How much does ductwork replacement cost in California?

Ductwork Replacement in California typically costs $3,500 to $16,900, with most homeowners paying around $7,600.

California · HVAC

Ductwork Replacement cost in California

Statewide pricing, permit posture and inspection sequence for ductwork replacement in California. Your city or county issues the actual permit — use the local links below to confirm fees.

Model reviewed August 2026

Ductwork Replacement cost in California

$3,500 – $16,900

Most California homeowners pay around $7,600, or $350–$850 per supply run. Permit fees typically add $130–$465.

Permit: Yes. California Residential Code (Title 24, Part 2.5) plus the Title 24 energy standards

Cost breakdown

Budget scope	$3,500
Typical project	$7,600
Premium / complex	$16,900
per supply run	$350 – $850
Permit fees	$130 – $465
vs national baseline	+41%
Timeline	1-3 days of work, 1-3 weeks including permitting

What is different about ductwork replacement in California

Title 24 energy compliance, seismic detailing and the highest permit fees in the country make California the most expensive state to permit a project in, even before labor.

Owner-builder: Owner-builder permits allowed, with strict limits when the home is sold within a year. Ductwork Replacement generally requires a licensed contractor to pull the permit, even where owner-builder status is available.

Inspections

Duct rough-in
Duct leakage test
Final mechanical inspection

What drives the price

Number of supply and return runs
Flex duct versus rigid sheet metal
Attic access and clearance
Return air sizing corrections
Removal of contaminated duct board

Ductwork pricing by city

Ductwork cost in Sacramento$3,100 – $15,100 Ductwork cost in Fresno$2,800 – $13,500 Ductwork cost in Los Angeles$3,500 – $16,900 Ductwork cost in San Diego$3,400 – $16,500 Ductwork cost in San Jose$3,900 – $18,500 Ductwork cost in San Francisco$3,700 – $17,900 Ductwork cost in Long Beach$3,700 – $17,500 Ductwork cost in Oakland$3,700 – $17,500 Ductwork cost in Bakersfield$3,700 – $17,500 Ductwork cost in Anaheim$3,600 – $17,200 Ductwork cost in Riverside$3,600 – $17,200 Ductwork cost in Stockton$3,600 – $17,200

Permit difficulty by city

Hometriva Permit Complexity Index: review load, added discipline reviews, wind and flood overlays, and how each jurisdiction sets fees.

City	Complexity	Review time	Inspections
Sacramento	60/100 · Complex	5–19 days	4
Fresno	60/100 · Complex	5–19 days	4
Los Angeles	64/100 · Complex	5–20 days	4
San Diego	64/100 · Complex	5–20 days	4
San Jose	64/100 · Complex	5–20 days	4
San Francisco	76/100 · Very complex	6–24 days	4
Long Beach	76/100 · Very complex	6–24 days	4
Oakland	76/100 · Very complex	6–24 days	4
Bakersfield	76/100 · Very complex	6–24 days	4
Anaheim	76/100 · Very complex	6–24 days	4
Riverside	76/100 · Very complex	6–24 days	4
Stockton	76/100 · Very complex	6–24 days	4

What California homeowners reported paying

Invoice amounts submitted for this state, shown beside the model.

Rebates and incentives in California

What is still claimable, what expired, and where to check your own utility territory.

State home energy rebate programs (HEAR / HOMES)Varies by program

Federally funded, state-administered rebates for heat pumps, panel and wiring upgrades, insulation and whole-home retrofits. Availability, income tiers and funding depend entirely on the state program and can pause when a state's allocation runs out.

U.S. DOE — Home Energy Rebates

DSIRE — every California incentive by ZIPThe N.C. Clean Energy Technology Center database. The authoritative list of state, utility and local programs.
ENERGY STAR rebate finderUtility and manufacturer rebates by ZIP code for HVAC, water heating and appliances.
DOE Home Energy Rebates — California statusShows whether the state's HEAR/HOMES program is open, waitlisted or not yet launched.

Frequently asked questions

Do I need a permit for ductwork replacement in California?

In most jurisdictions this work is permitted and inspected. Requirements are set locally, so confirm the current application and inspection checklist with your building department before work starts.

How long does ductwork replacement take?

1-3 days of work, 1-3 weeks including permitting. Permit review and inspection scheduling are usually the largest source of variation.

What changes the price the most?

The largest cost drivers are number of supply and return runs; flex duct versus rigid sheet metal; attic access and clearance.

Sources

Sources & verification

Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.