The 2016 CalGreen Residential Requirements Summary

The Actual CalGreen Code Requirements

The CalGreen Code

             The 2016 CalGreen Code

The following summarizes the key requirements of the 2016 CalGreen Residential Code. If you would like even more detail, see the link at the end of this page to the online version of the 2016 CalGreen Code.

Section 4.106

Site Development

4.106.1 General. Preservation and use of available natural resources shall be accomplished through evaluation and careful planning to minimize negative effects on the site and adjacent areas. Preservation of slopes, management of storm water drainage and erosion controls shall comply with this section.

4.106.2 Storm water drainage and retention during construction. Projects which disturb less than one acre of soil and are not part of a larger common plan of development which in total disturbs one acre or more, shall manage storm water drainage during construction. In order to manage storm water drainage during construction, one or more of the following measures shall be implemented to prevent flooding of adjacent property, prevent erosion and retain soil runoff on the site.

    1. Retention basins of sufficient size shall be utilized to retain storm water on the site.
    2. Where storm water is conveyed to a public drainage system, collection point, gutter, or similar disposal method, water shall be filtered by use of a barrier system, wattle or other method approved by the enforcing agency.
    3. Compliance with a lawfully enacted storm water management ordinance.

4.106.3 Surface drainage. The site shall be planned and developed to keep surface water from entering buildings. Construction plans shall indicate how the

Swale Design

            Typical Swale Design

site grading or drainage system will manage surface water flows. Examples of methods to manage surface water include, but are not limited to the following:

    1. Swales
    2. Water collection and disposal systems
    3. French drains
    4. Water retention gardens
    5. Other water measures which keep surface water away from building and aid in groundwater recharge.

Exception: Additions and alterations not altering the drainage path.

Section 4.303

Indoor Water Use

4.303.1 Water conserving plumbing fixtures and fittings. Plumbing fixtures (water closets and urinals) and fittings (faucets and showerheads) shall comply with the following:CalGreen Water Closet

4.303.1.1 Water Closets. The effective flush volume of all water closets shall not exceed 1.28 gallons per flush. Tank type water closets shall be certified to the performance criteria of the U.S. EPA WaterSense Specifications for Tank-type toilets.

Note: The effective flush volume of dual flush toilets is defined as the composite, average flush volume of 2 reduced flushes and 1 full flush.

Water closets < or equal to 1.28 gal/flush

Urinals, < or equal to 0.5 gal/flush

Single shower heads < or equal to 2.0 gpm @ 80psi

Lavatory Faucets < or equal to 1.5 gpm @ 60psi and > or equal to 0.8 gpm @ 20 psi

Kitchen Faucets < or equal to 1.8 gpm. @ 60 psi.

Section 4.304

Outdoor Water Use

4.304.1 Outdoor potable water use in landscape areas. After December 1, 2015, new residential developments with an aggregate landscape area equal to

Residential Grey Water System

            Residential Grey Water System

or greater than 500 square feet shall comply with 1 of the following options:

    1. A local water efficient landscape ordinance or the current California Department of Water resources’ Model Water Efficient Landscape Ordinance (MWELO), whichever is more stringent; or
    1. Projects with aggregate landscape areas less than 2,500 square feet may comply with the MWELO’s Appendix D Prescriptive Compliance Option.


    1. The MWELO and supporting documents are available at:

    1. A water budget calculator is available at:

Section 4.406

Enhanced Durability and Reduced Maintenance

4.406.1 Rodent Proofing. Annular spaces around pipes, electric cables, conduits or other openings in sole/bottom plates at exterior walls shall be protected against the passage of rodents by closing such openings with cement mortar, concrete masonry or a similar method acceptable to the enforcing agency.

Section 4.408

Construction Waste Reduction, Disposal and Recycling

4.408.1 Construction waste reduction of at least 65 percent. Recycle and/or salvage for reuse a minimum of 65 percent of the non-hazardous construction and demolition waste in accordance with either Section 4.408.2, 4.408.3, or meet a more stringent local construction ordinance. Residential Construction Waste


    1. Excavated soil and land-clearing debris.
    2. Alternate waste reduction methods developed by working with local agencies. If diversion or recycle facilities capable of compliance with this item, do not exist or are not located reasonably close to the job site.
    3. The enforcing agency may make exceptions to the requirements of this section when isolated job sites are located in areas beyond the haul boundaries of the diversion facility.

4.408.2 Construction waste management plan. Submit a construction waste management plan in conformance with Section 4808.2 1 through 5. The construction waste management plan shall be updated as necessary and shall be available during construction for examination by the enforcing agency.

    1. Identifies the materials to be diverted from disposal by recycling, reuse on the project or salvage for future use or sale.
    2. Specifies if materials will be sorted on-site or mixed for transportation to a diversion facility.
    3. Identifies the diversion facility where the material collected will be taken.
    4. Identifies construction methods employed to reduce the amount of waste generated.
    5. Specifies that the amount of materials diverted shall be calculated by weight or volume, but not by both.

Excerpts of Note from Other Sections:

Any gas fireplace shall be direct vent sealed combustion type. Any installed wood stove or pellet stove shall be EPA Phase II certified.

Duct openings and mechanical appliances shall be kept covered or sealed until final start up.

Adhesives, Paints, Aerosols and Carpets shall meet all current Low-VOC requirements.

Whole house fans shall have insulated louvers or remote fans with insulated ducts.

Heating and Air Conditioning systems shall be designed using heat loss and gain calculations, duct sizing design and systems capacity design compliant with ANSI/ ACCA Manuals J, D, and S, ASHRAE handbooks or other equivalent software or methods.

Residential Checklist Pricing

For our residential checklist pricing see the following link:

Residential Checklist Pricing

Want to Learn More About the 2016 CalGreen Code?

You can view the actual 2016 California Green Building Standards Code here:

2016 California Green Building Code

At CalGreen Energy Services we are specialists in your CalGreen permit requirements and documentation. We can guide you through the process and help you avoid costly missteps. If you have a CalGreen questions please feel free to call us. We are happy to help.

We respond quickly to emails and voicemails. We will put together a proposal for you right away and can typically start on your project within a couple of days.

Email or call us now to see how we can help you:


Phone: 707-328-5299.


CalGreen Energy Services

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