Last updated: June 9, 2026. By Will Tygart, author of the Commercial Restoration Carbon Protocol (CRCP). Part of the CRCP property manager guide.
To get usable Scope 3 data from your building vendors, do three things before the next emergency: put a one-sentence data clause in the master services agreement, hand every vendor the same twelve-field job record, and decide in advance which GHG Protocol bucket each field feeds. Everything else — the platforms, the questionnaires, the consultants — is optional. This guide walks a New York property manager through the whole sequence, including what to say when a vendor tells you they don’t track any of this.
You already know this problem — from the other side
Every NYC property manager has lived the tenant-data chase: you need whole-building energy figures for LL84 benchmarking and GRESB, the tenant is worried the data will surface in a rent conversation, their utility provider’s timeline ignores your reporting deadline, and the submeter you paid for sits behind a door you can’t access. Tenant energy data collection is the most documented friction in real estate ESG.
Requesting carbon data from vendors is the same problem in reverse — you are now the counterparty asking, and the vendor has the same three reactions your tenants do: What will this cost me? What will you do with it? And why should this move before my actual work? The fix is also the same: standardized intake, agreed before it’s needed, attached to something the counterparty already cares about. For tenants that is the lease. For vendors it is the invoice.
Why the request is coming whether you send it or not
- California’s SB 253 requires Scope 1 and 2 reporting from large companies doing business in the state beginning in 2026, with Scope 3 following in 2027 — and purchased goods/services (Category 1) and waste (Category 5) sit in the first phase-in wave. If your tenants include SB 253-covered companies, their reporting teams will eventually ask you what happened in their space.
- The EU’s CSRD already pulls value-chain emissions into scope for thousands of companies, including US firms with European exposure.
- GRESB scores real estate entities on whether they monitor service providers’ ESG compliance — an indicator your asset manager answers every year with or without evidence.
- CDP’s data shows fewer than half of companies that request environmental data from suppliers actually receive it — and that roughly 20% of suppliers typically account for some 80% of supply-chain emissions. Translation: most requests fail, and targeting matters.
Activity data beats spend data (and your vendors have it without knowing)
There are two ways to estimate a vendor’s emissions. Spend-based: multiply the invoice by an industry-average factor — fast, and increasingly disfavored because it cannot tell a smoke-odor treatment from a three-week structural dry-out that billed the same amount. Activity-based: count what actually happened — generator hours, gallons of fuel, dumpster loads, pounds of material removed and installed. The GHG Protocol’s ongoing Scope 3 revision pushes hard toward the second.
Here is the thing property managers consistently underestimate: restoration contractors already generate activity data as a byproduct of getting paid. Insurance documentation discipline means they log equipment placed and pulled, days on site, demolition quantities, and disposal manifests. The data exists. It has simply never been asked for in a carbon-shaped container.
The ask: one page, twelve fields
The Commercial Restoration Carbon Protocol defines the container: a per-job record of about a dozen fields — vehicle and hauling mileage, equipment and generator runtime with fuel type, chemicals and consumables, debris volume by waste stream, disposal method and receiving facility, demolished versus replacement materials, job classification and duration — each mapped to its GHG Protocol category, each flagged primary or estimated. A fillable version lives at the vendor carbon report template.
The primary-or-estimated flag is what makes the ask reasonable. You are not demanding laboratory precision from a crew that was pumping water at 3 a.m. You are asking them to write down what they know and mark what they guessed — data quality your reporting team (or your tenant’s) can see at a glance.
The clause: make it contractual, not optional
Contractors respond to payment triggers, not post-event questionnaires. One sentence in the MSA or vendor onboarding packet does the work:
“Vendor shall provide per-job emissions data in the requesting organization’s specified format as a condition of final invoice approval.”
Attach the template as the specified format. The same clause fits naturally inside the green-lease provisions many corporate occupiers are already negotiating — if your tenants’ leases reference sustainability data cooperation, this is the vendor-side mirror of language you already have.
The rollout: five steps, in order
- Pull your vendor list and apply the 80/20. A handful of trades carry most of the carbon: restoration, demolition, roofing, mechanical replacement, hauling. Start there — not with the window washer.
- Start with your restoration vendor specifically. Highest carbon intensity per engagement, best existing documentation habits (insurance makes them paperwork-disciplined), and the trade where one good loss file doubles as LL97 disaster-mitigation evidence.
- Add the clause at the next contract touch. Renewal, onboarding, or rate-sheet update — no need for a special amendment cycle.
- Hand over the template and a fifteen-minute walkthrough. The fields are things crews already know. The walkthrough is mostly reassurance: mark estimates as estimates, send it with the final invoice, done.
- Decide where the data lands before the first record arrives. Which Category 1 / 2 / 5 bucket each field feeds, what proxies you accept when a field comes back blank, and which factor source you cite (EPA Emission Factors Hub, eGRID, WARM, DEFRA). Write it down once; reuse it forever.
What a good vendor deliverable looks like
The ceiling is higher than a filled-in form. Documentation-forward contractors in the catastrophe world already produce orthomosaic drone maps, thermal imaging, and structured damage assessments as standard deliverables — the cleanest contractor-side evidence trail the industry has. A vendor who can timestamp equipment placement photos can timestamp a generator-hours line. When you evaluate vendors on documentation quality, you are also selecting for carbon-data capability — the same muscle.
Objection handling, honestly
- “We don’t track that.” They track most of it — equipment logs, manifests, invoices. The template reorganizes what exists; the primary/estimated flags absorb the rest.
- “What does this cost us?” No license, no platform, no audit. Fifteen minutes per job once the habit forms — and a differentiator the next time a national account asks if they can produce emissions data, because their competitors cannot.
- “Is this legally required?” No, and say so plainly — NYC’s LL97 does not touch contractor emissions. It is contractually required by you, because the people your buildings report to (GRESB, corporate tenants under SB 253 and CSRD) are asking you. Honesty here is what keeps the relationship.
- “Which jobs?” All reactive and capital work above a threshold you pick. Uniformity is the point — the plumber, the restoration crew, and the chiller replacement team get the same one page.
What this means for each seat at the table
| If you are the… | Your move is… |
|---|---|
| Owner | Approve the MSA clause portfolio-wide. The output is GRESB supplier-monitoring evidence and loss documentation that can zero an LL97 penalty year — for the cost of a sentence. |
| Facility / property manager | Run the five steps. You are the only person positioned to apply one standard to every trade that crosses the threshold — and the one who turns “we should get vendor data someday” into a condition of invoice approval. |
| Tenant (corporate occupier) | Ask your landlord or FM team whether vendor emissions data is being captured in your space — the restoration job in your suite is your Category 1 line item, and “we’ll estimate it from spend” is a worse answer every year. |
Frequently asked questions
What Scope 3 data should I collect from building contractors?
Job-level activity data: equipment and generator runtime with fuel type, vehicle and hauling mileage, chemicals and consumables, debris volume by waste stream with disposal facility, demolished versus replacement materials, and job classification and duration — each flagged primary or estimated. This maps to GHG Protocol Categories 1, 2, 4, and 5.
Should I ask vendors for spend-based or activity-based data?
Activity-based wherever possible. Spend-based proxies cannot distinguish a low-carbon job from a high-carbon one with the same invoice total, and the GHG Protocol’s revision direction favors supplier-specific primary data. Use spend-based only as the marked fallback.
How do I make vendors actually send the data?
Contract language tied to payment: “Vendor shall provide per-job emissions data in the requesting organization’s specified format as a condition of final invoice approval.” Post-event questionnaires get ignored; invoice conditions do not.
Which vendors should I start with?
Restoration first — highest carbon per engagement, strongest existing documentation habits, and the job file doubles as LL97 disaster-mitigation evidence. Then demolition, roofing, mechanical replacement, and hauling. Roughly 20% of suppliers typically drive 80% of supply-chain emissions.
Is any of this required by Local Law 97?
No. LL97 covers only building operating emissions. Vendor carbon data is driven by GRESB scoring, California SB 253 (Scope 3 from 2027), CSRD, and corporate tenant reporting — voluntary today, contractual when you make it so.