Wiring decisions are cheap before the walls close and expensive after. Here is what happens at each fix.

First fix is everything electrical that gets buried: conduits, back boxes, cable runs and the distribution board position, done before plastering, ceilings, tiling and carpentry close the walls. Second fix is everything you see: sockets, switches, light fittings and final connections at the board, done after painting, followed by testing. The expensive mistakes happen when layouts change after first fix. ClickBina's partition wall guide notes that a conduit sleeve left in a new wall costs about RM50 and saves RM500 or more later (indicative 2026, Klang Valley).
| First fix | Second fix | |
|---|---|---|
| When | After hacking, before plaster, ceilings, tiles and carpentry | After painting and carpentry are finished |
| What goes in | Conduits, back boxes, cable pulls, ceiling cable drops, board position | Sockets, switches, light fittings, fan points, final board connections |
| What you check | Every position against the drawing, before it is covered | Every point works, and the installation is tested |
| Cost of a change | Low: move a box before the wall closes | High: chase walls, patch plaster, repaint or re-tile |
ClickBina's renovation process and timeline guide puts electrical first fix alongside plumbing rough-in early in the job, and second fix after the carpentry, with painting and fittings after that. The order matters because each trade covers up the work before it.
First fix fixes positions. Anything not decided by then becomes a change later. Before the electrician starts, have these settled on a drawing:
ClickBina's socket placement rules guide covers the distances from water and gas, which appliances need their own connection and where cables may run.
A simple way to prepare is to walk each room with the furniture plan and ask where you will charge a phone, plug in a laptop, stand a fan and switch on the lights when you walk in and when you are in bed. Mark every answer on the drawing. Count sockets generously: it costs far less to add a point at first fix than to live with extension leads for years, and far less again than chasing a finished wall once the paint is dry and the furniture is in.
A conduit left empty is cheap insurance. The partition wall guide's example is a conduit sleeve for about RM50 during construction, against RM500 or more to chase a finished wall later.
This is your one chance to catch mistakes cheaply. Walk the site with the drawing before plaster, ceiling boards, tiles or cabinets go in:
Between first and second fix, the other trades do their work: plastering and skim coat, plaster ceilings, tiling, carpentry and painting. Each one can damage or bury electrical work, so protect back boxes, keep cable ends labelled and out of the way, and make sure carpenters know where the points are before they cut openings. ClickBina's concealed aircon piping guide makes the same point for aircon: if the aircon contractor only arrives after the painters, it is too late to conceal anything without hacking.
Ask for the board to be labelled clearly, circuit by circuit. It saves time every time a breaker trips.
| Mistake | What it causes | How to avoid it |
|---|---|---|
| Layout changed after first fix | Chasing finished walls, patching and repainting | Freeze the furniture and kitchen layout before first fix |
| Cabinet drawings arrive late | Sockets hidden behind cabinet sides | Get the carpenter's drawing before the electrician starts |
| No ceiling drops | Surface wiring or cutting the new ceiling | Mark every light and fan on the ceiling plan |
| Too few sockets | Extension leads everywhere | Plan sockets for every desk, bedside and TV wall |
| No record of cable routes | Drilling into cables later | Keep a marked-up drawing or video |
These are ClickBina's published ranges (indicative 2026, Klang Valley). The number of points and the length of the runs decide the total.
| Item | Indicative price | Source guide |
|---|---|---|
| New wiring point or lighting circuit | RM120 – RM250 per point | Lighting design guide |
| Recessed LED downlight, supply and install | RM60 – RM150 per point | Lighting design guide |
| Dimmer switch | RM80 – RM200 per switch | Lighting design guide |
| Rewire a kitchen with dedicated circuits | RM2,000 – RM5,000 | House rewiring cost guide |
| Install or upgrade the distribution board | RM1,500 – RM3,500 | House rewiring cost guide |
WhatsApp us your job details for a quote — we reply within the hour.
💬 WhatsApp for a quoteOlder houses may need more than new points. ClickBina's house rewiring cost guide explains when a full rewire makes sense.
WhatsApp us your job details for a quote: the rooms being renovated, the kitchen layout, and how many points you think you need. ClickBina is an experienced KL & Selangor contractor for whole-house refurbishment and trade coordination, which includes getting the trades in the right order. We reply within the hour, and the price we agree is a flat price with no hidden charges. A site visit is RM150, waived if you go ahead.
How we estimated prices: every RM figure on this page is quoted unchanged from the ClickBina guides named above; they are indicative Klang Valley ranges for 2026.
WhatsApp us your job details for a quote — we reply within the hour.
💬 WhatsApp for a quoteTell us what you need — we reply within the hour.