Case Studies

Real Projects. Real Results.

Explore how we've helped commercial clients reduce costs, cut emissions, and achieve sustainability leadership across a range of asset types.

Energy

Class A Office Tower — Chicago, IL

42% Energy Reduction Through Deep Retrofit

A 28-story downtown office tower engaged TSustainability to address rising energy costs and prepare for Chicago's Building Energy Performance Standards. We delivered a phased retrofit program covering HVAC, lighting, and building envelope improvements.

Key Outcomes

42% reduction in site energy use intensity
ENERGY STAR score improved from 48 to 91
$1.2M annual energy cost savings
LEED O+M Gold certification achieved

Waste

Mixed-Use Development — Austin, TX

Zero-Waste Construction Across 1.2M Sq Ft

During construction of a major mixed-use development, we designed and managed a comprehensive construction waste management program that diverted materials from landfill and established recycling infrastructure for ongoing operations.

Key Outcomes

94% construction waste diversion rate
Zero-waste certification for operations achieved
Recycling revenue offset $180K in disposal costs
Program replicated across developer's 6-property portfolio

Reporting

National Retail REIT — Multiple Markets

First-Ever ESG Disclosure for 200-Property Portfolio

A publicly traded retail REIT with no prior sustainability reporting engaged us to build their ESG program from the ground up — from data collection infrastructure through investor-grade disclosure aligned with SASB and TCFD.

Key Outcomes

GRI-aligned ESG report published in 9 months
Scope 1, 2, and 3 inventory across 200 properties
Included in GRESB Real Estate Assessment
ESG score improved 34 points year-over-year

Certifications

Life Sciences Campus — San Diego, CA

LEED Platinum for Complex Lab & Office Campus

A life sciences developer sought LEED Platinum for a new 3-building research campus — a challenging target given the energy intensity of laboratory environments. We led the full certification strategy from schematic design through final submission.

Key Outcomes

LEED Platinum BD+C achieved on all 3 buildings
30% better energy performance than ASHRAE baseline
Net-zero water design for landscape irrigation
First LEED Platinum life sciences campus in the region