California has long been at the forefront of environmental regulation, and its building codes reflect this commitment. The California Green Building Standards Code (CALGreen) sets mandatory and voluntary measures for sustainable construction. Understanding these requirements — and how reclaimed lumber fits into the picture — can give your project a competitive edge.
What Is CALGreen?
CALGreen (Title 24, Part 11 of the California Code of Regulations) is the nation's first statewide green building code. It applies to all new construction and significant renovations in California. The code addresses energy efficiency, water conservation, material conservation, and environmental quality.
How Reclaimed Lumber Helps Meet CALGreen Requirements
Material Conservation (Section 5.408)
CALGreen requires construction projects to divert a minimum of 65% of construction and demolition waste from landfills. Using reclaimed lumber directly contributes to this requirement in two ways:
1. Source reduction — Using reclaimed materials means less new material is purchased and less packaging waste is generated.
2. Waste diversion — By purchasing lumber that would otherwise be discarded, you are actively diverting material from landfills.
Recycled Content Requirements
Many green building programs, including LEED and GreenPoint Rated, award points for using materials with recycled content. Reclaimed lumber qualifies as 100% pre-consumer or post-consumer recycled content, depending on its source.
Environmental Product Declarations (EPDs)
As California moves toward requiring EPDs for building materials, reclaimed lumber's environmental profile becomes increasingly advantageous. The embodied energy and carbon footprint of reclaimed wood is a fraction of that of newly harvested timber.
LEED Credits and Reclaimed Lumber
The LEED rating system awards points for reclaimed material use under several categories:
- MR Credit: Building Product Disclosure and Optimization — Points for using products with Environmental Product Declarations
- MR Credit: Sourcing of Raw Materials — Points for using salvaged, refurbished, or reused materials
- MR Credit: Construction and Demolition Waste Management — Points for diverting waste from landfills
Practical Tips for Compliance
1. Document everything — Keep receipts, chain-of-custody records, and photos of reclaimed materials.
2. Work with certified suppliers — Source reclaimed lumber from suppliers who can verify the origin and processing of their materials.
3. Specify early — Include reclaimed lumber specifications in your project plans from the design phase.
4. Combine strategies — Use reclaimed lumber alongside other sustainable practices for maximum compliance credit.
The Business Case
Beyond compliance, using reclaimed lumber can be a marketing advantage. Consumers and tenants increasingly value sustainable building practices. Properties built with reclaimed materials often command premium pricing and attract environmentally conscious buyers and renters.
Partner with CA Lumber Recycling
We provide complete documentation for all reclaimed lumber we supply, including species verification, grade certification, and source documentation. Our team can help you navigate CALGreen requirements and identify the right reclaimed materials for your project.