizes: All bedrooms measured and meet minimum legal standards.
- [ ] Fire Safety: Professional audit confirms compliant alarm systems, fire doors, and clear escape routes.
- [ ] Gas & Electrical: Current Gas Safety Certificate and EICR obtained and reviewed.
- [ ] Finances: A detailed financial model has been created, incorporating all setup and ongoing compliance costs.
Conclusion: From Check to Compliance
An HMO check is not a single event but the foundation of a compliant and profitable investment. It transforms uncertainty into a clear, actionable plan. By systematically verifying planning, licensing, physical, and financial status, you protect yourself from catastrophic liabilities and build a sustainable rental business. The golden rule is simple: if any part of the check fails, resolve it before proceeding. In the world of HMOs, thorough due diligence is the most valuable investment you can make.
