Skip to main content
CityRuleLookup

Hawthorne, CA Building Safety: Green Building Code (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Adopted code
2022 CA Green Building Standards Code
Local name
'Sustainable green building program'
Legal basis
Govt. Code §§ 50020, 50022.1-.10
Scope
Energy, water, material, air quality
Federal limit
Can't exceed federal appliance standards
Adopting ordinance
Ord. 2239 § 12, 2023

Summary

Hawthorne enforces the 2022 California Green Building Standards Code as its 'sustainable green building program' under Hawthorne Code § 15.40.010, covering energy efficiency, water conservation, material efficiency, and environmental quality in every new planning, design, and construction project in the city.

Pursuant to the provisions of Government Code Sections 50020, and 50022.1 to 50022.10, inclusive ... the rules, regulations, provisions and conditions set forth in that certain code entitled "2022 California Green Building Standards Code" including the appendices therein contained, promulgated and published by the International Code Council and the California Building Standards Commission ... are hereby established and adopted as the rules, regulations, and provisions and conditions to be observed and followed in the planning, design, operation, construction, demolition, use and occupancy, operations and maintenance regarding the planning and design, energy efficiency, water efficiency and conservation, material conservation and resource efficiency, and environmental quality enhancement in the city ... the California Green Building Standards Code shall be designated, known and referred to as the "sustainable green building program" of and for the city. Nothing in this chapter shall require the applicant to use covered products ... that exceed any applicable federal energy conservation standards for such products.

Full Breakdown

10, as promulgated by the International Code Council and the California Building Standards Commission, with a filed printed copy on record with the city clerk. Hawthorne applies the adopted standards to the planning, design, operation, construction, demolition, use and occupancy, and ongoing operations and maintenance of buildings citywide, covering four mandated areas: energy efficiency, water efficiency and conservation, material conservation and resource efficiency, and environmental quality enhancement. C. , that exceeds the applicable federal energy conservation standard for that product, so a federal appliance-efficiency ceiling overrides any stricter local reading of the state Green Code.

The chapter was last readopted, along with the rest of Title 15's building codes, under Ordinance 2239, Section 12, in 2023. Because the Green Building Standards Code is folded into Title 15, compliance is checked at plan check and final inspection alongside the Building, Plumbing, and Electrical Codes rather than through a separate green-building permit track.

Violations & Fines

Compliance is verified during the same plan-check and inspection process as the rest of Title 15: under Section 15.75.010 the director of building and safety withholds permits and certificates of occupancy when a project does not meet the adopted Green Building Standards Code. A project built or altered without meeting the adopted green-code requirements is subject to Section 1.20.010's citywide misdemeanor penalty, a fine of up to $1,000, up to six months in jail, or both, with continuing noncompliance charged as a new offense each day.

Frequently Asked Questions

What does Hawthorne call its green building program?
Hawthorne designates the whole adopted 2022 California Green Building Standards Code, appendices included, as the city's 'sustainable green building program' under Section 15.40.010, and applies it to the planning, design, construction, demolition, use, occupancy, and ongoing operation and maintenance of every building project in the city, not just new single-family construction.
Can Hawthorne force me to install an appliance that beats federal efficiency rules?
No. Section 15.40.010 expressly says nothing in the chapter requires an applicant to use a covered product, as defined by the federal Energy Policy and Conservation Act, that exceeds the applicable federal energy conservation standard for that product, capping how far the city's green code can push manufacturers or homeowners beyond the federal ceiling.
Is green-building compliance checked separately from my building permit?
No. It runs through the same Title 15 process as the Building, Plumbing, and Electrical Codes: the director of building and safety checks Green Building Standards Code compliance at plan check and final inspection under Section 15.75.010, and can withhold your certificate of occupancy until the project conforms.

Sources & Official References

Other rules in Hawthorne

All Hawthorne rules

California rules heatmap·Compare Hawthorne to another location·View the California building safety overview

Get notified when Green Building Code in Hawthorne, CA changes

We'll email you the moment we detect a change in the code. No spam, unsubscribe anytime.

We'll never sell or share your email. One-click unsubscribe in every email.

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.

Green Building Code in Nearby Cities

How other cities in Los Angeles County handle green building code.

South Gate, CA
Light Restrictions
Downey, CA
Some Restrictions
El Monte, CA
Some Restrictions
Long Beach, CA
Some Restrictions
Carson, CA
Some Restrictions
Santa Clarita, CA
Some Restrictions
Pasadena, CA
Some Restrictions
Palmdale, CA
Some Restrictions