Allwyn Consultants is an Arizona-based environmental, geotechnical, and materials testing firm based in Tempe, Arizona. Our staff is made up of a committed team creating customized solutions to our numerous clients in both the private and public sector. Our guiding principles of quality, responsiveness, service, and fair price are kept in mind with every undertaking to ensure Allwyn provides a result that exceeds our client’s expectations.


  • Geotechnical Investigations

  • Construction Observation and Materials Testing

  • Brownfields Grant Writing and Program Implementation

  • Phase I & II Environmental Site Assessment

  • Regulatory Compliance

  • Environmental Remediation

Completed Projects

Our work speaks for itself!

Allwyn Consultants | Geotechnical & Environmental Engineering
Allwyn Consultants | Geotechnical & Environmental Engineering

From our blog

April 20, 2017 in News

5th and Buckeye Award Ceremony

5th and Buckeye Award Ceremony A ribbon cutting and art dedication ceremony was held today to celebrate the opening of a project 31 years in the making.  The ceremony highlighted... Read More
January 30, 2017 in News

Allwyn Attends EB-5 Investor Conference in Las Vegas, Nevada

Expert Panels During the EB-5 Conference Congress created the EB-5 program in 1990 to stimulate the U.S. economy through job creation and capital investment by foreign investors. Through this program,... Read More

"The Quality of your work was exceptional. you showed great professionalism throughout the project. Your willingness to process and respond to client and project needs were truly appreciated and definitely helped ensure the success of this project. I would highly recommend your services."

Remy SawyerEnvironmental Scientist, Tucson Water

"The challenge of navigating Brownfields redevelopment as a small municipality was overwhelming. Allwyn Environmental helped us get funding and provided technical expertise that allowed us to revitalize our highest priority community site."

Joel GastelumPlanning and Zoning, City of South Tucson

"Allwyn Environmental is on of Eastmark's most valuable partners and we count on their responsiveness and technical capabilities."

Dea MacdonaldSenior Vice President, DMB