What does C2 mean on an EICR?

C2 means ‘potentially dangerous’ — the installation needs remedial action without delay, but it isn’t an immediate danger like a C1. Most EICRs with a C2 are still safe to occupy while repairs are arranged.

Should I replace my fuse board?

If it’s an older rewireable-fuse board rather than a modern RCBO consumer unit, most engineers recommend replacement — it won’t trip as reliably during a fault. We confirm on inspection and give you a fixed price before any work starts.

If you’re a landlord in England, yes — it’s a legal requirement at least every 5 years. Homeowners aren’t legally required to have one, but it’s recommended every 10 years or at a change of occupancy.

How much will electrical remedials cost?

It depends on what your report finds — a single C2 socket repair might be £65, while a full consumer unit replacement runs from around £450. Every finding on your report comes with its own priced quote.

Can I rent a property without an EICR?

No — private landlords in England must have a satisfactory EICR in place before a tenancy starts, and renew it at least every 5 years, under the Electrical Safety Standards (PRS) Regulations 2020.

Electrical Compliance in London | EICR, PAT & Fire Alarm

Four ways in

Start wherever you are

Whether you're booking your first inspection or managing a portfolio's certificate history, there's one door in for every stage.

01 / BOOK

I need an inspection

EICR
PAT Testing
Emergency Lighting
Fire Alarm
Thermal Imaging
Power Quality

Book now →

02 / UPLOAD

I have a certificate

AI reads it in seconds
Checks expiry date
Checks coding for errors
Flags missing information
Stores it forever

Upload now →

03 / QUOTE

I need repairs

Upload your report
Instant remedial quotation
Book an engineer
Receive your certificate

Get a quote →

04 / MANAGE

My building

Every inspection
Every certificate
Every invoice, every repair
Renewal reminders

Open passport →

Ask Polarity AI

Instant answers, before you even book

Tap a question, or ask your own — Polarity AI explains coding, cost and requirements in plain English.

YOU ASKED

Tap a question below to see how Polarity AI responds.

Demo responses shown for illustration — live AI answers use your actual report and property data.

AI upload centre

Upload anything, get an instant read

A certificate, a consumer unit photo, a distribution board, a thermal image — Polarity AI reads it and tells you what it means.

What are you uploading?

RESULT

Choose a document type above and select "Analyse upload" to see how Polarity AI reads it.

Demo analysis for illustration — a real upload is analysed against your actual file, not a preset script.

Services

Every service is an authority page, not a brochure card

Deep, specific and built for the property type in front of you — cost calculators, defect examples, case studies and instant booking on every one.

EICR

Electrical Installation Condition Reports

Full periodic inspection, coded to BS 7671, with a priced remedial breakdown.

View pricing →

PAT

Portable Appliance Testing

Per-item testing and asset tracking for every appliance on site.

View pricing →

Emergency Lighting

Emergency Lighting Testing

Monthly function tests and annual full-duration discharge tests.

View pricing →

Fire Alarm

Fire Alarm System Testing

Weekly call point checks and periodic BS 5839-1 servicing.

View pricing →

Thermal

Thermal Imaging Surveys

Switchboard and distribution board surveys that catch faults before they fail.

View pricing →

Power Quality

Power Quality Surveys

Load, harmonics and voltage monitoring for sensitive commercial equipment.

View pricing →

Interactive calculators

No static price lists — get your number now

Answer a few questions and get an instant, itemised estimate or compliance score. All five are live — try them.

Building type

Number of circuits

Distribution boards

Occupancy

Typical working hours

Estimated EICR price

£150

Based on 10 circuits, standard occupancy. Final price confirmed after a quick photo survey — never higher than this estimate without your sign-off.

Book at this price →

Number of items

Site type

Testing frequency

Estimated cost per visit

£90

Based on 25 items, domestic/small office, annual testing.

Book at this price →

Number of zones

Number of devices

System type

Estimated installation cost

£450

Based on 4 zones, 20 devices, domestic interlinked system.

Book at this price →

Property type

Valid gas safety certificate?

Valid EICR (last 5 years)?

Valid EPC?

Smoke alarm on every floor?

CO alarm where required?

PAT testing current (furnished lets)?

Compliance score

100%

All checks currently pass.

Book what's needed →

Valid EICR within 5 years?

Fire alarm serviced in 6 months?

Emergency lighting tested monthly?

PAT testing up to date?

Fire risk assessment in last 12 months?

RCD protection on all final circuits?

Any known unresolved electrical faults?

Staff trained on fire evacuation?

Commercial risk score

100/100

Insurance risk: Low · Legal risk: Low

Book a full inspection →

Shown as an 8-question representative sample of the full 15-question assessment.

What each score means

EICR & Fire AlarmFixed-price estimates, confirmed on survey, never increased without sign-off

PAT TestingPer-visit price scales with item count and site risk tier

Landlord ComplianceScore reflects the checks required under current landlord regulations

Commercial Risk ScoreA lower score flags where insurers and inspectors are most likely to raise issues

Book an inspection

Reserve your slot in under a minute

Pick a service, choose a date and we'll confirm by return. For EICR, PAT and fire alarm work your live estimate from the calculator above carries straight through — everything else is booked as a free custom quote after a quick survey.

Your details

All 10 core services are available to book here. Required fields are marked with an asterisk.

Service *

Full name *

Email *

Phone *

Postcode

Property address

Preferred date

Preferred time

Notes for the engineer

You're booking

EICR — Electrical Installation Condition Report

Estimate

£150

Live estimate carried through from the EICR calculator above. Final price is confirmed on survey and never increased without your sign-off.

This is a static site with no server. "Send" opens a pre-addressed, pre-filled email to info@polarityelectrics.com in your own mail app — the same way the enquiry links elsewhere on the site work. Nothing is sent until you press send there.

The building passport

Every property gets a permanent record

This is the asset nobody else offers — a single, portable history that follows the building, not the invoice.

Every certificate, every inspection, every repair
AI-generated compliance score, kept current automatically
Renewal reminders, sent before anything lapses
Shareable directly with buyers, insurers, solicitors, tenants

PROPERTY PASSPORT 92/100

Last EICRSatisfactory · 2026

PAT testingCurrent · 2026

Fire alarm serviceCurrent · 2026

Insurance readyYes

Sale readyYes

Next renewal dueFire alarm · 4 mo

Built for both sides of the job

One platform, two portals

Engineer Portal

Everything syncs on site

Engineers arrive, take photographs, thermal images and voice notes, and it's all written up and synced before they've left the driveway — Polarity AI drafts the report summary automatically.

Customer Portal

Everything visible, always

Invoices, reports, renewal dates and live engineer tracking, all in one place. Book repairs and download certificates without a single phone call.

How the site scales

Location × service × sector = thousands of authority pages

Every combination of location, service and sector becomes its own page, built for the exact search someone runs. Three examples of the pattern below — the full matrix runs to thousands.

EICR × London × Commercial

Commercial EICR London

Cost calculator, HSE guidance, NICEIC explanation, case studies and instant booking, built specifically for commercial landlords in London.

PAT × Kent × Restaurants

PAT Testing Restaurants Kent

Kitchen-equipment specific guidance, item-count pricing and example defects found in commercial kitchens across Kent.

Emergency Lighting × Essex × Schools

Emergency Lighting Testing Schools Essex

Term-time scheduling, occupancy-specific test intervals and case studies from schools across Essex.

Illustrative examples of the page-generation pattern — these three aren't live pages yet, and the other 9,997+ don't exist until they're built.

AI learning centre

Every regulation, explained in plain English

A small sample of the reference library — the long-term goal is full coverage of BS 7671, every code, every device, every landlord question.

BS 7671

What changed in the 18th Edition Amendment 2

A plain-English summary of the most recent wiring regulation updates and what they mean for existing installations.

Consumer Units

RCD vs RCBO: what's the difference?

How the two protection types differ, and why most modern consumer units use RCBOs on every circuit.

EICR Coding

C1, C2, C3 and FI — what each one means

A full breakdown of the BS 7671 observation coding system, with real examples of each category.

Landlord Duty

Electrical Safety Standards (PRS) Regs, explained

What the 2020 regulations actually require, and what happens if a landlord doesn't comply.

Fuse Boards

Rewireable fuses vs modern consumer units

Why older fuse boards are increasingly flagged on inspection, and what replacement actually involves.

Fire Alarms

BS 5839-1 categories, explained simply

What L1 through L5 and P1/P2 actually mean, and how to know which category a building needs.

Six example articles shown — the full learning centre would need to be written and published article by article, not generated in bulk.