Why Epsilon?
We specialize in navigating the complexities of regulatory approvals for real estate, energy, and infrastructure projects. Since 1997, our team of experienced scientists, planners, and engineers has provided the expertise and clarity necessary to secure successful project approvals. We are committed to making permits happen, supporting over 3,000 projects across the northeastern United States in sectors ranging from environmental and energy to industry and community development. With Epsilon, your project moves forward with confidence, backed by decades of proven experience and dedicated professionals.
Services
With over 25 years of experience, we offer a diverse range of services that are among the best in their class.
Acoustics & Noise
Environmental Compliance
Air Quality
GIS
Coastal & Marine
Historic Preservation
Ecological Sciences
Real Estate Permitting
Markets
With expertise across various markets, we excel in cross-market collaboration
Energy
Commercial & Institutional Development
Offshore Wind
Transportation Infrastructure
Real Estate & Commercial Development
Industrial
Our Portfolio
Epsilon Associates has completed more than 3,000 projects in nearly all fifty states and several countries across the globe. We are a recognized industry leader in Boston real estate development and regional energy permitting. While we are always eager to share our many project successes, we have chosen to highlight only a select group of our more complex projects.
MEET THE TEAM
KNOWLEDGE CENTER
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New Draft Cumulative Impact Analysis Regulations Released as part of the Development of Siting and Permitting Reforms for Clean Energy Infrastructure
Read more: New Draft Cumulative Impact Analysis Regulations Released as part of the Development of Siting and Permitting Reforms for Clean Energy InfrastructureOn Friday October 31, 2025, the Energy Facilities Siting Board (EFSB) and the Office of Environmental Justice and Equity (OEJE) released the long awaited draft Cumulative Impact Analysis and Standards for Applying Site Suitability Criteria (980 CMR 15.00) and Draft Standards and Guidelines for Cumulative Impact Analysis1. These documents outline […]
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Rob O’ Neal Named Fellow of the Institute of Noise Control Engineering
Read more: Rob O’ Neal Named Fellow of the Institute of Noise Control EngineeringEpsilon is delighted to share that Rob O’ Neal, recently retired Managing Principal, has been named a Fellow of the Institute of Noise Control Engineering (INCE) – one of the organization’s highest professional honors. The INCE Fellowship is reserved for individuals who have “rendered notable service to INCE-USA, made notable […]