CalGreen / Construction & Demolition Debris Recovery Program

Program Overview

The 2016 California Green Building Standards Code (CalGreen), as amended in Contra Costa County Code, requires that at least 65% by weight of job site debris generated by most types of building project types be recycled, reused, or otherwise diverted from landfill disposal. This requirement applies to demolition projects and most new construction, as well as the majority of building additions or alterations (see CalGreen 2016 Project Type Guide for more details). CalGreen requires submission of plans and verifiable post-project documentation to demonstrate that at least 65% of the nonhazardous construction and demolition debris generated on the jobsite are salvaged for reuse, recycled or otherwise diverted.

CalGreen Packet for Applicants and Owners


Additional Resources



CalRecycle (State of California) CalGreen FAQs

GreenHalo Systems: Green Halo provides an online resource for CalGreen Compliance

Listing of Reuse and Recycling Facilities by material Type

Volume to Weight Conversion Tables (2,000 pound = 1 ton)

Average Amount of Construction and Demolition Debris Generated by Project Type



 Type of Project  Pounds/Sq Ft  Pound
(per 5,000 sq. ft project)
 Tons
(per 5,000 sq. ft. project)
 Residential Construction 4.38 21,900 10.95
Nonresidential Construction  4.02  20,100 10.05
Residential Demolition (single-family)  111.3  556,500  278.25
Residential Demolition (multi-family)  127 635,000 317.5
Nonresidential Demolition  155  775,000 387.5
Nonresidential Renovation  17.7 88,500  44.23
Residential Renovation  Varies by Project N/A  N/A

Typical Debris Generated by New Residential Construction

Debris Type  Percent
 Wood 42.4% 
 Drywall 27.3% 
 Concrete 12.0% 
 Brick and Other Mixed Debris  7.3%
 Cardboard  5.4%
 Metals   1.8%
 Asphalt  1.4%
 Plastics and Foad   1.4%
 Other Packaging   0.6%
Textile  0.4%
TOTAL  100%