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New Construction Wiring on Oahu

Code-compliant rough-in, panel sizing, and trim-out for new builds, additions, and ADUs across Aiea, Honolulu, Kailua, and Kaneohe.

New Construction Wiring

Wiring Done Before Drywall Goes Up

New construction wiring is where good electrical work earns its money — because once the drywall’s up, fixing mistakes gets expensive fast. Whether you’re building a new home in Áiea Heights, putting an ADU in your Kaneohe back yard, or adding a primary suite to an existing Honolulu home, the rough-in phase sets up everything that comes after.

Sparky and Sons does full new-construction electrical — service entrance through HECO, panel sizing for current and future loads, branch circuit layout, every box, every wire, every termination. We coordinate with your GC, framer, and plumber so we’re not in each other’s way.

For ADUs especially (a huge growth area on Oahu since the relaxed rules), we know the City & County permitting requirements cold. Separate panel or sub-panel? Dedicated meter or tap from main? We’ll lay it out before you commit to a design.

New construction electrical rough-in by Sparky and Sons in an Oahu build

What’s Included

Every new construction wiring job covers the same scope — here’s exactly what you’re getting when you book us.

✓
Service entranceHECO disconnect, meter base, weatherhead, mast — permitted and inspected.
✓
Main panel sizing100A, 200A, 400A — sized for actual load plus headroom for future EVs and AC.
✓
Branch circuit rough-inEvery outlet, switch, light, fan, and appliance circuit run before drywall.
✓
Smoke & CO interconnectHardwired interconnected smoke and CO detectors per current code.
✓
Low-voltage rough-inCat6 data, RG6 coax, speaker wire, alarm — if you want it, we run it.
✓
Trim-out & final inspectionDevices, fixtures, panel directory, and walking the inspector through.

How It Works

Four steps from first call to written warranty. No surprises along the way.

01

Plan Review

Sit with your plans, mark every device, size the panel, coordinate with GC.

02

Permits & HECO

Pull permits, schedule HECO meter and disconnect appointments.

03

Rough-In

All wire, boxes, panel, and meter set before insulation and drywall.

04

Trim & Inspect

Devices, fixtures, panel labeled, ready for inspector sign-off.

Why Sparky

✓

Plan Reading

We work from your blueprints, not guesses. Coordinated with framer, plumber, GC.

★

Future-Proofed

Panel sized for tomorrow’s EV charger, heat pump, and induction range.

⚡

Permitted & Inspected

Every job permitted, inspected, and signed off so you close cleanly.

Frequently Asked Questions

Do I need a separate panel for my ADU?
Depends on whether you have a separate meter and what the City permits. We’ll review your plans and tell you.
What size panel should a new build have?
For most modern Oahu homes we recommend 200A minimum, often 225A or 400A if EV chargers and heat pumps are planned.
How long does rough-in take?
A typical 3-bedroom new build is 4–6 working days for rough-in, plus 2 days for trim-out after drywall and finishes.
Do you handle the HECO coordination?
Yes — we handle the permit, the HECO new service application, and the timing so it lines up with your GC schedule.

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Get a Free New Construction Wiring Quote

Written quote on the first visit. No surprise charges, no salesman act — just a licensed electrician answering your questions.

Power My Project → ☎ (808) 342-8195

Ready to Get Started?

Contact Sparky and Sons LLC today for a free, no-obligation quote. We look forward to working with you.