Indicative Klang Valley ranges — get an exact quote on WhatsApp.
Rewiring cost by home size
| Home type | Scope | Indicative cost |
|---|
| Studio / small apartment (<700 sq ft) | Full rewire, new consumer unit | RM4,000 – RM8,000 |
| 2–3 bedroom condo (700–1,300 sq ft) | Full rewire, new consumer unit | RM6,000 – RM12,000 |
| Single-storey terrace house | Full rewire | RM8,000 – RM15,000 |
| Double-storey terrace house | Full rewire | RM12,000 – RM20,000 |
| Semi-D / bungalow | Full rewire | RM15,000 – RM30,000+ |
| Partial / add points | Per area or per circuit | from RM1,500 |
What drives the rewiring cost?
| Cost component | Approx. share of total | Notes |
|---|
| Cable (wiring material) | 25–35% | 3-core PVC/XLPE; spec mandated by IEE Wiring Regs |
| Labour (licensed wireman + helpers) | 40–50% | Chasing, running, terminating, testing |
| Consumer unit (DB board) | 10–15% | New RCCB + MCB set; include ELCB/RCBO for safety |
| Sockets, switches, outlets | 10–15% | Standard vs premium brand (Clipsal, Legrand, etc.) |
| Plastering & painting (wall chases) | 5–15% | Chased wiring requires patching; surface trunking avoids this |
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. ClickBina uses licensed wiremen for all electrical work and can provide the certification paperwork.
The rewiring process: what to expect
- Assessment: licensed wireman inspects existing wiring, draws up a scope of works and quotes circuit-by-circuit.
- TNB disconnection: the supply is disconnected at the meter before any rewiring begins.
- Chasing / cable routing: walls are chased (grooved) or surface trunking is installed for the new cables.
- New consumer unit installation: old fuse box replaced with modern RCCB/MCB panel with ELCB protection.
- Termination and testing: all circuits are terminated, continuity tested and insulation resistance checked.
- Certification & TNB reconnection: wireman issues the certificate; TNB reconnects the supply.
- Plastering and patching: wall chases are filled and walls re-painted (or this is handed back to renovation contractor).
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.