Green Building Requirements

Community Development Agency

New State and local green building requirements went into place on January 1, 2020. You must comply with Title 19 Marin County Building Code, Subchapter 2 – Green Building Requirements.

For current project applicants after January 1, 2020, answer a few questions in the Green Building Decision-Making Tool to help determine the appropriate compliance checklist based on your project type and size. If you already know which checklist you need, you can view and download it in the Current Guide and Checklists for Unincorporated Marin County section of this webpage.

For project applicants issued issued a permit prior to January 1, 2020, you are using past building requirements. Go to the Past Requirements section of this webpage to view previous building requirements applicable to your project.

Please email Marin County's Green Building Program for more information or for green building technical assistance on any building project in unincorporated Marin County.

For general building and permitting questions, please visit the County of Marin's Building and Safety page.


Current Guide and Checklists for Unincorporated Marin County

All non-exempt projects must submit an Unincorporated Marin County Checklist AND a CalGreen Checklist.

Choose Your Project Type

CALGreen Checklists for Marin County

Construction & Demolition Reuse and Recycling Ordinance - C&D Ordinance

Applies To

All building and demolition permits.



Minimum of 65% construction and demolition material from project reused or recycled.

How to Comply

  • Submit Recycling & Reuse Plan form with permit application.
  • Pay fee on square footage of project.
  • Submit all disposal and recycling receipts at completion of project for release of Hold on Final Inspection.

Deconstruction Resources

Disposal of usable building materials wastes resources and landfill spaces and results in pollution when new building materials are manufactured in their place. Deconstruction involves removing of materials from buildings with care for the purpose of saving them for reuse.
More information on deconstruction can be found here:

Past Requirements (for permits submitted before January 1, 2020)

About Green Building in Marin County

Why Green Building?

Green Building is a whole systems approach to construction and building operations that minimizes the large impact that our built environment has on our environment. In addition to saving on utility cost and reducing carbon emissions, green buildings provide many co-benefits to occupants, landlords, and homeowners including long term value, reduced energy and water use, reduced maintenance, and a more comfortable and healthier indoor environment.

The State’s California Energy Commission (CEC) updates mandatory minimum energy efficiency standards for buildings statewide – also known as Title 24, Parts 6 and 11 – every three years. For more details and green building resources visit the CEC Building Energy Efficiency Standards website.

For Marin County, energy efficiency standards or green building energy requirements are also updated once every three years dating back to 2013. Marin County typically adopts more aggressive standards than the state minimum, in line with its progressive environmental history. These requirements are adopted into nonresidential and residential building codes for unincorporated Marin County. Incorporated jurisdictions, or Cities and Towns, within the county may have different green building requirements ranging from meeting the State’s mandatory minimum to more aggressive. It is up to each incorporated jurisdiction to adopt its own green building energy requirements.

The current text of the Green Building Requirements for unincorporated Marin County is located in Title 19 Marin County Building Code, Subchapter 2 – Green Building Requirements. It is important to note the definition of "Demolition" according to County of Marin Development Code Chapter 22.130.030: "Removal or substantial modification of more than 75 percent of the linear sum of a building’s exterior walls, counted for all stories, shall be considered demolition of the building." This triggers new construction requirements under the Green Building Requirements.

Marin County has other requirements that enhance the implementation of green building features. Currently, there is a Construction and Demolition Reuse and Recycling Ordinance and Low-Carbon Concrete Ordinance both required to comply with Title 19 Marin County Building Code.