Full House Rewiring in Malaysia — Cost, Timeline and What to Expect

Introduction

If your home was built before 2005, there is a real chance the original wiring is already past its service life. Insulation hardens, rubber cracks, and single-pole MCBs no longer meet modern safety standards.

This guide covers when a full rewiring is needed, the realistic cost in Ringgit, how long it takes, and how a licensed ST-registered electrician approaches the job in 2026.

When Does a Malaysian Home Need Full Rewiring?

Age-based triggers

• Home older than 25 years with original wiring
• Ceramic fuses still in use
• Aluminium conductors instead of copper
• No RCCB / ELCB fitted at the DB

Symptom-based triggers

• Lights dim when aircond kicks in
• MCB trips weekly
• Plug points warm to touch
• Burning smell from walls
• Brown stains around light switches

Full House Rewiring Cost in Malaysia (2026)

Prices vary with floor area, number of points, and accessibility. Expect roughly:

• Apartment 700 - 1,000 sqft: RM6,500 - RM11,000
• Single-storey terrace: RM9,500 - RM15,000
• Double-storey terrace: RM13,000 - RM22,000
• Semi-D / bungalow: RM22,000 - RM45,000+

Quotes below RM5,000 for a terrace house are a red flag — the contractor is usually skipping earthing, using under-spec cable, or not registered with ST.

Typical Timeline

• Apartment: 5 - 8 working days
• Single-storey: 7 - 10 working days
• Double-storey: 10 - 14 working days
• Bungalow: 14 - 21 working days

Rewiring is normally done with the family still living in the house — power is cut one zone at a time.

The 7-Step Process

1. Site survey + load calculation
2. Written quotation with circuit schedule
3. Apply for ST permit (Wiring PEC Form A)
4. Chase walls, install new PVC conduits
5. Pull new copper cable (2.5mm, 4mm, 6mm)
6. Install new DB with RCCB + proper earthing
7. Full insulation / megger test + ST certification

Things to Avoid

• Hiring an unlicensed handyman to save RM2,000 — your insurance will not pay out in a fire
• Skipping earthing on wet-area circuits
• Reusing old conduits "to save time"
• Allowing flat-rate quotes without a circuit schedule

If you live in PJ, our Petaling Jaya rewiring team provides free on-site inspections. Read our homepage for the full service list.

Conclusion

Full house rewiring is one of the most valuable investments you can make in an older Malaysian home. Done right, it is quiet, safe and lasts 30+ years. Done cheap, it becomes the silent cause of a future fire. Always insist on ST registration and a detailed circuit schedule.