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Unsure if your Hertford home needs a full or part rewire? Learn the key differences, when each is required, and what’s best for safety and compliance.

Full vs. Part Rewire Hertford | How to Choose the Right Option

When it comes to updating your home’s electrical system, one of the most common questions Hertford homeowners ask is: Do I need a full rewire, or will a part rewire be enough?

The answer depends on the age, condition, and safety of your current wiring — and sometimes on your future renovation plans. Choosing the right option isn’t just about cost; it’s about keeping your home safe, compliant, and ready to handle the demands of modern living.

This guide will help you understand the differences between a full and part rewire, when each is necessary, and what’s involved in the process.

1. What is a Full Rewire? 

A full rewire replaces all of the electrical wiring in your property. This includes:

  • New cabling throughout the home.
  • Replacement of all switches, sockets, and light fittings.
  • A new consumer unit with modern circuit protection.
  • Updated earthing and bonding to current regulations.

When you might need a full rewire:

  • Your home is over 30 years old and hasn’t been rewired.
  • The wiring is unsafe or fails an Electrical Installation Condition Report (EICR).
  • You’re doing major renovations or extensions.

2. What is a Part Rewire? 

A part rewire updates only certain circuits or sections of your home’s wiring. This could involve:

  • Rewiring a single room (such as a kitchen or extension).
  • Updating old lighting circuits.
  • Replacing wiring damaged by wear, pests, or water ingress.

When you might need a part rewire:

  • Most of your wiring is in good condition, but some circuits are outdated.
  • You’re refurbishing part of your home and want it brought up to standard.
  • You need to add new electrical capacity in certain areas.

3. How to Decide Which You Need 

The best way to determine whether you need a full or part rewire is with a professional inspection. A qualified electrician will:

  • Test your circuits for safety.
  • Check wiring insulation condition.
  • Assess compliance with the latest wiring regulations (BS 7671).
  • Advise on the most cost-effective, future-proof option.

4. The Pros and Cons of a Full Rewire 

Pros:

  • Brings the whole property up to current safety standards.
  • Provides peace of mind for years to come.
  • Increases property value and marketability.
  • Allows for modern electrical demands.

Cons:

  • More expensive than a part rewire.
  • More disruptive to your home (though we minimise mess).

5. The Pros and Cons of a Part Rewire 

Pros:

  • Less costly than a full rewire.
  • Less disruptive.
  • Ideal for targeted upgrades.

Cons:

  • Older wiring elsewhere in the property may still cause issues later.
  • May require future rewiring if other circuits deteriorate.

6. What’s Involved in the Process? 

Whether you choose a full or part rewire, the process generally includes:

1.    Initial Survey – Detailed inspection of your wiring.
2.    Quotation – Clear, no-hidden-fees pricing.
3.    First Fix – Running new cabling before plastering or decorating.
4.    Second Fix – Installing switches, sockets, and fittings.
5.    Testing & Certification – Ensuring everything meets safety standards.

7. How Long Will it Take? 

  • Full Rewire – Typically 5–10 days for a 3-bedroom house in Hertford.
  • Part Rewire – Often completed in 1–3 days, depending on the scope.

8. Safety and Legal Requirements 

Rewiring is notifiable work under Part P of the Building Regulations, which means it must be carried out by a qualified, registered electrician. This ensures the work is safe, certified, and compliant with UK law.

Your Next Step 

If you’re unsure whether your Hertford home needs a full or part rewire, the safest way forward is to arrange a professional inspection.

Call JJB Electrical Ltd on 01992 276087 to book your free, no-obligation survey. We’ll assess your wiring, explain your options clearly, and ensure your home is safe, compliant, and ready for the future.