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What documentation do LEED reclaimed-material credits require?

Short answer: LEED credits for reused and salvaged materials require documentation of each material's source, prior use, and quantity — proof it was genuinely reclaimed, where it came from, and how much counts toward the credit. Reviewers want a traceable record, not a vendor's word.

If you're specifying reclaimed structural timber into a project chasing LEED points, the credit doesn't hinge on the wood being old. It hinges on whether you can document that it's reclaimed and trace where it came from. That's where most packages get thin, because the usual evidence is a supplier's letter.

Which LEED credits this touches

Reused and salvaged content lives under Materials & Resources (MR). Depending on the rating system and version, that's the material-reuse and building-product-disclosure pathways, where reclaimed content counts toward a threshold — usually a share of total material cost or value. The exact credit name and math differ across rating systems (BD+C, ID+C) and versions (v4, v4.1), so check the language for your specific project.

What a reviewer actually checks

Strip away the category names and a reviewer needs to confirm a short list:

Source — the structure or site it was salvaged from, so "reclaimed" isn't just an adjective.
Prior use — evidence it was used before, not new lumber distressed to look old.
Quantity — board feet, weight, or cost value going toward the calculation.
Chain of custody — a line from the salvage source to the installed piece that someone other than the seller can audit.

The soft spot is that all of this usually shows up as one letter swearing the wood is old barn timber. It's an assertion. A reviewer has no way to check it.

Where per-member provenance helps

Documenting each piece — not the lot — strengthens exactly the parts a reviewer probes. A certified timber carries its own verifiable record: species, dimensions, source structure, and a signed, tamper-evident custody history the reviewer (or an owner's rep) can confirm without trusting the supplier. You attach a per-piece answer to "which piece, from where, how big, verified how" instead of a blanket claim.

Honest scope: a certificate supports a LEED submission — it's documentation, not the credit. Hewmark doesn't award points, doesn't represent that any credit will be granted, and the decision always rests with the project team and reviewer. A certificate attests custody and identity, not structural fitness or code compliance.

What to ask your supplier

Confirm the exact MR credit and version, and whether it's calculated on cost or quantity.
Ask for member-level documentation — source, species, dimensions, and a verifiable custody record — not a single lot letter.
Keep it in a form a reviewer can check independently. The record they have to take on faith is the one that draws a request for more information.

General information about LEED documentation practices, not certification advice or a representation about any credit outcome. LEED is a trademark of the U.S. Green Building Council; Hewmark is not affiliated with or endorsed by USGBC. Confirm current requirements against the applicable rating system.