ESG Data Integrity · Real Estate Private Equity

When the ESG numbers don't add up, the problem usually started on day one.

How we validated 250+ portfolios — 2,000 assets and 3.3 million data points — for a global real estate private equity firm, and made every downstream ESG report trustworthy again.

250+

Portfolios validated
into one source of truth

2,000

Assets onboarded &
validated at the point of entry

3.3M

Data points verified
against source documents

The challenge

Every ESG figure a fund reports — its GRESB score, certification coverage, carbon footprint, ENERGY STAR benchmarks — traces back to one place: the asset record. But that record is created in the rush of an acquisition, by people closing the deal, not reporting ESG. Addresses get abbreviated. Construction years left blank. Floor areas estimated. Asset classes mislabeled.

None of it looks like a problem — until reporting season, when the numbers don't tie out, submissions get flagged, and the team spends weeks tracing a discrepancy back to a single field someone fat-fingered at onboarding.

What we did

Validated structure & entity hierarchy so every asset mapped correctly from the start.
Verified the core attributes — address, city, gross area, construction year — against source documents, not the deal-team handoff.
Built a repeatable due-diligence QC gate, so no asset could enter the system "ESG-blind."

The outcome

A single, trusted source of truth across 250+ portfolios.
GRESB, FMV allocation, ESPM benchmarking & carbon accounting inherit clean inputs.
Reporting season shifted from forensic clean-up to confident submission.

Your reporting is only as good as the asset data underneath it.

Wherever you are — first GRESB submission or tenth — if data isn't validated at the source, every report inherits the error, and you won't see it until it's expensive to fix. We've done this across 2,000 assets and 3.3 million validated data points. We can do it for yours. Book a data-integrity audit →