California window replacement leads
Summit Leads supplies window replacement leads in California by real-time ping/post, exclusive by default, with ZIP code filters. California's residential energy code is a state standard, not an IECC edition: the 2025 Building Energy Efficiency Standards took effect January 1, 2026, per the DOE status page (checked October 7, 2026).
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California facts for window replacement lead buyers
| Fact | Value Source |
|---|---|
| Residential energy code | 2025 Building Energy Efficiency Standards, adopted December 17, 2024, effective January 1, 2026 (DOE, checked October 7, 2026)Building Energy Codes Program: California U.S. Department of Energy |
| License classification for glass and sash work | C-17 Glazing Contractor (CSLB, checked October 7, 2026)C-17, Glazing Contractor (licensing classification) Contractors State License Board |
| When a CSLB license is required | Projects needing a building permit, using employees, or totaling $1,000 or more in labor and materials (CSLB, checked October 7, 2026)Before Applying for the Examination Contractors State License Board |
| IECC 2021 climate zones by county | 3B in 25 counties, 3C in 14, 4B in 8, 5B in 6, 4C in 2, 6B in 2 and 2B in 1 (PNNL for DOE, 2021 county data)Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) Pacific Northwest National Laboratory for the U.S. Department of Energy |
| ENERGY STAR window climate zones | Spans more than one zone (map, August 2025)ENERGY STAR Windows, Doors and Skylights Climate Zone Map (August 2025) U.S. EPA ENERGY STAR |
| Median year structure built | 1976 (ACS 5-year 2020-2024)Table B25035, Median Year Structure Built: California (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Housing units built before 1980 | 56.0% (ACS 5-year 2020-2024, table B25034)Table B25034, Year Structure Built: California (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Median home value | $734,700 (ACS 5-year 2020-2024, table B25077)Table B25077, Median Value (Dollars): California (ACS 5-Year 2020-2024) U.S. Census Bureau |
Last reviewed: October 7, 2026. A summary for education, not legal advice.
California sets its own energy standards
This section is general information, not legal advice. It summarizes official sources as of October 7, 2026; check the current text of each rule before relying on it.
California's residential code is a state-written standard. The DOE Building Energy Codes Program page for California (checked October 7, 2026) lists the 2025 Building Energy Efficiency Standards for both homes and commercial buildings, adopted December 17, 2024 and effective January 1, 2026, and names the California Energy Commission as the adopting agency. DOE shows "No" under state amendments.
Dry and marine climate zones in California
California counties land in seven IECC zones in PNNL-33270 (2021 county data), the DOE county guide: 3B in 25 counties, 3C in 14, 4B in 8, 5B in 6, 4C and 6B in 2 each, and 2B in 1. In DOE's lettering B marks dry climates and C marks marine climates, and California has no county in an A (moist) zone.
California also covers more than one window zone on the ENERGY STAR climate zone map (August 2025). Buyers can confirm the zone for a coastal or inland ZIP code with the ENERGY STAR zone finder when assigning territory.
CSLB licensing for window installers
This section is general information, not legal advice. It summarizes official sources as of October 7, 2026; check the current text of each rule before relying on it.
The Contractors State License Board has a classification aimed at glass and sash work. Its C-17 Glazing Contractor description (checked October 7, 2026) covers selecting, cutting, assembling and installing glass and glass substitutes, and the fabrication and glazing of frames, panels, sashes and doors.
CSLB's applicant guidance (checked October 7, 2026) says a license is required when a project needs a building permit, uses additional workers, or totals $1,000 or more in labor and materials across one or more contracts, and that larger jobs may not be split to fall under that amount. Home solicitation cancellation and California's telemarketing statutes are covered on leads in California.
California homes: age and value
More than half of California's housing was built before 1980: 56.0% in table B25034 (ACS 5-year 2020-2024). The 1970s are the largest decade in that table with 2,458,155 units, and the median year built in table B25035 (ACS 5-year 2020-2024) is 1976.
Values are high. Table B25077 (ACS 5-year 2020-2024) reports a median value of $734,700 for owner-occupied California homes, and buyers who price jobs by home value can read it next to the window count.
Where California window buyers set filters
- ZIP code: separates marine and dry counties and sets the ENERGY STAR zone.
- Number of windows and scope: glass-only work versus frame and sash replacement, which ties to the C-17 description.
- Home age: the 1970s band is the largest, and build year helps sort requests.
- Homeowner status: the owner signs the contract with the licensed installer.
Where buyers filter in California
California's six largest metro areas are all inside the state, and the figures below are the Census Bureau's July 1, 2025 estimates. They include both coastal and inland regions. Buyers can draw a campaign around one metro area or a list of ZIP codes.
- Los Angeles-Long Beach-Anaheim: 12,844,441 (July 1, 2025 estimate)
- Riverside-San Bernardino-Ontario: 4,769,007 (July 1, 2025 estimate)
- San Francisco-Oakland-Fremont: 4,630,041 (July 1, 2025 estimate)
- San Diego-Chula Vista-Carlsbad: 3,282,248 (July 1, 2025 estimate)
- Sacramento-Roseville-Folsom: 2,477,274 (July 1, 2025 estimate)
- San Jose-Sunnyvale-Santa Clara: 1,984,473 (July 1, 2025 estimate)
Source: Metropolitan and Micropolitan Statistical Area population estimates, Vintage 2025 (cbsa-est2025-alldata), U.S. Census Bureau.
Consent records for California window replacement leads
Every California window lead carries the consent record created when the homeowner asked for a quote. California's calling statutes are summarized in the state telemarketing laws table, and the overview for California MVA and home improvement buyers is leads in California.
California window replacement lead questions
Does California use the IECC for its residential energy code?
No. DOE lists California's 2025 Building Energy Efficiency Standards, effective January 1, 2026, on its California status page (checked October 7, 2026). This is general information, not legal advice.
Which CSLB classification covers window glass and sash installation?
The C-17 Glazing Contractor classification, which includes fabricating and glazing frames, panels, sashes and doors. This is general information, not legal advice.
At what job size does California require a contractor license?
CSLB says a license is needed when a project needs a building permit, uses additional workers, or totals $1,000 or more, on its applicant page (checked October 7, 2026). This is general information, not legal advice.
Which IECC climate zones are found in California counties?
Seven: 2B, 3B, 3C, 4B, 4C, 5B and 6B, in PNNL-33270 for DOE (2021 county data).
Request California window replacement leads
Email us the California ZIP codes you cover, your daily volume or caps and how you take delivery. ReturnReturnA buyer's request for credit on a lead that fails agreed standards, such as a disconnected number, a duplicate or a lead outside the filters. Glossary terms are agreed on the onboarding call, before you go live.
Start small, with no long-term commitment
- No long-term contract. Pause or stop at any time.
- No setup fee and no monthly fee. You pay only for leads delivered that match your filters.
- Start with a small test volume and scale when the numbers work.
- MVA and home improvement leads are exclusive by default: each lead is sold to one buyer.
- Return terms are agreed on the onboarding call, before you go live.
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