Fixington

Extend wiring for new light where there hasn’t been one before

Trade: Electrician

⭐ Introduction

Extending wiring for a new light where there hasn’t been one before is a common electrical job homeowners consider when they want to brighten up a room, add extra lighting for safety, or improve functionality. Whether it’s creating an overhead light in a windowless corridor or adding a pendant light in a snug, extending wiring lets you have a new, safe, and legal electrical light point.

This task is particularly handy if your current lights don’t provide enough illumination or if you’re redecorating or renovating and want to update or reposition lights. It’s important to get the extension done correctly, following UK electrical standards, so your new light is safe and compliant with Part P Building Regulations.

🔧 What the job involves

Extending the wiring for a new light generally means running electrical cables from an existing lighting circuit or an appropriate power source to the desired new light location. This involves several key steps:

  • Locating a suitable existing circuit to connect to, usually by tracing cables in your ceiling or walls.
  • Installing necessary cables (often twin and earth cables), fixed securely as per approved methods.
  • Adding any switches or controls for the new light, commonly a wall switch wired into the circuit.
  • Fitting the new light fitting safely, ensuring it’s compatible with the wiring and circuit capacity.
  • Testing all connections and the new light to confirm it works correctly and safely.
  • Ensuring work complies with UK wiring regulations (BS 7671) and Part P of the Building Regulations, which often means notifying your local authority or using a registered electrician who can self-certify.

📝 Step-by-step from booking to completion

  1. Initial enquiry: Contact a qualified electrician to explain what you want—a new light where there wasn’t one before.
  2. Site survey and quote: The electrician visits your home to inspect the intended area, existing wiring, and accessibility. They’ll provide a quote detailing labour, materials, and any extra costs.
  3. Scheduling the work: Agree a date and time for the electrician to carry out the work. They will confirm how long the job might take and any preparation you need to do.
  4. Day of works: The electrician arrives, isolates power to the relevant circuits, and carefully runs wiring from the existing circuit to the new light point.
  5. Installation: They install any required switches, fix the light fitting, and make all electrical connections safely.
  6. Testing and certification: The electrician tests the new wiring and fitting, issues any required paperwork (such as an Electrical Installation Certificate or a Building Regulations Compliance Certificate if applicable).
  7. Clean-up and completion: They tidy up, remove waste, and confirm with you that the new light functions as expected.
  8. Record keeping: Keep the certificates or paperwork safe for future reference or home sales.

💷 Main costs to expect

  • Labour: Electricians usually charge hourly or offer a fixed quote. For extending wiring and fitting a single light, this might be around £100–£200 for a straightforward job.
  • Materials and parts: Twin and earth cable, conduit (if used), consumer unit additions if needed, new switch and light fitting (£20–£100 typically).
  • Extras: Wall chasing (cutting into plaster or brickwork), re-plastering, or rewiring parts of circuits if complications arise.
  • Disposal: Minor waste (old fittings, cable offcuts) — usually included in labour costs.
  • Certification: If part P notification or Building Regulations sign-off is required through an electrician’s certificate, this can add £50–£100.

Example breakdown (approximate):

  • Labour: £150
  • Materials: £40
  • Certification: £75
  • Total: ~£265

📊 What affects the price

  • Access: Is wiring easy to reach (e.g. accessible loft, dry walls) or difficult (solid brick walls, high ceilings)?
  • Complexity: Number of cables to run, need for new switch(s), or installation of multiple lights.
  • Regulations and certification: Whether your electrician will self-certify or if local authority notification is required.
  • Remedial works: Any damage repair to walls, ceilings, decorative finishes after chasing or cable runs.
  • Location: Jobs in London or remote areas may cost more due to labour rates and travel.
  • Timeline: Urgent or out-of-hours work typically costs more.

⏱ How long does it take?

  • Simple extension and fitting a new ceiling light: 2–4 hours.
  • More complex jobs (multiple light points, new wiring runs behind walls or ceilings): 1–2 days.
  • Including decorative repairs or new consumer unit updates: Add extra time depending on the scope.

🏠 Can you DIY it?

Extending wiring for a new light is not generally recommended as a DIY task unless you have serious electrical experience and knowledge of UK regulations. This is because:

  • Electrical work must comply with Part P Building Regulations; incorrect wiring risks fire, shock, or damage.
  • Working near power supplies is dangerous if isolated incorrectly.
  • Certification is required for compliance and insurance purposes.
  • Mistakes can affect home insurance or future sales.

Hiring a Gas Safe registered plumber is not applicable here, but only a qualified electrician registered with a competent person scheme (e.g., NICEIC, NAPIT) should undertake this work.

💰 Typical UK price range

You can expect to pay roughly between £200 and £500 plus VAT for a straightforward extension for a new single light fitting, with prices increasing for complexity or larger jobs. All prices depend on your home’s specifics and local electrician rates.

VAT at 20% usually applies, but sometimes your electrician’s quote is VAT inclusive, so always check.

✅ Handy tips before you start

  • Clear the area where the electrician will work, including loft access if needed.
  • Write down any preferences about light fittings or switches you want installed.
  • Ask for a written quote with all costs outlined, including certification.
  • Ensure your electrician is registered with a competent person scheme for Part P compliance.
  • Keep all certificates and paperwork safely; they prove the work meets legal standards.
  • If decorating afterwards, wait at least a day before redecorating to avoid dust or damage.
  • Discuss future access for maintenance—consider a light fitting that’s easy to change or repair.
  • Don’t try to connect or test wires yourself to avoid risks.

By preparing your home and using a qualified electrician, you’ll have safe, reliable new lighting that meets UK standards and improves your living space.