Generator for New Construction

Pricing reviewed October 2026

Plan the transfer switch location, gas line sizing, generator pad placement (code clearances from windows and doors) and conduit runs before drywall. Builders often price this as an upgrade.

Know your size? Price it with the home generator cost calculator · Compare brands: Kohler vs. Generac.

Generator figures marked as from the 2026 cost guide (whole-house generator $6,000–$25,000 installed, typically $10,000–$15,000; unit $3,000–$6,000; installation $3,000–$5,000; 10–14 kW $6k–$10k, 18–26 kW $10k–$15k, 26+ kW $15k–$25k) come from the HomeGeneratorCost 2026 guide. Add-on ranges, load wattages and city factors are editorial estimates. Get written quotes from licensed installers.