Planning a home project in California? This page brings together every cost guide we publish for the state — installed prices, yearly savings and payback for 2026 — plus the verified California rebate programs that can cut the bill.
In California, the mild but rate-sensitive energy market shapes the energy year, and installation work here runs about 27% above the national average — both are built into every range below.
Published California Guides
Home Project Costs in California at a Glance
| Project | Typical cost in California | Yearly savings | Simple payback | Guide |
|---|---|---|---|---|
| Central AC Replacement | $6,250–$12,500 | $280 | 33.5 years | Coming soon |
| Heat Pump | $8,300–$19,750 | $645 | 21.7 years | Coming soon |
| Attic Insulation | $1,800–$4,150 | $360 | 8.3 years | Read the guide |
| Roof Replacement | $9,750–$23,450 | $50 | — | Coming soon |
| Solar Panels | $18,950–$28,100 | $2,890 | 8.1 years | Coming soon |
| Tankless Water Heater | $3,150–$5,850 | $110 | — | Coming soon |
| Replacement Windows | $7,500–$15,600 | $260 | 44.4 years | Coming soon |
Verified Rebates & Incentives in California
- SMUD Heating & Cooling Rebate — Up to $3,000 for a gas-to-electric heat pump conversion ($1,000 for electric-to-electric). SMUD (Sacramento) customers; participating contractor required and funding is limited. Covers: Heat Pump. Source: SMUD (via 2026 California rebate guide)
- LADWP Heat Pump Rebate — $1,000-$2,500 per ton depending on equipment efficiency. Los Angeles DWP customers; amount varies by system type and efficiency tier. Covers: Heat Pump. Source: LADWP (via Heat Pump Economics state guide)
Amounts and rules change — confirm eligibility with the program before you sign a contract, and note that several programs require action before installation.
Figures compiled from public sources, updated October 2026. Local quotes vary — get 2–3 estimates.