House Rewiring Service
& Cost in Malaysia (2026)

Indicative Klang Valley ranges — Get Your Free Quote.

Rewiring cost by home size

What drives the rewiring cost?

Partial rewiring and add-point costs

Not every project requires a full rewire. Partial rewiring covers specific circuits, areas or additional power points:

• Add a 13A socket — RM150–RM400 depending on distance from the DB board.
• Rewire a kitchen (dedicated circuits for hob, hood, fridge, microwave) — RM2,000–RM5,000.
• Rewire a single floor of a double-storey terrace — RM5,000–RM10,000.
• Install or upgrade consumer unit (DB board) — RM1,500–RM3,500 including new RCCB, MCBs and ELCB.
• Add an EV charger circuit (dedicated 32A or 40A circuit) — RM800–RM2,500 (see our EV charger guide →).

Signs your house needs rewiring

• Frequent tripping of MCBs or blown fuses — indicates overloaded or deteriorating circuits.
• Old rubber or cloth-insulated cabling (common in pre-1990s homes) — insulation cracks and becomes a fire hazard.
• Warm switches, sockets with scorch marks, or a burning smell near the DB board.
• Flickering or dimming lights not caused by the bulb.
• No earth wire or ELCB (Earth Leakage Circuit Breaker) protection — a serious safety gap.
• Two-pin sockets throughout (modern appliances need 3-pin earthed sockets).
• Planning a major renovation that will add kitchen appliances, air-conditioning units or EV charging — the existing wiring may not handle the extra load.

Why it must be a licensed wireman in Malaysia

Electrical work in Malaysia must be carried out by a wireman registered with Suruhanjaya Tenaga (Energy Commission) under the Electricity Supply Act 1990. Unlicensed electrical work is illegal and:

• Voids your home insurance policy in the event of a fire.
• Creates personal liability if the wiring causes injury or death.
• Will fail TNB (Tenaga Nasional Berhad) inspection, preventing reconnection after works.

A licensed wireman can sign off the Electrical Installation Certificate (the “A” form), which you need to submit to TNB. Whoever does the work, ask for the wireman’s Suruhanjaya Tenaga registration and the certification paperwork.

The rewiring process: what to expect

1. Assessment: licensed wireman inspects existing wiring, draws up a scope of works and quotes circuit-by-circuit.
2. TNB disconnection: the supply is disconnected at the meter before any rewiring begins.
3. Chasing / cable routing: walls are chased (grooved) or surface trunking is installed for the new cables.
4. New consumer unit installation: old fuse box replaced with modern RCCB/MCB panel with ELCB protection.
5. Termination and testing: all circuits are terminated, continuity tested and insulation resistance checked.
6. Certification & TNB reconnection: wireman issues the certificate; TNB reconnects the supply.
7. Plastering and patching: wall chases are filled and walls re-painted (or this is handed back to renovation contractor).

Hiring a house rewiring service: what to ask

Two rewiring quotes for the same house can be thousands of ringgit apart because they are not pricing the same job. Before you hire any electrical rewiring service, ask for a written, circuit-by-circuit quote and check that it answers each of these:

• Who does the work — the name and Suruhanjaya Tenaga registration of the wireman who will sign off the installation.
• Full or partial — which circuits and rooms are being rewired, and which existing wiring is being kept.
• Chased or surface trunking — chased wiring is neater but needs wall cutting and patching; trunking is cheaper but visible.
• The DB board — whether a new consumer unit with RCCB and MCBs is included, and which brand.
• Points — how many sockets, switches and dedicated circuits (hob, aircon, water heater, EV charger) are in the price.
• Patching and painting — whether the wall chases are plastered and repainted, or handed back to you or your renovation contractor.
• Testing and paperwork — that the price covers testing, the Electrical Installation Certificate and the TNB reconnection step.
• Days without power — how many working days the supply will be off, so you can plan around the fridge, security system and work from home.

A quote that is silent on the DB board, the patching or the certificate is not cheaper — it has just left those items for later. For ClickBina, send us your job details on WhatsApp — the home type, its age and what is going wrong — and we reply within the hour with a free quote. If we need to see the wiring first, the site visit is RM150, waived if you go ahead with us.

What affects rewiring cost

• Home size and number of circuits: more sq ft means more cable, more sockets, more labour.
• Chased vs surface trunking: chased wiring is neater but requires wall cutting and plastering; surface trunking is faster and cheaper but visible.
• Occupied vs vacant: working around furniture and tenants adds time; vacant properties allow faster, cleaner work.
• Existing wiring condition: some old wiring can be retained and partially upgraded; heavily degraded systems require a full replacement.
• Number of DB boards: larger homes may have a main board and one or more sub-boards, each adding cost.
• Specification upgrades: arc-fault detection, smart switches, additional circuits for solar or EV add to the total.

Consumer unit (DB board) upgrade

Even without a full rewire, upgrading an old fuse box to a modern consumer unit with RCCB (Residual Current Circuit Breaker) and individual MCBs is one of the most cost-effective safety improvements you can make. A typical upgrade costs RM1,500–RM3,500 and provides:

• Earth leakage protection (ELCB/RCCD) — trips within milliseconds if current flows to earth, preventing electrocution.
• Individual circuit breakers for each circuit, so one tripped MCB does not black out the whole home.
• A clearly labelled board that makes fault-finding faster in an emergency.

How to save on rewiring costs

• Combine rewiring with a renovation project — walls are already open, reducing the cost of chasing and patching.
• Choose surface trunking in areas like service yards where aesthetics matter less — significantly cheaper than wall chasing.
• Get 3 quotes from licensed wiremen, but do not award purely on price — verify the wireman’s registration number with Suruhanjaya Tenaga.
• Phase the work: do the most safety-critical circuits (kitchen, consumer unit, any burned or cloth-insulated cables) first if budget is tight.

Common mistakes to avoid

• Hiring an unlicensed “handyman” for rewiring — illegal and dangerous.
• Not asking for the Electrical Installation Certificate — you need this document; ensure the wireman provides it.
• Skimping on the consumer unit — a cheap no-name RCCB offers much less protection than a certified unit (Legrand, Chint, ABB).
• Ignoring patching costs — wall chases left unplastered are unsightly and allow moisture ingress.

Timeline and disruption

Rewiring a terrace house typically takes 3–7 working days, depending on scope and whether the property is occupied. Key disruptions:

• Power will be off for most of each working day during active rewiring — plan accordingly (fridge contents, security system, work-from-home setup).
• Wall chasing creates dust — cover or move furniture before work begins.
• TNB reconnection may take 1–2 business days after the certificate is submitted.

Sources & official references

This guide refers to the laws, regulators, official bodies and references below. Rules, fees and procedures change — always confirm the current position with the source:

• Electricity Supply Act 1990 (Act 447) — Suruhanjaya Tenaga — official text of the Act; later amendments are gazetted separately, so check the current position.
• Suruhanjaya Tenaga — wireman competency — who may carry out electrical wiring work.
• Suruhanjaya Tenaga — EV charging system (EVCS) guide — installation requirements for EV chargers.
• Suruhanjaya Tenaga — residual current devices (RCD) — how an RCD protects against electric shock.
• TNB — apply for or change electricity supply — supply applications and the role of your registered electrical contractor.

How we estimated prices: where this guide gives renovation or service price ranges, those RM figures are typical Klang Valley market ranges for 2026, compiled from contractor quotations and supplier price lists. They are not official or fixed rates — the final price depends on your site, so confirm it on site before you commit. Statutory fees, fines, tax rates and tribunal limits come from the law or official body concerned, not from market quotes.