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Trusted Surveying and Engineering Services in Boston
DGT Associates is New England's premier surveying and engineering firm, combining over 125 years of regional experience with cutting-edge technology to deliver precise, reliable solutions. Our legacy firms, including William S. Crocker, Co. and John F. Hennessy Co., have shaped our expertise in serving developers, municipalities, and institutions. We prioritize thoughtful innovation, maintaining the highest standards of precision and safety while addressing projects of varying scales and complexities.

Our team's deep institutional knowledge and commitment to modernization ensure clients receive actionable insights for successful development. From historic landmarks to modern infrastructure, we contribute to meaningful community growth through technical excellence and client-focused service.
Services
Land Surveys Construction Support 3D Services Subsurface Utility Mapping Engineering Services Site Assessment Boundary Surveys Topographic Mapping ALTA/NSPS Surveys Utility Locating
Highlights and features
  • Over 125 years of regional surveying and engineering expertise
  • Licensed professionals with advanced 3D scanning and mapping technology
  • Proven track record with iconic Boston projects like Fenway Park
  • Comprehensive services from site assessment to construction inspection
  • Commitment to safety, precision, and client-specific solutions
What people say
Delivered the confidence you need High quality, detailed mapping Responsive and attention to detail Critical visibility for design decisions Successful project completion
Services
Land Surveys
DGT Associates provides precise land surveying for property boundaries, subdivisions, and development projects. Our licensed professionals use advanced technology to deliver accurate measurements and regulatory compliance. Clients benefit from our deep regional knowledge and ability to navigate complex environmental and zoning challenges.
Subsurface Utility Mapping
Our subsurface utility mapping identifies underground infrastructure using ground-penetrating radar and 3D modeling. This service prevents construction conflicts and ensures safety through ASCE 38-02 standard compliance. Clients receive detailed CAD deliverables for informed project planning.
3D Services
DGT's 3D laser scanning creates high-resolution models for building faades, existing conditions, and site documentation. This technology enhances design accuracy and project coordination. Our early adoption of LiDAR systems ensures clients receive cutting-edge, actionable data.
Engineering Services
We offer full-cycle civil engineering from site planning to construction inspection. Our team specializes in stormwater management, roadway design, and environmental compliance. Clients receive integrated solutions combining technical expertise with regulatory knowledge for successful project execution.
Construction Support
DGT provides continuous construction support including layout verification and as-built documentation. Our services ensure adherence to design specifications and timelines. Real-time data collection helps maintain project accuracy and minimize costly rework.
People
Michael A. Clifford
Co-founder & Principal
A licensed Professional Land Surveyor with 30+ years of experience, Mike specializes in urban development projects. He advocates for integrating modern technology with traditional surveying methods and holds a B.S. in Civil Engineering from Northeastern University.
Robert S. Staples
Co-founder & Principal
With 20+ years in surveying, Bob focuses on implementing new technologies. He has extensive experience in infrastructure projects and holds a management degree from Ave Maria College, emphasizing CAD and GIS systems.
Bert E. Corey
Engineering Department Manager
Bert manages civil engineering projects with expertise in site planning and Title 5 inspections. He holds dual degrees in civil and environmental engineering and specializes in stormwater management and sewage system design.
Michael A. Twohig
Project Director for Subsurface Mapping
Mike leads subsurface utility mapping with 35+ years of experience. He specializes in damage prevention and holds a Civil Engineering degree from Cork Institute of Technology, contributing to industry safety standards.
Fredric W. King
Senior Engineer
Fred brings 40+ years of experience in wetland delineation and LEED-certified site design. A licensed Professional Engineer, he holds degrees in Forest Management and Civil Engineering Technology from the University of Massachusetts.
Questions
What surveying services does DGT offer?
DGT provides land surveys, boundary delineation, topographic mapping, ALTA/NSPS surveys, and 3D scanning for residential, commercial, and municipal projects.
Do you provide engineering services beyond surveying?
Yes, we offer civil engineering services including site design, stormwater management, permitting assistance, and construction inspection across New England.
How does DGT handle subsurface utility mapping?
We use ground-penetrating radar and ASCE 38-02 standards to create detailed subsurface maps, minimizing risks during construction projects.
What areas do you serve?
While based in Boston, we serve clients throughout Massachusetts including Worcester, Framingham, Cambridge, and surrounding regions.
What technology does DGT use?
We employ 3D laser scanning, LiDAR, GIS systems, and BIM software to enhance accuracy and efficiency in surveying and engineering projects.
How experienced is your team?
Our professionals have 20-40 years of experience with multiple generations of surveying and engineering expertise dating back to 1877.