Local research · updated July 2026

Casement windows in Modesto, California

Side-hinged sash that cranks outward like a door. For Modesto's mixed-age housing stock (55.3% of homes predate 1980), casement window replacement is a common project — and in the ENERGY STAR South-Central zone, the number that matters most is a low SHGC (≤ 0.23) to block solar heat.

Short answer

Casement windows in Modesto typically cost $585–$2,650 installed per opening. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand.

NREL REMDB + BLS PPI, localized to Modesto (BEA Regional Price Parity, 2024). How we estimate →

$585–$2,650

installed range per opening for Casement window, from a mid-grade insert up to a premium or full-frame job

Source: NREL REMDB + BLS PPI, localized to Modesto

55.3%

of Modesto homes were built before 1980

Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates

SHGC ≤ 0.23

the ENERGY STAR v7.0 number that matters most in the South-Central zone

Source: EPA ENERGY STAR v7.0

Is a Casement window right for a Modesto home?

Crank handle swings the full sash outward; locks compress the seal.

Where it fits:

  • Maximum ventilation — the whole opening opens
  • Tightest air seal of the common operable styles (compression seal)
  • Hard-to-reach placements like over kitchen sinks

What to weigh:

  • Projects outward — check clearance to walkways and screens
  • Hardware is the wear item; crank quality matters
  • Width limits — very wide openings need mulled units

Casement windows and Modesto's climate

Modesto sits in the ENERGY STAR South-Central zone (IECC zone 3B (warm, dry), Stanislaus County), where the priority is a low SHGC (≤ 0.23) to block solar heat.

A casement closes against a compression seal, the tightest of any operable window — good for holding conditioned air inside through a long South-Central-zone cooling season.

New to these numbers? See our plain-English guide to U-factor and SHGC and the full casement guide.

What Casement windows cost in Modesto

Casement window replacement in Modesto runs $585–$2,650 installed. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand. Central Valley labor is below coastal California. Title 24 paperwork and low-SHGC packages add cost; tract homes often take flush-fin retrofits. Federal 25C is gone. Itemize NFRC U-factor and SHGC.

That's the national range shifted to Modesto's cost level using the BEA Regional Price Parity for Modesto, CA (104.1, U.S. = 100; 2024). How we estimate local costs →

For a breakdown by frame material and install type, see our full cost guide.

Installers serving Modesto

A sample of companies with locations in the Modesto market. See the full Modesto directory for all listings, our map, and featured-partner disclosures.

✓ Top PickPremier Partner

Renewal by Andersen of San Francisco

Renewal by Andersen4.8 · 200,000+ reviews

Hayward, CA showroom · serving the Modesto metro

Full-service manufacturer and installer, transferable warranty, local crews. Why it's our Top Pick

Get a quote →

Listings compiled from manufacturer dealer locators and public business records. Premier and Sponsored Partners pay for placement and are labeled as such; star ratings shown are reported by the partner, with the source and date beside them. See our advertising disclosure. Contacting a company shares your details with it (or a vetted local installer) so it can reach you about your project.

Are you a window company? Claim your listing to take quote requests from Modesto homeowners directly.

Rebates & incentives in California

The federal window tax credit (25C) ended for projects placed in service after December 31, 2025. If your windows were installed in 2025, you can still claim it on your 2025 return — but for new projects there is no federal window credit. State and utility programs are now the main source of window incentives.

California's IRA rebates run through the California Energy Commission. The HEAR-funded HEEHRA program (delivered via TECH Clean California / The Switch Is On) launched for income-eligible households, but Phase I single-family rebates were fully reserved statewide as of early 2026, with a waitlist and a Phase II in design. HOMES funds are being routed into the Equitable Building Decarbonization Direct Install program and a Pay-for-Performance program that were not yet issuing rebates as of mid-2026. Confirm current availability first. See our Modesto guide for the full program list.

Casement windows in Modesto: FAQ

›What efficiency numbers should a Casement window in Modesto meet?

Modesto sits in the ENERGY STAR South-Central zone (IECC 3B (warm, dry)). Qualifying units need a U-factor of 0.28 or lower and an SHGC of 0.23 or lower. A casement closes against a compression seal, the tightest of any operable window — good for holding conditioned air inside through a long South-Central-zone cooling season.

›How much does Casement window replacement cost in Modesto?

A useful planning range for Casement window replacement in Modesto is $585–$2,650 installed. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand. Central Valley labor is below coastal California. Title 24 paperwork and low-SHGC packages add cost; tract homes often take flush-fin retrofits. Federal 25C is gone. Itemize NFRC U-factor and SHGC.

›Do I need a permit to replace Casement windows in Modesto?

Replacement generally requires a permit, and new units must meet the current energy code. See our Modesto guide for local permitting and rebate details, and always confirm your installer pulls the permit.

Sources

  • — U.S. Census Bureau, American Community Survey 5-Year Estimates (B25034, B25035)
  • — EPA ENERGY STAR Version 7.0 Residential Windows specification
  • — DOE/PNNL IECC climate zone assignments by county
  • — NREL residential window cost analysis (planning ranges)