How to Write an Electrical Estimate

A panel upgrade estimate has to survive two things: the homeowner comparing it to another bid, and an inspector checking the work against it. Here’s how to write an electrical estimate that holds up to both.

1. Name the job like you’d explain it to an apprentice

“Swap a 100A panel for 200A service, bring grounding up to code, coordinate the permit.” That’s the scope. Everything else is breaking it into priced lines an inspector and a homeowner can both follow.

2. Split panel, breakers, grounding, and labor into separate lines

Labor — panel swap, rewire, permit coordination, priced at your rate.
Materials — the panel, breakers, and grounding kit, priced at cost plus markup.
Permit — named on its own line, not buried in labor.

A lump-sum “panel upgrade — $1,480” tells the homeowner nothing and gives the inspector nothing to check against. Broken out, it’s a document that does both jobs.

3. Write your load assumptions down, not just in your head

If an EV charger or a hot tub is on the horizon, say what you assumed today. “Panel sized for current load; EV charger circuit quoted separately” is one sentence that prevents an argument next spring when the assumption gets tested.

4. Put your license number on the document

Half of what a homeowner is buying, especially on electrical work, is the confidence you’re the real thing. Your license number on the estimate — not just on the truck — is part of what closes the job.

5. Offer tiers when the job allows it

Panel upgrades, EV chargers, and remodel rough-ins are exactly the jobs where good-better- best works. One tap to show three options beats a phone call explaining the difference between them.