One-Day Rewire for HMOs: Multi-Circuit Compliance for Licensed Properties
HMOs are not standard houses, and rewiring an HMO is not a standard rewire. A House in Multiple Occupation has more circuits, more stringent fire safety requirements, specific consumer unit configurations, and licensing conditions that dictate exactly what the electrical installation must include. A traditional rewire of an HMO can take two to three weeks — longer than a standard house because of the additional circuits and fire safety systems.
A one-day HMO rewire from Manchester Compliance delivers the same multi-circuit, fire-compliant installation in a single day. This guide explains what makes HMO rewiring different, what the installation includes, and how we handle the additional complexity within the one-day timeframe.
What Makes HMO Rewiring Different
More Circuits
A standard three-bedroom house has six to eight circuits. A five-bedroom HMO typically has fourteen to twenty circuits because:
- Individual room circuits: Many licensing authorities require or recommend separate socket circuits for each lettable room, so that a fault in one room does not affect another tenant's power supply
- Communal area circuits: Hallways, stairs, landings, communal kitchens and bathrooms have their own dedicated circuits
- Fire alarm circuit: A dedicated, unswitched supply for the fire alarm panel
- Emergency lighting circuit: A dedicated supply for emergency lighting units in common areas and escape routes
Fire Alarm System
HMO licensing in Manchester (and across Greater Manchester) requires a fire detection and alarm system. The level of system depends on the property size and licensing conditions:
- Category LD2 (Most common for smaller HMOs): Detectors in escape routes plus high-risk rooms (kitchens). Typically interlinked smoke and heat detectors on a dedicated mains circuit.
- Category LD1 (Larger HMOs and some local authority requirements): Detectors in all rooms, including bedrooms, plus escape routes. More comprehensive coverage.
- Grade A system (Large or high-risk HMOs): A conventional or addressable fire alarm panel with dedicated detection circuits, sounders, and call points. This is a separate system from the main electrical installation but needs a dedicated power supply from the consumer unit.
Emergency Lighting
HMO licensing conditions typically require emergency lighting in:
- Common hallways and stairways
- At changes of direction in escape routes
- At final exit doors
- At any point where the escape route is unclear
A one-day HMO rewire includes the emergency lighting circuit and luminaire installation as part of the scope.
Consumer Unit Configuration
An HMO consumer unit is more complex than a standard domestic board:
- More ways: 18-way or 24-way boards are common for five to six-bedroom HMOs
- More RCDs: Three or four RCDs to provide separate protection for different groups of circuits (tenant rooms, communal areas, fire safety systems)
- Dedicated fire alarm supply: An unswitched, non-RCD protected supply for the fire alarm panel (so that an RCD trip does not kill the fire alarm)
- Dedicated emergency lighting supply: Separate from general lighting so that maintenance work on general lighting does not affect emergency lighting
- Labelling: Clear, comprehensive labelling so that any engineer or tenant can identify which circuit serves which room or area
Separate Metering
Some HMOs have separate electricity meters for each room, allowing tenants to pay for their own electricity. If your HMO uses this arrangement, the rewire must maintain the separate metering layout with individual sub-distribution boards feeding each room from the landlord's main supply.
How We Rewire an HMO in One Day
Larger Team
A standard house rewire uses five to six electricians. An HMO rewire uses six to eight electricians, with specific roles assigned to:
- Core team (3-4 engineers): Main cable routes, consumer unit, communal area circuits
- Room team (2-3 engineers): Individual room circuits, socket installation, room accessories
- Fire safety specialist (1 engineer): Fire alarm circuit, smoke and heat detectors, emergency lighting, testing and commissioning of fire systems
Pre-Planning Is Critical
The survey for an HMO rewire is more detailed than for a standard house. Our surveyor assesses:
- Licensing conditions for the specific local authority (Manchester, Salford, Stockport, Tameside, Oldham and Rochdale each have their own HMO licensing conditions)
- Fire risk assessment requirements
- Number of lettable rooms and occupancy levels
- Communal facilities (kitchens, bathrooms, living spaces)
- Escape routes and fire door positions
- Existing fire alarm and emergency lighting (if upgrading rather than new installation)
- Metering arrangements
Day Structure
| Time | Activity | |------|----------| | 07:00 | Team arrives (6-8 electricians + plasterer) | | 07:00-08:30 | Setup and strip-out of existing installation | | 08:30-13:30 | First fix — all cable routes installed simultaneously | | 11:00-16:00 | Plastering runs concurrently | | 13:30-16:30 | Second fix — accessories, fire alarm, emergency lighting | | 16:00-17:30 | Consumer unit completion, full testing of all circuits | | 17:00-18:00 | Fire alarm commissioning and emergency lighting test | | 18:00-19:00 | Clean up, documentation and handover |
An HMO rewire may run an hour longer than a standard house rewire due to the additional fire system commissioning and testing. Expect handover by 6:30 PM to 7:00 PM.
Licensing Compliance by Local Authority
Manchester City Council
Manchester's HMO licensing conditions typically require:
- Mains-wired interlinked smoke and heat detectors (LD2 minimum)
- Emergency lighting in all common escape routes
- Satisfactory EICR every five years
- Fire risk assessment
- Electrical installation to BS 7671
Salford City Council
Salford has some of the strictest HMO licensing conditions in Greater Manchester:
- Grade D LD2 system as a minimum (many properties require LD1)
- Emergency lighting with three-hour duration
- Fire blanket in kitchen areas
- Satisfactory EICR
- Specific socket and switch requirements in tenant rooms
Stockport, Tameside, Oldham, Rochdale
Conditions vary by authority but generally require:
- LD2 fire detection minimum
- Emergency lighting in common areas
- Five-yearly EICR
- Fire risk assessment compliance
What You Receive
Electrical Documentation
- Electrical Installation Certificate (EIC): Covering the complete rewire including all circuits
- Part P Building Regulations notification: Registered via our NICEIC membership
- Circuit chart: Detailed consumer unit schedule showing every circuit
- Test results schedule: Full test results for every circuit
Fire Safety Documentation
- Fire alarm commissioning certificate: Confirming the system has been installed and tested to BS 5839-6
- Emergency lighting commissioning certificate: Confirming luminaires are installed, tested and providing the required lux levels and duration
- Detector and luminaire schedule: Listing the location and type of every detector and emergency luminaire
Guarantees
- 6-year workmanship guarantee on the electrical installation
- Manufacturer warranties on the consumer unit, fire alarm components and emergency lighting units
Cost Guide
| HMO Size | Circuits | One-Day Rewire Price | |----------|----------|---------------------| | 3-bed HMO | 10-14 | From £5,000 | | 4-bed HMO | 12-16 | From £6,000 | | 5-bed HMO | 14-18 | From £7,000 | | 6-bed HMO | 16-22 | From £8,500 | | 7+ bed HMO | 20+ | From £10,000 (quoted individually) |
Includes: Full rewire, consumer unit, mains-wired fire alarm system (LD2), emergency lighting in common areas, all plastering and making good, full testing and certification, Part P notification and 6-year guarantee.
Additional costs that may apply:
- Grade A fire alarm panel system: Add £1,500 to £3,000 depending on property size
- Separate sub-metering for individual rooms: Add £300 to £500 per room
- External emergency lighting: Add £150 to £300 per luminaire
- Fire door hold-open devices (electromagnetic): Add £200 to £400 per door
Book Your HMO Rewire
Manchester Compliance rewires HMOs across Greater Manchester in a single day. We understand HMO licensing requirements across Manchester, Salford, Stockport, Tameside, Oldham and Rochdale, and we design every installation to meet or exceed the conditions on your licence.
Call 0161 706 1360 for a free survey and quote, or email hello@manchestercompliance.co.uk.
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