Using smart water management to improve performance outcomes across real estate asset classes

Water efficiency is increasingly linked to real estate performance. Beyond environmental considerations, water use directly affects operating expenses (OpEx), net operating income (NOI), and the quality of sustainability disclosures. As portfolios expand across water-stressed regions and reporting expectations rise, smart water management has emerged as a practical way to deliver measurable financial and sustainability outcomes across asset classes.

Water efficiency as a performance lever

Water is one of the more controllable components of OpEx, yet many portfolios still rely on monthly utility bills and reactive maintenance to manage it. These approaches provide limited insight into how water is used across assets and often fail to identify inefficiencies until costs have already accrued.

As utility rates rise and scrutiny around resource use increases, this lack of visibility introduces cost volatility and reporting risk. More granular, continuous data enables owners and operators to manage water as an active performance variable rather than a fixed expense.

Turning infrastructure into performance data

Smart water management combines two complementary capabilities:

• Smart irrigation control, which adjusts outdoor watering based on site-specific and weather conditions
• Continuous water flow monitoring, which tracks indoor and outdoor consumption patterns and flags leaks and other abnormal use

Together, these tools transform physical infrastructure into a source of actionable data, enabling earlier intervention and more precise performance measurement.

Reducing OpEx and protecting NOI

Real-world portfolio deployments demonstrate how data-driven water management can materially reduce operating costs.

In a large multifamily REIT portfolio operating in water-stressed markets, smart irrigation and continuous monitoring were deployed across dozens of communities. Analysis revealed sustained water loss and inefficient irrigation practices that were not visible through utility bills alone.

Addressing these issues resulted in more than 140 million gallons of avoided water use annually, with portfolio-level utility savings reaching seven figures on an annualized basis. At the asset level, reducing unnecessary water spend helped stabilize OpEx and limit exposure to unexpected cost increases—supporting NOI resilience without deferring maintenance or reducing service quality.

Improving water use intensity (WUI)

Water use intensity (WUI) is an increasingly important benchmarking metric, but meaningful improvement depends on accurate, normalized data. Smart water management supports WUI reduction by enabling:

• Consistent measurement across assets
• Normalization by floor area or asset type
• Identification of outliers that distort portfolio averages

Within the same REIT portfolio, multifamily and mixed-use properties achieved double-digit percentage reductions in normalized water use after implementing smart irrigation controls and continuous monitoring. Retail assets with significant landscaped areas saw particularly strong performance as irrigation schedules were aligned more closely with actual site needs.

These improvements were measured rather than modeled, increasing confidence in reported efficiency gains.

ESG performance and GRESB alignment

For GRESB participants, water performance is not only about reducing consumption but also about data quality and consistency.

Smart water management improves sustainability reporting by:

• Replacing estimated or partial data with continuous measurement
• Expanding portfolio coverage
• Strengthening year-over-year comparability

In the REIT example, continuous monitoring enabled water performance to be reported across a broader share of the portfolio with fewer assumptions. This supported clearer performance narratives and reduced the risk of inconsistencies during reporting and validation.

One strategy across asset classes

Smart water management scales across diverse real estate asset classes:

• Multifamily assets benefit from early detection of abnormal indoor use
• Retail and mixed-use properties see strong returns from irrigation optimization
• Office and campus-style assets gain insight into complex, multibuilding consumption patterns

Using a consistent data framework across asset types allows owners to compare performance, identify best practices, and scale effective interventions portfolio-wide.

From asset-level savings to portfolio strategy

Beyond immediate cost savings, water data informs broader asset management decisions. Portfolio teams can use performance insights to identify high-risk assets, prioritize capital investments, and track the impact of efficiency measures over time.

In this way, water management becomes part of a wider performance and resilience strategy rather than a standalone sustainability initiative.

Across real estate asset classes, smart water management has demonstrated its ability to deliver lower operating expenses, improved water use intensity, and stronger sustainability reporting outcomes.

By combining smart irrigation control with continuous water monitoring, portfolios can move beyond reactive water management and achieve performance improvements that benefit both financial results and sustainability objectives. For GRESB participants, this approach provides a practical pathway to aligning operational efficiency with transparent, high-quality reporting.

This article was written by Jemetha Clark, Chief of Staff, Growth & Impact, at HydroPoint. Learn more about HydroPoint here.