Generator Installation: What It Costs and How to Choose a Provider

What's included

Load calculation and sizing, equipment placement and mounting, electrical wiring to an automatic transfer switch, gas-line hookup (natural gas/propane) or fuel-tank setup, permit filing and inspection coordination, and startup testing.

Typical cost

$3,000–$5,000 in labor alone, on top of the $2,000–$10,000+ generator unit itself.

Actual pricing varies by home, region, and system size, this is a general range, not a quote. Get quotes from at least two or three license-checked local installers for a number specific to your situation.

How to choose

Confirm the installer is licensed in your state, ask whether they handle permit filing directly (many don't, which shifts that burden to you), and get the load calculation in writing before agreeing to a unit size.

Questions to ask before signing

• Is your license current, and can I verify it independently?
• Who pulls the permit, you or me, and is that included in the quote?
• What does the workmanship warranty cover, separately from the manufacturer warranty?
• What's the expected timeline from signing to completed, inspected work?
• Is the estimate itemized, or a single lump-sum number?

Warning signs to watch for

• Reluctance to provide a license number or discuss permitting at all.
• Pressure to sign the same day, or pricing that's only available "today."
• No written contract, or a contract with no itemized scope of work.
• Requests for full payment upfront, before any work has started.

Frequently asked questions

What does generator installation typically cost?

$3,000–$5,000 in labor alone, on top of the $2,000–$10,000+ generator unit itself.

How do I choose a provider?

Confirm the installer is licensed in your state, ask whether they handle permit filing directly (many don't, which shifts that burden to you), and get the load calculation in writing before agreeing to a unit size.