We work with real estate portfolios to reduce infrastructure cost exposure—specifically water—and convert those improvements into measurable NOI and asset value.
Without asset-level visibility, water is managed as an operating expense — not as a capital markets input. That's a structural disadvantage.
Portfolio managers receive aggregate utility bills — not actionable data. Anomalies, leaks, and inefficiencies compound for months before anyone notices. By then, the cost is already in the books.
Missing or low-coverage water data directly suppresses GRESB scores. With 150+ institutional investors referencing GRESB benchmarks, a weak water indicator affects fund positioning and capital access — not just compliance.
Efficiency upgrades without verified measurement cannot be reported to investment committees or reflected in NOI projections. Unverified claims carry no weight in underwriting or ESG disclosure.
Visibility isn't sensors. It's the intelligence layer that turns consumption data into investment decisions.
"Water data should tell you which assets are performing, which are at risk, and what the NOI impact is — in real time."
— WST Advisory Framework
Every asset measured against its own peer group. Hospitality vs. office vs. industrial — each with its own intensity baseline and anomaly threshold.
Real-time monitoring flags abnormal consumption. Every alert is translated into an estimated cost exposure before it becomes a capital event.
The Ara AI platform automates utility bill collection portfolio-wide, ensuring data coverage that satisfies WT1 indicator requirements — the highest-weight water component in GRESB scoring.
Every efficiency improvement is converted to annualized savings, payback period, and NOI impact — with verified documentation suitable for lender, investor, and ESG disclosure.
Water is the last unmanaged utility in most institutional portfolios. WST converts asset-level consumption data into the financial metrics your investment committee, lenders, and LPs expect — NOI impact, payback period, and verified savings documentation.
"Verified savings across 31 assets. Reported at the GRESB level. WST gave us the data to have a different conversation with our investors."
Portfolio Manager · DiamondRock HospitalityWater data gaps are the single most common reason portfolios lose GRESB points on the water component. WST's Ara AI platform automates utility bill collection portfolio-wide, closing WT1 coverage gaps before submission — and producing verified documentation for CDP and LP disclosure.
WST doesn't replace your infrastructure — it instruments it. Our IoT monitoring layer integrates with existing main and sub-meters, cooling towers, boilers, and irrigation systems to produce real-time consumption data at the device level. No rip-and-replace. No extended installation windows.
"WST's audit found issues our engineers missed — it paid for itself in 90 days."
Director of Engineering · Hilton South TowerAra AI handles data coverage. Real-time monitoring validates it. Together they produce the audit-grade visibility institutional portfolios require.
Ara aggregates utility data across the portfolio automatically — eliminating manual entry, closing coverage gaps, and generating GRESB-ready datasets at scale.
Smart sensors monitor live consumption at the asset level. Deviations from baseline trigger immediate alerts with estimated cost impact — before the next billing cycle.
WST translates both data streams into portfolio-level reporting: GRESB submissions, NOI impact analyses, efficiency roadmaps, and investment committee documentation.
DiamondRock engaged WST to establish portfolio-wide water visibility across its hospitality assets, beginning with The Westin Fort Lauderdale Beach Resort. Real-time monitoring and bill validation delivered verified consumption reductions that were documented for both internal reporting and GRESB submission.
Read Full Case StudyWhether you need a defined-scope assessment or ongoing portfolio advisory, WST structures around your investment cycle — not a product catalog.
A scoped engagement producing audit-grade findings, GRESB-formatted data, and a prioritized efficiency roadmap. Designed for acquisition due diligence, GRESB preparation, or establishing a water baseline across a new portfolio segment.
A continuous advisory relationship providing real-time monitoring, automated GRESB data collection via Ara AI, and ongoing NOI impact reporting across the portfolio. WST functions as an embedded water intelligence layer.