NABIE Officers




Mr. Roop is President at Lockatong Engineering, Inc. He has a Bachelor of Science in Mechanical Engineering from Tufts University and a Master of Science in Environmental Engineering from Villanova University. His work experience includes 41 years of experience in facility and environmental engineering, investigations, technical feasibility studies, prototype/pilot plant design and evaluation, final design and installation of processes and commercialization of product, design of repairs, improvements, and enhancements to improve efficiency, occupant comfort and life extension in existing structures, indoor air quality investigation, design of HVAC system upgrades and maintenance programs, private residential, commercial (office, residential, light industrial) and institutional facilities such as schools and hospitals. Professional associations include: Professional Engineer in NJ, PA, MA, NY, DE, CT, RI, VT, MN; Building Inspection Engineers Certification Institute; National Society of Professional Engineers, Past President Bucks County Chapter; National Academy of Building Inspection Engineers; Healthcare Facility Management Society of New Jersey – Advocacy Chairman; American Society for Healthcare Engineering; American Society of Heating, Refrigeration and Air Conditioning Engineers; National Fire Protection Association; The National Council of Examiners for Engineering and Surveying.


Vice President

Mr. Dotson is President of Criterium-Dotson Engineers. He has a Bachelor of Science in Architectural Engineering from the University of Texas at Austin, and is a licensed Professional Engineer in Texas. Mr. Dotson has personally conducted thousands of property evaluations including PCA’s, Phase I ESA’s, roofs, masonry, stucco, EIFS, siding wall systems, window systems, life safety systems, mechanical, electrical, plumbing, and feasibility studies. Investigative experience includes building envelope, moisture intrusion, structural systems, drainage systems, retaining and screen walls. CDE provides repair plans and specifications for foundations and structural systems, drainage systems, and building envelope systems, as well as comprehensive property rehabilitation plans and specifications. CDE also provides independent Quality Assurance inspections for commercial and multi-family building envelopes and structures. Mr. Dotson has performed both Structural design and turn-key Architectural and Engineering services on commercial projects including office buildings, schools and remodels, and multi-family. Mr. Dotson is also a Reserve Specialist as designated by the Community Associations Institute. CDE has performed thousands of capital Reserve Fund Studies ranging from single-family homeowner associations to high rise condominiums, commercial office parks, institutional, and entire campus religious facilities. His Expert Witness services have included single-family residential, condominium and townhome construction defect litigation. Professional associations include: the National Society of Professional Engineers; Texas Society of Professional Engineers; National Academy of Building Inspection Engineers (Board Member); and Community Association institute.



As president and founder of Bustamante Engineers Inc., Greg has over 35 years of engineering expertise and oversees all civil and structural engineering projects for his firm. He has inspected thousands of buildings including industrial, commercial, and multi-family buildings, as well as condominium and townhomes for community associations. He is also involved with litigation support for building envelope issues and is currently on the Board of Directors for the local Pennsylvania Society of Professional Engineers. As CAI RESERVE specialist, he has been involved with or managed over 250 reserve fund studies all within the tristate area. Greg also has professional engineering licenses in three states, Pennsylvania, Delaware and New Jersey.



Mr. Yancy is a degreed Civil Engineer and the Principal Engineer and President of Criterium – Yancy Engineers.  Mr. Yancy and the firm engage in the comprehensive investigation of commercial and residential properties. With close to twenty (20) years of cumulative engineering experience to draw from, Mr. Yancy has proficiency in an extensive range of projects and fields including but not limited to civil and structural systems, mechanical, plumbing & electrical systems, structural design, envelope failure and analysis, architectural claddings and assemblies, environmental site investigations, code compliance, and land development.  Mr. Yancy holds professional engineering licenses in Texas, Louisiana, and Colorado. He is also actively involved in a number of professional organizations and his local church.


NABIE encourages all professional engineers and architects involved in the building inspection engineering industry to join our organization.

Standards of Practice

Perhaps the greatest contribution made to the building inspection engineering industry has been the development of the NABIE Standards of Practice

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