How to Convert a House to an HMO in Scotland

Converting a standard house or flat into a multi-tenant HMO in Scotland is not a single application. It is three separate regulatory processes — planning, building standards, and HMO licensing — each run by a different council department, each with its own timeline, and none of them conferring approval in the others. Getting the sequence wrong costs months and thousands of pounds in wasted work.

Step One: Planning Permission

Under Scottish planning law and Planning Circular 2/2012, housing three or more unrelated persons in a residential property is a material change of use from Class 9 (Houses) to Sui Generis HMO. Edinburgh, Glasgow, Aberdeen, and Dundee require planning permission or a Certificate of Lawful Use or Development at the three-person threshold; other councils set their own local triggers.

Before spending money on fire doors or floor plans, check:

• Does the council require planning consent for your occupancy level? The named urban councils trigger it at three unrelated persons. Some rural or smaller authorities set the threshold higher.
• Does an overprovision policy apply? Edinburgh enforces overprovision limits in high-density student areas under section 131A. Aberdeen has no licensing overprovision policy but enforces a 12% planning concentration cap in Small Data Zones. Glasgow applies ward-level density assessments.
• Can you get a Certificate of Lawful Use? If the property has been used as an HMO continuously for ten years without enforcement action, a CLEUD may establish its planning status without a new application.

Planning refusal does not stop you from applying for an HMO licence, but operating without planning consent is a separate enforcement risk. Both departments act independently.

Step Two: Building Standards

Physical alterations to create bedrooms, add bathrooms, or install fire separation may need a building warrant under the Building (Scotland) Act 2003. Common conversion works that trigger a warrant:

• Installing FD30 fire doors with self-closing devices and intumescent seals
• Adding or modifying a bathroom (plumbing and drainage changes)
• Structural partitions to create additional bedrooms
• Upgrading the electrical system to meet EICR standards for the increased load
• Installing interlinked mains-powered smoke and heat detection (Grade D1, Category LD2 or LD1)

A completion certificate from the council's Building Standards department confirms the work meets current regulations. An HMO licence does not replace any building standards approval or certificate required for the work.

Step Three: HMO Licensing

Once you have planning consent (or confirmed it is not required) and completed any physical works, apply for the HMO licence under Part 5 of the Housing (Scotland) Act 2006. The application requires:

• Gas Safety Certificate (annual)
• EICR (valid for five years, covering the full licence term)
• PAT testing (annual)
• Fire risk assessment
• Dimensioned floor plans at 1:50 or 1:100 scale
• Public liability insurance (minimum £5 million)
• Style PRT agreement

You must also display a site notice on or near the property for 21 days and submit a Certificate of Compliance confirming it was properly displayed. Neighbours can lodge objections during this period, and objections can send the application to a Licensing Sub-Committee hearing.

Conversion Costs to Budget For

A realistic conversion budget for a three- or four-bedroom property:

Edinburgh's 2026/27 licence fee for three occupants is £164 (one year) or £424 (three years). Glasgow charges £2,452 for a new three-year licence for up to ten occupants.

The Sequence That Saves Money

Do not fit fire doors and install alarms before you know whether planning permission will be granted. The efficient order is:

1. Pre-application planning enquiry → formal planning application if required
2. Building warrant for physical works (can run concurrently with planning in some councils)
3. Physical conversion work
4. Safety certificates (Gas, EICR, PAT, fire risk assessment)
5. HMO licence application

The council must determine the licence within 12 months of receiving a valid application. If it fails to do so, the licence is deemed granted for one year under section 134(4). But this deemed-grant scenario is rare — most councils process applications within three to nine months.

For the full application process, document checklists, and a room-by-room inspection prep sheet, the Scotland HMO Licensing Guide covers every stage of getting a conversion property licensed.

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