Rewiring and renovation electrical work covers the jobs that go beyond a quick socket fix: replacing old wiring, upgrading a consumer unit or distribution board, adding circuits for a kitchen or air-conditioning extension, running new cabling through walls and ceilings before plastering, and bringing older terrace or apartment units up to current load requirements. In Johor Bahru this kind of work comes up a lot with older landed houses in areas like Taman Molek, Larkin, and Johor Jaya, where wiring may be decades old, and with renovation projects in newer developments where owners are adding rooms, splitting units, or fitting out shops and offices.
We list 10 businesses in this category. Because this work is done inside walls and under floors before finishes go on, it's harder to inspect later, so the choice of contractor matters more than for a simple repair.
What to look for before hiring
- Whether they pull proper permits and follow Suruhanjaya Tenaga (Energy Commission) wiring standards, not just "it works" wiring
- A clear scope: how many points, what cable size and type, whether trunking or conduit is used, and whether the consumer unit or main switchboard is being upgraded
- Experience with your building type: old landed houses, high-rise units, and commercial shoplots each have different wiring paths and load issues
- A written quote broken down by material and labour, not a single lump figure
- Willingness to coordinate with your contractor or renovation timeline, since electrical work usually has to happen before hacking and plastering close up
Our scoring looks at how consistently a business delivers this kind of structural electrical work, based on the pattern of feedback across jobs rather than a single review. See the methodology for how we weigh that. For the full ranked list with scores side by side, go to the best electricians in Johor Bahru guide.
