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As of late 2025, there are over 472,000 Houses in Multiple Occupation (HMOs) across England, with numbers continuing to rise year on year. HMOs provide affordable housing for tenants, but they also place greater responsibility on landlords to meet increasingly strict safety standards.
Electrical safety is a critical part of HMO compliance. Faulty or outdated electrical installations can pose serious risks to tenants and may lead to enforcement action, fines, or even prosecution if regulations are not met.
Having worked closely with landlords and property managers across the rental sector, we understand the practical challenges of keeping HMO properties safe, compliant, and well-maintained. In this guide, we outline five essential electrical safety tips to help landlords manage their HMO properties effectively and stay compliant with current regulations.
1. Maintain a Valid 5-Year EICR
What an EICR Inspection Covers in HMOs
A qualified electrician will assess the fixed electrical installation, including:
- The consumer unit (fuse board)
- Fixed wiring
- Sockets, switches, and accessories
Fixing Electrical Faults Identified in the EICR
If the report identifies any:
- C1 faults – immediate danger
- C2 faults – potentially dangerous
These issues must be rectified within 28 days, or sooner if specified in the report.
2. Implement Mandatory PAT Testing
While an EICR assesses the fixed electrical installation, Portable Appliance Testing (PAT) focuses on the electrical appliances provided by the landlord. This includes items such as kettles, microwaves, fridges, and washing machines.
Electrical Appliance Risks in Shared HMO Accommodation
In HMO properties, shared appliances, particularly in kitchens and utility areas are used far more frequently than in single-occupancy homes. This increased use leads to greater wear and tear, raising the risk of electrical faults if appliances are not regularly checked.
Recommended PAT Testing Frequency for HMO Landlords
Although legislation requires landlords to ensure that all supplied electrical appliances are safe, it is widely accepted industry best practice for HMO landlords to carry out PAT testing annually. Regular testing helps demonstrate due diligence and reduces the risk of electrical faults.
Who Is Responsible for Appliance Safety in an HMO?
Tenants remain responsible for the safety of their own personal electrical items, such as hair straighteners, phone chargers, and laptops. However, it is good practice to remind tenants of this responsibility as part of your tenancy agreement or welcome pack.
3. Install and Maintain Emergency Lighting in HMOs
For larger HMOs, particularly those with three or more storeys or complex layouts, emergency lighting is required. These lights, with battery backup, must illuminate documented escape routes, including hallways and staircases, in the event of a fire or power outage.
How to Test and Maintain HMO Emergency Lighting
Regular testing ensures that emergency lighting remains reliable:
- Monthly “flick test” – quickly checks that each light turns on
- Annual 3-hour soak test – confirms batteries can hold a full charge for the required duration
Keeping emergency lighting properly maintained not only protects tenants in an emergency but also helps landlords stay compliant with safety regulations and meet insurance requirements.
4. Prevent Socket Overloading in HMOs
A common issue we often encounter during EICRs in HMOs is socket overloading. Tenants frequently use extension leads to power phones, computers, lamps, heaters, and other appliances. In some cases, multiple extension leads are “daisy-chained” together, which significantly increases the risk of electrical faults and can lead to fires.
Safe Alternatives to Extension Leads
To reduce the risk, replace standard extension leads with fused multi-way extension bars. These provide built-in protection and are safer for high-demand appliances.
Installing Extra Sockets for HMO Safety
For long-term safety, consider installing additional wall sockets in areas of high demand. While this is a one-time cost, it dramatically reduces the risk of overloading and enhances overall electrical safety in the property.
5. Upgrade to RCD and AFDD Protection in HMOs
Modern electrical safety standards under BS 7671 (18th Edition Wiring Regulations) place strong emphasis on protective devices that disconnect power before an electric shock or fire can occur. For HMO landlords, upgrading consumer units to include these devices is one of the most effective ways to improve tenant safety.
RCD Protection for HMO Electrical Safety
Residual Current Devices (RCDs) should be installed on all relevant circuits within the consumer unit. RCDs monitor the flow of electricity and disconnect the supply within milliseconds if a fault is detected, significantly reducing the risk of serious or fatal electric shock.
AFDD Protection for High-Risk HMO Properties
For larger or higher-risk HMOs, landlords should also consider installing Arc Fault Detection Devices (AFDDs). AFDDs are designed to detect dangerous electrical arcing, which is a common cause of electrical fires and often goes unnoticed by standard circuit breakers.
Arcing faults can be caused by:
- Damaged or ageing cables
- Loose connections
- Wear and tear from frequent appliance use
By identifying these faults early, AFDDs provide an additional layer of fire protection, particularly in shared accommodation where electrical systems experience heavier use.
Protecting Tenants and Meeting HMO Electrical Regulations
We work closely with landlords and letting agents to help ensure their rental properties remain safe, compliant, and well maintained. From routine inspections and compliance testing to remedial works and electrical upgrades, our experienced team supports every stage of HMO electrical safety.
Our fully qualified and certified electricians operate across Nottinghamshire and Derbyshire, providing reliable support for electrical repairs, new installations, and ongoing compliance with current regulations. Whether you need an EICR, emergency lighting maintenance, or advice on improving electrical safety in your HMO, we’re here to help with clear guidance and practical solutions you can rely on.
If you’re unsure whether your property meets current electrical safety requirements, seeking professional advice early can help prevent issues and give you peace of mind.