Whanganui's heritage homes often have original or early-replacement electrical boards that can't safely support modern loads. Board upgrades are commonly discovered during renovation work. Here's what switchboard upgrades cost in Whanganui in 2026.
Whanganui Switchboard Upgrade Costs 2026
| Service | Whanganui typical cost |
|---|---|
| Standard upgrade (single-phase) | $1,800–$3,800 |
| Complex upgrade (three-phase or rewire) | $2,800–$5,500 |
| Add RCD to existing board | $270–$560 |
| Add circuit breaker | $170–$360 |
| Board inspection / report | $165–$325 |
All prices GST inclusive. Broadly regional.
Whanganui Switchboard Market
Whanganui's heritage homes often have original or early-replacement electrical boards that can't safely support modern loads. Board upgrades are commonly discovered during renovation work.
When You Need an Upgrade
Your home likely needs a switchboard upgrade if it has ceramic fuse holders, no RCDs (safety switches), or if you're adding an EV charger, solar, heat pump, or induction cooktop. Must be done by a registered electrician who issues an Electrical Certificate of Compliance.
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Related: Electricians Whanganui | EV Charger Installation Whanganui