Wondering how much it costs to replace a consumer unit in Lewes? You’re looking at £500-£1,500 depending on your property size and requirements. Here’s everything you need to know.
Quick Answer: Consumer Unit Replacement Costs
| Property Type | Cost Range | Time Required |
|---|---|---|
| 2-bed flat | £500-£650 | 3-4 hours |
| 3-bed house | £650-£900 | 4-5 hours |
| 4-bed house | £900-£1,500 | 5-8 hours |
What’s included: Consumer unit, RCDs, MCBs, installation, testing, certification, and Building Control notification.
Need a quote? Call LH Electrical on 01273 443324 for a free assessment.
What Is a Consumer Unit?
A consumer unit (also called a fuse box) distributes electricity throughout your home and protects circuits from overloads. Modern units feature:
- RCD protection – Cuts power in milliseconds to prevent electric shocks
- Circuit breakers (MCBs) – Replace old-style fuses
- Metal casing – Fire safety requirement since 2018
Old fuse boxes with rewirable fuses lack these safety features and don’t meet current regulations.
Why Replace Your Consumer Unit?
It’s a Legal Requirement
The 18th Edition regulations (BS 7671:2018) require:
- RCD protection on all circuits
- Metal enclosures (no plastic)
- Surge protection in certain installations
Insurance Demands It
Many insurers now require:
- Valid electrical certificates
- Modern consumer units
- Regular electrical testing (EICR)
An outdated fuse box can invalidate your home insurance.
Safety First
Old consumer units increase risk of:
- Electric shocks
- Electrical fires
- System overloads
Modern RCDs can prevent fatal accidents by cutting power in 40 milliseconds.
Signs You Need a Replacement
Replace your consumer unit if you notice:
- Over 25 years old – Components deteriorate over time
- Rewirable fuses – Dangerous and outdated
- No RCD protection – Doesn’t meet current standards
- Scorch marks or burning smell – Fire risk
- Wooden backing board – Common in older Lewes properties
- Frequent tripping – Overloaded or failing
- Adding EV charger – Old units can’t handle the load
- Failed EICR – C1 or C2 codes mean replacement needed
Not sure? We offer free assessments. Call 01273 443324.
Consumer Unit Replacement Cost Breakdown
Standard Replacement: £500-£800
Includes:
- 8-12 way consumer unit (Hager, Schneider, or Fusebox)
- Dual RCD protection
- MCBs for all circuits
- Professional installation
- Full testing and certification
- Building Control notification
Best for: Most 2-3 bedroom homes in Lewes
With Surge Protection: £700-£1,000
Adds surge protection device (SPD) to protect expensive electronics from power spikes. Recommended for:
- Properties with valuable equipment
- Home offices
- Smart home setups
- Some insurance policies require it
Extra cost: £150-£200
Large/Complex Installation: £1,000-£1,500+
For properties needing:
- 16-20 way consumer units
- Multiple distribution boards
- Upgraded meter tails
- New earthing systems
- Extensive additional work
Typical for: 4+ bedroom properties or complex setups
What Affects the Cost?
Number of Circuits
- 6-8 circuits: £500-£650
- 8-12 circuits: £650-£900
- 12-16 circuits: £900-£1,200
- 16+ circuits: £1,200-£1,500+
Location and Access
- Easy access (hallway): Standard price
- Difficult access (cupboard, loft): Add £100-£200
- External location: Add £150-£300 (weatherproof enclosure needed)
Additional Work Required
Upgraded meter tails: £150-£300 Old cables from meter often need replacing.
New earthing system: £100-£250 Many older Lewes properties have inadequate earthing.
Main bonding: £80-£150 Gas and water pipes must be properly bonded.
Circuit upgrades: £100-£300 per circuit Some circuits may need modernizing.
What’s Included in Our Service
✓ Free site survey and quote ✓ High-quality consumer unit (Hager/Schneider/Fusebox) ✓ All RCDs and MCBs ✓ Professional installation by NAPIT electrician ✓ Comprehensive testing ✓ Electrical Installation Certificate ✓ Building Control notification (no extra fee) ✓ 12-month workmanship warranty ✓ Same-day completion (most jobs) ✓ Clean and tidy service
Period Properties in Lewes
Many Lewes homes are Victorian or Edwardian with unique challenges:
Common issues:
- Solid walls (harder to route cables)
- Lath and plaster (fragile)
- Outdated earthing
- Old meter tails
- Conservation area considerations
LH Electrical has 15+ years experience with Lewes period properties. We understand how to work sympathetically with historic buildings while meeting modern safety standards.
Recent job: Victorian terrace, 12-way consumer unit upgrade, £750, completed in one day.
The Installation Process
What Happens on the Day
Duration: 3-5 hours for most properties
Process:
- Isolation – Power safely turned off
- Removal – Old consumer unit disconnected
- Installation – New unit fitted and wired
- Testing – Comprehensive electrical tests
- Power on – Circuits restored and verified
- Handover – Walkthrough and certificates
Disruption: Minimal. Power off for 3-5 hours. Property left clean and tidy.
Why Choose a NAPIT Electrician?
Part P Compliance: Consumer unit replacement is notifiable work. Using a NAPIT electrician means:
✓ Self-certification (no separate Building Control inspection) ✓ No extra Building Control fees (saves £150-£300) ✓ Legal compliance guaranteed ✓ Proper certification for selling your property ✓ Insurance validity
DIY or unqualified work can result in:
- Invalidated insurance
- Fines up to £5,000
- Can’t sell your property
- Serious safety risks
Frequently Asked Questions
How long does replacement take?
3-5 hours for standard installations. Larger properties may take 6-8 hours. All completed same day.
Will I be without power all day?
No. Power is off for 3-5 hours during installation. We’ll schedule a convenient time.
Can I DIY this?
No. It’s illegal without proper certification and extremely dangerous. Must be done by a registered electrician.
Is Building Control included?
Yes. As NAPIT electricians, we handle all certification and Building Control notification at no extra cost.
Do you guarantee the work?
Yes. 12-month workmanship warranty plus 5-10 year manufacturer warranty.
Do I need a new unit for an EV charger?
Often yes, especially if your current unit is old or full. We’ll assess and advise honestly.
What brands do you install?
Hager, Schneider Electric, and Fusebox – all premium brands trusted by professionals.
How quickly can you come?
Usually within 1-2 weeks. Urgent jobs prioritized within 2-3 days.
Real Lewes Example
Property: 3-bed Victorian terrace, Lewes town centre Issue: 40-year-old fuse box, failed EICR, insurance requirement Solution: 12-way Hager consumer unit with RCD protection Additional work: Main bonding, upgraded meter tails Cost: £850 Time: Completed in 5 hours Result: Passed EICR, insurance approved, fully compliant
Why Choose LH Electrical?
15+ years serving Lewes and East Sussex
- NAPIT registered and fully insured
- Specialists in period properties
- Transparent pricing, no hidden costs
- 5-star Trustpilot rating
- Local, family-run business
- Same-day completion
- Free quotes and surveys
Get Your Free Quote Today
Consumer unit replacement in Lewes costs £500-£1,500 depending on your property. Don’t risk DIY or unqualified work – choose NAPIT-registered professionals.
Call LH Electrical: 01273 443324
Service areas: Lewes, Eastbourne, Uckfield, Crowborough, Hailsham, Seaford, Peacehaven, and across East Sussex.