Local HMO compliance enquiry route
HMO Certificate Enquiries in Hillingdon
Prepare the separate safety records and property information needed for a Hillingdon HMO licence application, renewal, managed-house handover or compliance review. A qualifying HMO occupied by five or more people forming two or more households follows mandatory licensing. Hillingdon's borough-wide additional scheme comes into force on 24 August 2026 and extends licensing to qualifying shared HMOs occupied by three or more people forming two or more households that are not already mandatorily licensable. The council says applications must be made by 23 August 2026. Planning is a distinct decision: the borough-wide Article 4 direction requires permission before changing a C3 dwelling into a C4 HMO for three to six unrelated occupiers, while seven or more occupiers already use the larger-HMO planning route. Send the complete address, current and intended occupation, household groupings, shared amenities, measured plan, lawful-use history, safety reports, management contacts and deadline so the correct enquiries can be organised without treating the licence, planning decision and inspection reports as one certificate.
See all London HMO certificate areas
Resolve the August 2026 licence transition before choosing inspections
The immediate question is whether the property is already mandatorily licensable, enters the additional scheme on 24 August 2026, or falls within an exemption. The next questions concern planning status, the present room arrangement and the precise safety documents Hillingdon asks the applicant to upload.
Licence route and application date
List every occupier, explain which people form each household and identify the kitchen or bathroom facilities they share. Record whether the property has three, four, five, six or more residents. For a smaller qualifying HMO, confirm that the additional application was submitted by 23 August 2026 or explain its current council status.
Measured plan and detector locations
Prepare a plan of every floor showing room measurements, bathrooms, toilets, kitchen layout, stairs, final exits, smoke alarms and heat detectors. Mark any loft, basement, subdivided reception room or extension. The application documents and the physical accommodation must describe the same lettings and escape route.
C3, C4 and larger-HMO planning
State the existing lawful use, date of any conversion, proposed maximum occupation and relevant planning decisions. Hillingdon's borough-wide Article 4 direction removes the usual permitted development route from C3 to C4. Seven or more unrelated occupiers require the larger-HMO planning route in any event.
Reports, repairs and responsible people
Gather the full gas, fixed-electrical, fire-alarm, emergency-lighting, fire-risk and portable-appliance records that apply. Add evidence of completed remedial work and identify the proposed licence holder, property manager, freeholder or block manager. Confirm who can provide lawful access to every room and shared installation in scope.
Hillingdon access and responsibility can change across houses, airport-area rentals and managed blocks
Uxbridge, Cowley, Hillingdon, Hayes, Harlington, West Drayton and Yiewsley include terraces, semis, converted houses, flats above shops, purpose-built estates and newer apartment developments. Give the full flat and building address rather than only the postal town. Where a freeholder or managing agent controls entrance halls, risers, intake cupboards, communal detection or emergency lighting, state whether those areas are part of the request and obtain the appropriate access authority. Around town centres and Heathrow-facing transport corridors, allow for controlled parking, loading restrictions, gated developments and residents who may not be available during standard working hours.
Ruislip, South Ruislip, Eastcote, Ickenham, Northwood, Harefield and the borough's suburban estates include larger houses adapted with loft bedrooms, converted garages, rear additions or divided living rooms. Check the actual layout against old plans and tenancy schedules before attendance. Locate gas meters, boilers, consumer units, alarm panels, kitchens and final exits, and identify rooms with separate keys or restricted access. Some HA and UB postal addresses cross borough boundaries, so confirm the local authority from the complete address; licensing and planning rules follow the council boundary, not the familiar area name.
Build Hillingdon's upload pack from complete, current records
Hillingdon uses the same application process for mandatory and additional HMO licensing and publishes a specific supporting-document list. Each report has its own inspection boundary, date and purpose. The council licence regulates occupation and management; it does not replace those records or establish planning permission.
Gas safety record dated within one year
Hillingdon asks for a current gas safety certificate dated within one year. Identify the property, gas meters, boilers, fires, cookers, water heaters, flues and landlord-controlled appliances. Supply the complete signed record and separate evidence for any safety issue or repair completed after the inspection.
Valid electrical installation evidence
Provide the complete valid EICR or electrical certificate, including schedules, circuit information, observations and remedial confirmation. Clarify whether the inspection covers only the rented house or flat or also includes landlord-controlled common parts. Do not use a PAT report as a substitute for the fixed-installation assessment.
Alarm, emergency lighting and fire assessment
The council asks for a fire-detection test report dated within one year and a valid fire risk assessment. It also asks for an emergency-lighting report for a three-storey property. Show the detector and heat-alarm positions on the floor plan and keep the system tests, risk assessment and routine management checks identifiable.
PAT report, plan and management details
Hillingdon lists a valid PAT report alongside the measured floor plan and property-management information. Record which portable appliances are supplied, their locations and the test scope. Reconcile the plan, room uses, maximum occupation, licence holder, manager and safety reports before the online form is submitted.
What must Hillingdon HMO owners know before 23 August 2026?
Hillingdon Council says mandatory licensing applies where an HMO has five or more unrelated people and two or more households. Its additional designation covers the whole borough from 24 August 2026 to 23 August 2031 and, subject to the stated exclusions, applies to HMOs occupied by three or more people forming two or more households that are not mandatorily licensable. Applications opened on 20 May 2026 and the council requires qualifying applicants to apply by 23 August 2026.
The council's application checklist includes a measured floor plan showing bathrooms, toilets, kitchen, smoke alarms and heat detectors; a gas safety certificate dated within one year; a valid electrical report; a fire-alarm test report dated within one year; emergency-lighting evidence for a three-storey property; a fire risk assessment; and a PAT report. The borough-wide Article 4 direction separately requires planning permission for a C3-to-C4 HMO conversion. London Landlord Certifications can organise relevant inspection enquiries; it cannot determine licensing, planning, exemptions, room suitability or council acceptance.
Use Hillingdon's licensing, planning and evidence routes in the right sequence
1. Classify today's occupation
Confirm the number of residents, households and shared facilities and review any statutory exemption. Five or more qualifying occupiers use mandatory licensing. From 24 August 2026, qualifying HMOs with three or four occupiers also require a borough-wide additional licence.
2. Verify application and planning status
For the additional scheme, retain proof of an application made by the council's 23 August 2026 deadline. Separately establish whether the C3-to-C4 change or larger HMO has the required planning permission. A submitted licence application does not settle the planning position.
3. Reconcile the evidence before inspection
Compare the measured plan, detector locations, residents and room uses with the gas record, EICR, alarm test, emergency-lighting report, fire assessment and PAT record. Resolve expired documents, incomplete pages, altered rooms, inaccessible spaces and mismatched addresses before the council or letting deadline.
Practical HMO certificate questions for Hillingdon properties
Is there one HMO certificate for a Hillingdon property?
No. Hillingdon Council issues the relevant property licence. Gas, fixed-electrical, PAT, fire-alarm, emergency-lighting, fire-risk, floor-plan and planning evidence remain separate records and decisions.
Which Hillingdon HMOs need an additional licence from 24 August 2026?
Subject to the exclusions in the designation, the borough-wide scheme covers HMOs occupied by three or more people forming two or more households who share facilities and are not already covered by mandatory HMO licensing. It runs from 24 August 2026 to 23 August 2031 unless revoked earlier.
What is the Hillingdon additional HMO licence application deadline?
Hillingdon Council says applications opened on 20 May 2026 and full compliance is required by Sunday 23 August 2026. From Monday 24 August 2026, a qualifying HMO without an application or compliance may face enforcement action.
Does a three-to-six-person HMO need planning permission in Hillingdon?
A separate planning check is required. Hillingdon's borough-wide Article 4 direction requires permission to change a C3 dwelling into a C4 HMO for three to six unrelated people. A property for seven or more unrelated people already requires the larger-HMO planning route.
What documents does Hillingdon request with an HMO licence application?
The council lists measured floor plans showing facilities and detector positions, a gas safety certificate dated within one year, a valid electrical report, a fire-alarm test report dated within one year, a valid fire risk assessment, a PAT report and an emergency-lighting report for a three-storey property.
Need to organise a Hillingdon HMO application evidence pack?
Send the complete Hillingdon address, occupier and household schedule, shared amenities, existing and proposed use, measured plan, alarm and heat-detector positions, additional or mandatory application status, planning history, current gas, electrical, fire and PAT records, remedial proof, responsible managers, access arrangements and due date. We can then route the appropriate inspection enquiries without implying that a safety report supplies the HMO licence or planning approval.