WASTE & WATER
17
WASTE
WATER
Compactor Sensors: In 2024, we introduced Greystar Optimize, a program that uses smart technology to improve waste management efficiency. By installing predictive compactor monitoring sensors that learn each property’s specific patterns and schedule waste pickups when compactors are near capacity, we eliminate unnecessary collections, reducing both costs and associated third party vehicle emissions. Our initial analysis of over 485 properties identified potential annual cost savings of $2.7 million, and as of Q4 2024, 75 properties have implemented the technology. The program has already demonstrated meaningful impact, with some locations reducing pickup frequency by up to 65%. Recycling Enhancements: In key markets like California and Washington, partnerships with specialized waste management teams have improved recycling rates through manual waste sorting programs. These efforts have achieved an average diversion rate of 50% when deployed at our multi-family properties. Additional programs include waste leveling services, where we engage third party teams to manage cardboard recycling by breaking down boxes and ensuring proper disposal in the appropriate containers. Donations and Circularity: We have several targeted initiatives across our European portfolio that engage residents in sustainable practices and support charitable causes through non-financial contributions of goods and materials.
Smart Leak Detection: We installed a smart water monitoring system that continuously tracks flow, temperature, and pressure at a pilot property in London, using artificial intelligence to identify anomalies and prevent waste.
We piloted the technology across 684 apartments and saw a 53% reduction in water usage, translating to 1.6 million liters saved monthly and over $135,000 in annual cost savings. More importantly, the system identified that 22% of units were consuming significantly more water than expected due to hidden issues like leaky fixtures, with one extreme case using 11,600 liters daily (165 times the expected amount). Beyond immediate financial benefits, the program is reducing the property’s carbon footprint by nearly 200 tonnes CO 2 e annually, while enhancing resident satisfaction through proactive maintenance.
Sunela Phoenix, AZ
“Waste to Wonder” is a program that emerged from a practical challenge during two refurbishment projects, where we saw an opportunity to repurpose unwanted furniture rather than sending it to landfill. We partnered with a third party to manage the collection, evaluation, and redistribution process. Our partner ensures items are safe and functional before they are provided to social services in nearby communities. In the UK, our partnership with a charity retailer collecting second-hand clothes for resale across its London shops, has successfully led to recycling of 16 tonnes of clothing across our multifamily portfolio. Our Student Roost partner- ship with a cardiovascular research charity in the UK also allows departing resi- dents to donate unwanted items rather than discard them. In the Netherlands, we’ve taken circularity directly to our residents through furniture upcycling projects that transform potential waste into valuable assets while building community engagement around sustainability.
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