About EnviroVantage

We are an established, highly trusted, demolition, environmental and indoor air quality contractor who has provided safe, well-planned delivery and execution of our services since 1985. We lean on technology, state-of-the-art equipment, and trained skilled labor to safely deliver our clients industry-best practices on job sites every day.

EnviroVantage self-performs:

EnviroVantage serves a variety of markets including the government, general contractor and consultant clients, the healthcare industry, educational institutions, and even residential customers.

EnviroVantage is prepared to mobilize to projects across the United States and its territories with operating offices in New Hampshire (HQ), Maine, Massachusetts, Maryland, and Puerto Rico

Please give us a call to work with us or join our growing team today!



  • Founded on May 17, 1985 by Scott Knightly in New Hampshire.
  • Scott Knightly assisted the NH legislature in writing the state's lead abatement and licensing laws.
  • 1989 – Became the first Licensed Lead Inspector and Contractor in NH – License C001.
  • 1994 – Expanded abatement activities in NH to include asbestos, PCB’s, and demolition services.
  • 1994 – Became licensed to work in Maine and Massachusetts as a Lead and Asbestos Contractor.
Hazardous Dust HVAC Duct Cleaning

Recent Company Growth

In 2018, EnviroVantage acquired EnviroTech Clean Air, Inc. which was established in 1988 as an HVAC Cleaning and Restoration company and was among the first members of the National Air Duct Cleaners Association (NADCA). EnviroTech was awarded projects to help restore air quality within buildings near Ground Zero after 9/11, as well as a highly technical mold remediation & duct cleaning project within the Air Control Town for the Detroit Airport. We still employ many of the great employees that helped EnviroTech succeed.

In 2020, EnviroVantage launched a Soil & Groundwater division to include stand-alone soil and groundwater remediation projects. EnviroVantage has always addressed the removal and remediation of the PCB-, lead-, and asbestos-impacted building materials, and with strategic hires are now able to offer a full suite of environmental services to our clients.

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Our Commitment

Be the industry-leading provider of safe and effective demolition, environmental, and indoor air quality services.

Skilled field positions include:

  • Civil, Environmental and Structural Engineers
  • Project Managers
  • Site Superintendents
  • Heavy Equipment Operators
  • Asbestos Supervisors / Asbestos Workers
  • Robotic Demolition Experts / Hand Tool Experts

Skilled office positions include:

  • Regulatory Compliance
  • Corporate Health & Safety Officers
  • Operations Management
  • Cost Estimators & Technical Design Lead
  • Business Development & Marketing
  • Human Resources & Accounting

Extensive Hands-On Employee Training

EnviroVantage is a versatile, specialty environmental contractor providing abatement, demolition, remediation, indoor air quality, and more to our clients. We require highly trained and versatile crews to perform these services.

EnviroVantage has made it a priority to train and develop our workforce to meet the rising demands of our industry and our company’s growth.

Read about our Culture and Campus
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Join Our Team

We’re always looking for talented and qualified individuals to join our team.