Find Every Unlicensed HMO in Your Borough
Thousands of unlicensed HMOs operate undetected across England. Manual detection is impossible with small teams. Automated cross-referencing finds them in hours, not years.
The Hidden HMO Problem
Government estimates suggest there are over 500,000 HMOs in England, but only a fraction hold the correct licence. In many boroughs, 30% to 50% of HMOs operate without mandatory licensing.
Unlicensed HMOs are disproportionately likely to have serious safety hazards: no fire doors, inadequate escape routes, overcrowding, and missing smoke alarms. Tenants in unlicensed HMOs are at significantly higher risk.
Manual detection through door-to-door surveys costs councils thousands of pounds per confirmed HMO. Automated cross-referencing reduces detection costs by over 80%.
Detection Signals
RenterCheck analyses six categories of data to identify properties with a high probability of being unlicensed HMOs.
Multiple EPC Certificates
Multiple EPC certificates at one address suggest the property has been subdivided into separate letting units, a strong indicator of HMO conversion.
Council Tax Discrepancy
Single-occupancy council tax discount claimed on a property where EPC and other records suggest multiple occupants. Indicates potential undisclosed multi-occupancy.
Missing HMO Licence
Property occupied by 5 or more people forming 2 or more households requires a mandatory HMO licence. Occupancy indicators without a corresponding licence triggers detection.
Property Type Mismatch
A property registered as a single dwelling on council tax but listed as flats or bedsits in EPC records. Suggests conversion without proper licensing.
High Utility Consumption
Where utility data is available, abnormally high energy consumption relative to the property type can indicate higher occupancy than declared.
Planning Permission Gaps
Change of use from C3 (dwelling) to C4 (HMO) or sui generis (large HMO) requires planning permission. Properties without the correct planning class trigger alerts.
What Happens When an HMO Is Detected
Automated Alert
The property is flagged with a confidence score based on the number and strength of detection signals. High-confidence detections are prioritised for immediate investigation.
Risk Scoring
Each suspected HMO receives a risk score factoring in property age, area deprivation, complaint history, and proximity to other known HMOs. Higher-risk properties are investigated first.
Enforcement Recommendation
RenterCheck generates a recommended enforcement action: inspection, warning letter, or immediate civil penalty notice. All supporting evidence is compiled automatically for the officer.
Get notified when landlord checks go live
Penalties Councils Can Levy
The Housing Act 2004 and Renters' Rights Act 2025 give councils significant penalty powers. Under the RRA 2025, rent repayment orders have been doubled to a maximum of 24 months.
| Offence | Maximum Penalty | Typical Starting Amount |
|---|---|---|
| Operating an unlicensed HMO | Unlimited fine (magistrates) or civil penalty up to £30,000 | £17,000 |
| Failure to comply with HMO management regulations | Fine up to £5,000 per breach | £2,000 |
| Overcrowding in HMO | Fine up to £20,000 or civil penalty | £7,000 |
| Failure to comply with improvement notice | Unlimited fine or civil penalty up to £30,000 | £10,000 |
What This Looks Like in Practice
200
Suspected unlicensed HMOs identified by RenterCheck in the first quarter
85
Confirmed as unlicensed after officer inspection (42.5% hit rate)
£1.4M
In civil penalties issued, funding the entire enforcement team budget
Illustrative example based on typical borough outcomes. Actual results vary by local authority area and enforcement capacity.
Frequently Asked Questions
How accurate is automated HMO detection?
RenterCheck identifies suspected HMOs based on multiple data signals. Typical hit rates are 40% to 50% of flagged properties confirming as unlicensed HMOs on inspection. This is significantly more efficient than manual door-to-door surveys.
What data sources does the detection engine use?
The engine cross-references EPC Register data, council tax records (single-occupancy discounts, property bands), licensing databases, planning permission records, and where available, utility consumption data.
What happens when a suspected HMO is detected?
The property is flagged with a confidence score and the specific signals that triggered detection. It enters your enforcement pipeline for investigation. All evidence is compiled automatically so officers can proceed directly to inspection.
Can we use the revenue from HMO penalties to fund the platform?
Yes. Civil penalty income from unlicensed HMOs can be retained by the local authority and reinvested in housing enforcement activities, as confirmed by Section 126 of the Housing and Planning Act 2016.
Get Notified When Landlord Checks Go Live
The PRS Database launches late 2026. Be the first to check if your landlord is registered and compliant.
No spam. We will only email you when the PRS Database launches.