Mobile Navigation
Main Menu

About Us

Thornton Tomasetti employees gather at a Spectrum Pride event in the office.
Main Menu

People

We have the experts to meet your challenge. Let us connect you with the specialist you need.
Contact us
Main Menu

Projects

Global experience. 
Regional perspective. 
Local impact.
Explore all projects
Main Menu

Expertise

Main Menu

Insights

Explore our latest news and perspectives.

Latest podcast

Mainstreaming Mass Timber
View all insights
Main Menu

Core Studio

R&D and technology play an essential role in our firm. We invest in constant learning, testing and innovation. That uniquely positions us to solve our clients’ most difficult problems.
Innovation Engine Our CORE groups manage our research and development efforts, from incremental efficiency improvements to solving some of the most challenging engineering problems of our time. Learn More
Innovation Output We believe collaboration amplifies our innovation potential and creates connections that lead to better, more imaginative solutions for our clients. Learn More
Main Menu

Search

Sustainability

We partner with clients to deliver high-performance, low-carbon buildings and districts optimized for energy, resilience, and occupant health across the full life cycle.
Sustainability Practice
Sustainability At-A-Glance
sustainability Sandy Agrafiotis photo
sustainability Sandy Agrafiotis photo
200+ LEED-accredited employees
9,496 tons CO₂ saved
2,000+ Sustainability & Resilience Projects

Here's How

We work collaboratively with stakeholders to define goals, evaluate constraints, and identify opportunities across interconnected systems. Leveraging advanced modelling, simulation, and analytical tools, we assess performance, test scenarios, and quantify impacts to inform decision-making. Our role is not simply to recommend solutions, but to provide the technical rigor and clarity needed to support resilient, efficient, and implementable outcomes.

Qualifications

We partner with architects, engineers, building owners, and operators from early planning through design, construction, and operations to integrate sustainability and resilience throughout the built environment. 

Our expertise combines energy and carbon analyses, decarbonization and net-zero strategies, and building performance optimization with resilience and risk advisory to improve asset performance. The result is future-ready, high-performance buildings and portfolios that balance efficiency, resilience, and occupant health.
sustainability Zurich American Insurance Company, North American Headquarters © James Steinkamp Photography

Here’s how we can help you:

  • Integrated design process and performance-driven charrette facilitation
  • Whole-building parametric energy, daylight, and systems optimization
  • Whole-life carbon analysis (embodied + operational, LCA, net-zero pathways)
  • Advanced materials intelligence (low-carbon selection, toxicity screening, supply chain risk)
  • High-performance building systems (Passive House, envelope + systems optimization)
  • Climate resilience strategy (multi-hazard risk, adaptation planning, asset vulnerability analytics)
  • Integrated water systems optimization (hydrological balance, re-usue, and stormwater performance)
  • Certification strategy and technical compliance (LEED, LBC, Net Zero, BREEAM, SITES, Fitwell, Envision)
  • Digital dashboards and twins

Our Team

Julie Pietrzak
Julie Pietrzak
Senior Principal & Sustainability and Resilience Practice Leader
jpietrzak@thorntontomasetti.com +1.917.661.7972 New York
Lisa Bolle
Lisa Bolle
Senior Associate
lbolle@thorntontomasetti.com +1.212.367.2911 New York
Pittsburgh Airport Terminal Modernization
pittsburgh-airport-modernization

Gensler + HDR in association with luis vidal + architects

The Alloy Block
100 Flatbush

Thornton Tomasetti

Mira
folsom

Related Solutions

Solution

Decarbonization

Solution

Commercial

Solution

Cultural & Community

Solution

Façades

Solution

Hospitality & Gaming

Solution

Laboratory & Research

Solution

Resilience

Solution

Restoration & Renewal

Solution

Structural Design

Capabilities

Expertise

Bioclimatic Design
Building Analytics
Building Enclosure Commissioning (BECx)
Carbon Capture, Utilization and Storage
Climate Policy & Equity
Climate Risk Assessments
Decarbonizing the Built Environment
Decarbonizing the Energy Industry
Decarbonizing the Manufacturing Sector
Decarbonizing Transport
Embodied Carbon
Emergency Preparedness Planning
Envelope Renewal
ESG+R Portfolio Consulting
Façade Consulting
Façade Forensics
Flood Resilience
Healthy Indoors Airflow Modeling
Life-Cycle Assessment
Mass Timber Construction
Modular Design & Construction
Multidisciplinary Building Systems Renewal
Nature-Based Solutions
Net-Zero Design
Operational Carbon
Overbuild Developments
Passive House
Project Certification
Recovery-Based Design
Resilience Master Planning
Resilience Strategies
Resilient Infrastructure
Stormwater Management
Sustainability & Resilience Frameworks
Whole-Life Carbon

Technology

Asterisk
Beacon

Related Projects

Stonecutter Court in London. Thornton Tomasetti

Featured Project

Stonecutter A new office building rewrites the rules of sustainable construction in London, doubling size without adding weight, reusing foundations and setting a low-embodied-carbon record for the City of London.

Additional Projects

Show More

Related News & Events

asd

Insight

Whole Life-Cycle Carbon Assessment London
May 20, 2026
Whole Life-Cycle Carbon Assessments in London help project teams connect structure, façade, and building systems to reduce carbon, improve durability, and protect long-term asset performance.
Flood Resilience: Designing for Recovery

Insight

Flood Resilience: Designing for Recovery
March 25, 2026
Flood resilience design helps buildings recover quickly after flooding by protecting critical systems, reducing failure points, and planning for future climate risk.

Related Resources