How a National Multifamily Portfolio
Turned Utility Waste Into $794K in Savings

How ecofi partnered with a national multifamily portfolio to deliver measurable water savings, energy reductions, and $138,203 in rebates collected, across 9 states and 25 cities.

A Portfolio-Wide Inefficiency Problem

Managing utility costs across a national multifamily real estate portfolio is one of the most persistent challenges facing property operators today. With 36 properties spread across 9 states and 25 cities, our client faced aging plumbing infrastructure, outdated HVAC controls, and fixture inefficiencies that were quietly eroding NOI across every asset in the portfolio.

Water and energy expenditures had climbed year over year. Yet without a centralized conservation strategy, identifying where waste was occurring, and quantifying the financial impact, remained a major gap. The portfolio needed a scalable solution that could be deployed consistently without disrupting tenants or daily operations.

Scaling multifamily portfolio strategies for water and energy efficiency is exactly what ecofi does best. Our team specializes in turnkey water and energy conservation programs for commercial real estate, handling everything from the initial property assessment through final installation and rebate recovery.

The Solution

A Comprehensive, Phased Fixture Retrofit

Ecofi conducted a full-portfolio assessment to identify the highest-impact opportunities across all 36 properties. Our approach combined water fixture replacements with lighting, HVAC, and controls upgrades, giving property management a complete picture of conservation performance at every location.

The retrofit program delivered upgrades to 60,000 total fixtures across the multifamily real estate portfolio, including plumbing, lighting, and building controls. Each installation was completed by ecofi’s field teams with minimal disruption to residents and operations. According to the U.S. EPA WaterSense program, water efficiency upgrades in multifamily housing can significantly reduce both water and energy costs, outcomes our client experienced firsthand.

On the energy side, lighting upgrades and smart HVAC controls were implemented across common areas and individual units. These measures reduced per-unit energy consumption and improved occupant comfort, two factors that directly support resident retention and long-term asset value.

Multifamily portfolio sustainability efforts deliver the most value when rebate opportunities are fully captured. Rebate management was handled entirely by ecofi, ensuring the client captured every available utility incentive. The portfolio collected $138,203 in rebates that would otherwise have gone unclaimed without a dedicated program in place.

Research from Multifamily Executive confirms that properties investing in low-flow fixture programs are seeing meaningful reductions in water bills and using those savings to strengthen resident renewal conversations and increase revenue.

The Results

Savings at Scale, Sustained Over Time

This multifamily portfolio growth engagement delivered results that were significant across every performance metric. Annual average cost savings came in at 10%, with usage savings averaging 12% per unit per year. Return on investment was achieved in under six years, a strong outcome for a retrofit of this scope and scale.

On a per-unit basis, the program delivered $29 in annual cost savings, 11,000 gallons of water saved, and 4,265 kWh of energy reduced. These outcomes reflect what a focused multifamily portfolio management tool can deliver. CO₂ emissions dropped by an average of 2.5 metric tons per unit, a meaningful contribution to environmental goals across the portfolio.

These figures reflect the cumulative impact of a disciplined, data-driven approach to conservation program management. Ecofi’s team continuously monitors performance across all properties to ensure savings are sustained and new opportunities are identified as they emerge. For more on how ecofi delivers these results, visit our water management services page.