What's the fine for an unlicensed HMO?

Up to £30,000 civil penalty, plus rent repayment orders and loss of Section 21.

Do I need a fire risk assessment?

Yes — annually, and documented.

What's the minimum room size?

6.51m² for one person over 10, 10.22m² for two — but licence conditions may be stricter.

Do HMOs need PAT testing?

Usually a licence condition — annual PAT testing of landlord-supplied appliances.

Can I convert a single let to an HMO?

Planning and building regs may apply — check with your council before starting.

Does Landvale handle HMOs?

Yes — per-room rent tracking, HMO licence renewals and fire safety scheduling.

Compliance · Pillar guide

The HMO Management Guide

The pillar guide to running HMOs in the UK — licensing, fire safety, room standards, tenancy management and the compliance stack that keeps HMOs profitable.

34 min read · 5,800 words · Updated 1 July 2026

In this guide

01HMO licensing 02Fire safety 03Room and amenity standards 04Per-room accounting

Key takeaways

HMOs are the highest-yield, highest-compliance corner of the market.

Mandatory licensing applies to 5+ occupants forming 2+ households.

Selective and additional licensing schemes vary borough by borough.

Fire safety is where most HMO landlords get caught.

Per-room accounting is a must — portfolio totals lie.

HMO licensing

Mandatory HMO licensing applies UK-wide to properties with 5+ occupants from 2+ households. On top, local councils run additional and selective licensing schemes — a Manchester HMO and a Cardiff HMO can face wildly different regimes.

Fire safety

Fire doors, interlinked alarms, emergency lighting, escape routes and annual fire risk assessments. This is where most HMO enforcement action starts.

Room and amenity standards

Minimum room sizes, kitchen and bathroom ratios, and waste storage. Check the specific licensing conditions in your borough — they override national minimums.

Per-room accounting

HMO cash flow only makes sense when you track rent, arrears and voids per room. Portfolio-level totals paper over rooms that are quietly losing money for months.

Frequently asked questions

Mandatory at 5+ occupants from 2+ households — plus any additional/selective scheme in your borough.