How to Budget Electrical Renovations Properly

A renovation budget can look settled until the walls come off. An old switchboard, undersized circuits, undocumented wiring or a changed kitchen layout can quickly alter the electrical scope. Knowing how to budget electrical renovations means allowing for the work you can see, the compliance work you cannot skip, and sensible room for what an older property may reveal.

For homeowners, landlords and small businesses, electrical work should not be treated as a final cosmetic expense. It affects safety, approval requirements, the way a space functions and the cost of correcting mistakes later. A clear budget starts with a clear plan and a licensed electrical contractor who can explain what is included.

Start with the renovation plan, not a rough allowance

Electrical pricing depends on access, existing infrastructure and the number of circuits, outlets and fixtures required. A broad allowance made before the layout is final often leads to variations, especially in kitchens, bathrooms, laundries, home offices and commercial fit-outs.

Before requesting a quote, finalise as much of the following as practical: room layouts, cabinetry plans, appliance locations, lighting selections, data needs and any air conditioning, solar, battery or electric vehicle charging plans. Even small changes matter. Moving an island bench after wiring has been installed, for example, can mean additional cabling, labour and repairs to completed surfaces.

It is also worth thinking beyond the immediate renovation. If you expect to add a pool, workshop, induction cooktop, second storey or EV charger in the next few years, mention it early. The most economical time to allow capacity for future work is often while ceilings, walls and trenches are already open.

Build your electrical renovation budget in sections

A useful budget separates the project into distinct parts rather than relying on one figure labelled ‘electrical’. This makes quotes easier to compare and helps identify which choices are essential, optional or suitable for a later stage.

Existing installation assessment

Allow for an inspection of the current installation before final pricing where possible. In established Perth homes, the condition and capacity of the existing switchboard can influence the entire job. An electrician may identify outdated protective devices, insufficient circuit capacity, earthing concerns, deteriorated cabling or previous alterations that need attention.

This is not an attempt to add unnecessary work. Renovation work can expose issues that were hidden behind walls or only become relevant once new loads are connected. A realistic budget recognises that retaining old infrastructure is not always the lowest-cost or safest option.

Switchboard and protection upgrades

A switchboard upgrade can be a significant line item, but it may be necessary to support additional circuits and modern protection requirements. Larger renovations often increase electrical demand through appliances, lighting, air conditioning and power outlets.

Ask whether the proposed scope includes the switchboard, safety switches, circuit breakers, labelling and any required testing. Also ask whether the incoming supply has sufficient capacity for the planned work. The answer will depend on the property and the electrical loads being added, so it should be assessed rather than assumed.

Rough-in, fit-off and access

Most electrical renovation work occurs in two stages. Rough-in takes place while framing and wall cavities are accessible. Cables, mounting points and conduits are installed before lining, plastering or cabinetry. Fit-off happens later, when outlets, switches, lights, appliances and other visible items are connected and tested.

Make sure both stages are included in your budget. Access has a direct effect on labour. Work carried out in open wall cavities is generally more straightforward than work requiring careful access through finished ceilings, tiled surfaces or concrete. If the home will remain occupied during the renovation, allow for the added time needed to isolate areas, protect finishes and maintain safe temporary power.

Fixtures, appliances and specialist systems

Set a separate allowance for the items you select. This may include lighting, ceiling fans, exhaust fans, dimmers, outdoor fittings, power points, USB outlets, data points, smoke alarms, appliance connections and smart controls.

The supply cost is only part of the equation. A decorative pendant may need extra support, a bathroom fan needs suitable placement and ducting, and a high-load appliance may require a dedicated circuit. Give your electrician the model details for ovens, cooktops, hot water systems, air conditioners and other fixed equipment before installation. This avoids budgeting for a connection that does not match the appliance requirements.

Include compliance as a fixed project cost

In Western Australia, electrical installation work must be completed by appropriately licensed electrical contractors. Budgeting for compliant work is not an optional upgrade. It includes correct installation methods, testing, documentation and the issue of relevant certification for completed electrical work.

Be cautious of a price that is substantially lower than comparable quotes without a clear explanation. It may exclude items such as switchboard modifications, testing, certificates, disposal, access equipment or making good after electrical work. A detailed written scope is more useful than a low headline figure.

For safety-critical work, check that your contractor is licensed and insured. Burrows & Co. Electrics operates under WA Electrical Contractor Licence EC-17326 and can explain the scope before work begins. Direct communication matters when decisions need to be made quickly during a renovation.

Keep a contingency for hidden conditions and changes

A contingency is not a sign of poor planning. It is a practical response to the uncertainty of renovation work. The right amount depends on the age and condition of the property, how much of the building will be opened up, and whether the scope is fully documented.

Older homes, extensions completed at different times and properties with limited records usually justify a larger contingency. You may need it for concealed junctions, damaged cable, difficult access, asbestos-related coordination, supply limitations or changes requested after rough-in.

Keep this amount separate from your wish-list budget. A contingency is there for genuine site conditions and necessary changes, not for upgrading every fitting once construction is underway. If it is unused, that is good news. If it is needed, it prevents the project from being delayed or compromised.

Compare quotes by scope, not just total price

When reviewing electrical quotes, compare like with like. One contractor may include supply and installation of fittings, while another may allow only for labour and basic connection points. One may have priced for a switchboard upgrade and another may have assumed the existing board is adequate.

Ask each contractor to clarify the number and location of power points, light points, switches, circuits and data points included. Confirm whether fixtures are supplied or owner-provided, whether appliance connections are included, and whether there are allowances for access, patching or after-hours work if the site is a business.

For commercial renovations, also consider operational disruption. Electrical isolation, temporary power, emergency lighting, data systems and access around staff or customers can all affect the programme and cost. The cheapest option can become expensive if it creates avoidable downtime.

Reduce costs without cutting corners

The best savings come from better coordination, not from reducing protection or choosing unqualified work. Lock in the layout before rough-in, group decisions together and provide appliance specifications early. Where possible, schedule electrical work alongside demolition, framing, plastering and cabinetry so trades are not returning unnecessarily.

You can also prioritise work in stages. Safety upgrades, essential circuits and compliance items should come first. Decorative lighting, smart home features or additional outdoor power can sometimes be planned and installed later, provided the necessary pathways or capacity are sensibly allowed for during the main renovation.

Do not assume that reusing old fittings or keeping every existing outlet will save money. Some existing equipment may be unsuitable for the new layout or may cost more to adapt than to replace. Your electrician should be able to explain the trade-off in plain English.

Questions to ask before approving the work

A short discussion before work starts can prevent most budget surprises. Ask what the quote includes and excludes, what assumptions have been made about the existing installation, and what conditions could trigger a variation. Confirm who supplies fixtures and appliances, how changes will be approved, and when rough-in, fit-off, testing and certification will occur.

It is also sensible to ask how the contractor will protect occupied areas and manage outages. If your renovation involves a rental property or business premises, clear timing and communication are especially valuable.

A sound electrical budget does more than control spending. It gives you the confidence to make decisions before walls are closed, while there is still time to build a safer, more useful and compliant space.