Electrical
rewiring in Pretoria.
Old wiring does not just fail your COC, it puts your family at risk. Aluminium conductors, cracked insulation, and undersized cables are ticking time bombs in thousands of Pretoria homes. We replace them with modern copper wiring that meets every requirement of SANS 10142, with minimal disruption and a full COC on completion.
When you need it
Does your home need rewiring?
Five situations where a rewire is the right call, not a patch.
Aluminium Wiring
Many South African homes built between the 1960s and 1980s were wired with aluminium. It was cheaper, but aluminium oxidises at connection points, expands and contracts more than copper, and has a higher resistance. Over time, the connections loosen, overheat, and become a fire hazard. If your home has aluminium wiring, a rewire is not optional, it is necessary.
Installation Over 30 Years Old
PVC cable insulation degrades over decades, especially in hot roof spaces where Pretoria summer temperatures push 40+ degrees. Brittle, cracked insulation exposes copper conductors that can short against each other, against conduit, or against anything conductive nearby. If your wiring has never been replaced and the house is 30+ years old, the insulation is almost certainly compromised.
Frequent Electrical Faults
If you are constantly calling an electrician for tripping breakers, dead circuits, or flickering lights on different parts of the installation, the problem is likely systemic, not isolated. Patching individual faults on degraded wiring is throwing money at a problem that will keep coming back. A rewire solves it permanently.
Major Renovation or Extension
If you are renovating your Pretoria home, opening up walls, adding rooms, or converting a garage, it is the ideal time to rewire. The walls are already open, which dramatically reduces the cost and disruption. Trying to connect modern circuits to old wiring creates mismatched cable sizes, incompatible insulation types, and a headache for any future COC inspection.
Failed COC Inspection
When a COC inspection reveals multiple non-compliances across different circuits, poor insulation readings, missing earth conductors, incorrect cable sizes, the repair bill can approach the cost of a rewire. At that point, a full rewire gives you a completely new, fully compliant installation with a fresh COC, rather than a patchwork of repairs on ageing cables.
Rewire types
Three kinds of rewire jobs
Full, partial, or upgrade. We recommend the right scope after a proper assessment.
Full Rewire
Every cable in the house is replaced, from the main supply to every light, plug, stove, geyser, and DB board connection. This is the right choice when the existing wiring is aluminium, severely degraded, or so old that patching individual circuits no longer makes economic sense.
Partial Rewire
We replace specific circuits or sections of the installation while leaving sound wiring in place. Common when only the lighting circuit has failed insulation testing, or when one wing of the house has degraded wiring while the rest is still in good condition.
Upgrade Rewire
The existing cable routes are sound, but the cable sizes and types need upgrading to handle modern loads. This includes increasing cable sizes for high-draw circuits, adding dedicated circuits for appliances that did not exist when the house was built, and bringing the installation up to current SANS 10142 standards.
Process
How a rewire works
Six stages, typically across 5–10 working days for a standard home.
On-Site Assessment
We inspect every accessible cable run, test insulation resistance on all circuits, and assess the overall condition of your installation. We check the roof space, DB board, and sample junction boxes. You get a detailed report and a fixed-price quote.
Planning & Scheduling
We plan the cable routes, determine where chasing is needed versus where we can use existing conduit or ceiling space. We agree on a schedule that minimises disruption, for occupied homes, we work room by room to keep essential power available.
Cable Installation
We run new cables through the ceiling space and wall conduits, chasing walls only where necessary. All cables are correctly sized per SANS 10142, 2.5mm for plug circuits, 1.5mm for lighting, 4mm or 6mm for geysers and stoves. Every joint is made in accessible junction boxes.
DB Board & Connections
A new DB board is installed with correctly rated MCBs for each circuit, earth leakage protection, and surge arrestors. All circuits are terminated, connections torqued to specification, and the board clearly labelled.
Testing & Certification
Every circuit is tested for insulation resistance, continuity, polarity, and earth fault loop impedance per SANS 10142. We verify that all protective devices trip within the required disconnection times. Once everything passes, we issue your Certificate of Compliance.
Making Good
Any chased walls are plastered and left with a smooth finish ready for painting. We clean up completely, no cable offcuts, no plaster dust, no mess. Your home looks like we were never there, except for the new plug points and switches.
Pricing
Rewire pricing
Fixed-price quote after a proper on-site assessment. No surprises.
3–4 Bedroom House
Full rewire of a standard Pretoria home including new DB board, all circuits, accessories, and COC. The most common job size we do.
- All circuits rewired in copper
- New DB board with MCBs & RCD
- New plug points & light switches
- Wall chasing & plastering included
- Full SANS 10142 testing
- COC certificate issued
Large / Complex Home
For larger properties, double-storey homes, outbuildings, or installations with multiple sub-boards and three-phase supply.
- Everything in standard rewire
- Multiple sub-board installations
- Three-phase distribution
- Outbuilding & cottage wiring
- Underfloor heating circuits
- Gate motor & security circuits
All prices exclude VAT
Your house, your walls
What happens to your walls and ceilings
This is the question every homeowner asks, and rightfully so. Nobody wants their house torn apart. Here is exactly what to expect:
Most cable in a South African home runs through the roof space, that is the main highway for electrical cables. We access it through the ceiling hatch and run new cables along the trusses. This part of the job causes zero damage to your ceilings or walls.
The vertical drops, from the ceiling space down to your plug points, light switches, and the DB board, require chasing. We cut a neat channel in the plaster, run the cable, and plaster it smooth. In older Pretoria homes with solid brick walls, these channels are typically 25mm wide and 25mm deep. We use a wall chaser with dust extraction to keep the mess contained.
Where existing conduit is in good condition, we pull new cable through it and avoid chasing entirely. We always check conduit condition first and reuse it wherever possible, it saves time, money, and your walls.
All chased walls are plastered flush by our team and left with a smooth finish ready for painting. We do not paint, that is a different trade, but we leave the surface properly prepared. Most homeowners plan a repaint as part of their renovation, which covers the plaster repairs perfectly.
FAQ
Frequently asked questions
Cost, duration, disruption, and whether you can stay in the house. The practical stuff.
Service Areas
Serving Pretoria & Gauteng
15 suburbs covered
Other Services
You might also need
DB Board Upgrade
Every rewire includes a new DB board. If your wiring is sound but the board is outdated, this may be all you need.
View detailsElectrical Fault Finding
Not sure if you need a rewire? Fault finding will tell us whether the issue is localised or systemic.
View detailsCOC Inspections
A COC inspection gives you a clear picture of your installation's condition and whether rewiring is necessary.
View details
Ready When You Are
Rewire it right,
once.
Modern copper, SANS 10142 compliant, minimal disruption. A fresh COC on completion.
072 681 4615