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Civil Engineering & Surveying Services in Webster, NY
At McMahon LaRue Associates, we pride ourselves on being a right-sized engineering and surveying firm that combines extensive industry experience with personalized client service. Our team, led by President Greg McMahon and Vice President Al LaRue, brings over four decades of combined expertise in civil engineering, structural design, and FEMA floodplain management. We specialize in delivering responsive, deadline-driven solutions tailored to the unique needs of homeowners, realtors, insurance companies, and developers across New York State.

Our deep regional knowledge and technical proficiency ensure accurate property assessments, efficient site planning, and compliance with environmental regulations. By maintaining a hands-on approach to every project, we consistently provide thorough, reliable services that clients trust for critical land development and flood risk mitigation decisions.
Services
Civil Engineering Structural Engineering FEMA Services Instrument Surveys Property Stake Outs ALTA/NSPS Surveys Site Constraint Management Drainage Studies Expert Witness Soil Analysis
Highlights and features
  • We offer 45+ years of civil engineering experience with licensed professionals.
  • Our team provides rapid response to urgent client needs and tight deadlines.
  • Specialized FEMA floodplain expertise reduces insurance costs for clients.
  • We deliver site-specific solutions informed by deep regional land knowledge.
  • Our thorough assessments address zoning, wetlands, and environmental compliance.
Services
FEMA Floodplain Services
Our FEMA-certified specialists conduct floodplain determinations, damage analysis, and mitigation strategies to reduce insurance costs and regulatory risks. We prepare elevation certificates and support public assistance programs for flood-affected properties. Clients benefit from our expertise in navigating FEMA requirements for both residential and commercial developments.
Property Surveys
We deliver precise ALTA/NSPS surveys, boundary assessments, and site constraint analyses using advanced GPS technology. Our surveys address zoning restrictions, wetland protections, and environmental overlays to ensure accurate land development planning. Clients rely on our legally defensible documentation for property transactions and dispute resolutions.
Civil Engineering
Our civil engineers design stormwater management systems, subdivision layouts, and infrastructure projects compliant with state environmental regulations. We provide construction inspections, earthwork calculations, and SEQR documentation to support sustainable development. Clients receive cost-effective solutions integrating drainage, utility, and land use requirements.
Expert Witness
We offer expert testimony and technical documentation for property disputes, including boundary conflicts and floodplain litigation. Our licensed professionals provide court-admissible survey data and environmental compliance analyses. Attorneys value our thorough documentation and courtroom experience in resolving real estate and development-related legal matters.
Site Constraint Management
We identify zoning restrictions, soil conditions, and environmental protections affecting property development. Our analyses guide clients through regulatory requirements for wetlands, floodplains, and protected habitats. Developers benefit from our strategic planning to maximize land use potential while maintaining compliance with local and state regulations.
People
Greg McMahon
President
Licensed Professional Engineer with 45 years of experience in residential and commercial land development. Specializes in FEMA floodplain management and civil engineering solutions for complex projects.
Al LaRue
Vice President
Licensed Professional Surveyor with 53 years of expertise in land development and FEMA-related surveying. Focuses on high-tech survey solutions and boundary dispute resolutions across New York State.
Mike Keim
Structural Engineer
Licensed Professional Engineer with 43 years of structural design experience. Specializes in seismic design analysis and multi-state compliance for commercial and residential structures.
Bryan White
Licensed Surveyor
Surveyor with 7 years of experience in topographic mapping and FEMA floodplain assessments. Proficient in AutoCAD and boundary survey documentation for property transactions.
Staci Curran
Administrative Manager
Manages financial operations with 10 years of experience in accounting and client billing processes. Coordinates project logistics to support the engineering and surveying teams efficiently.
Questions
What engineering and surveying services do you offer?
We provide civil engineering, structural design, FEMA floodplain analysis, property surveys, site planning, drainage studies, and environmental compliance services for residential and commercial clients.
How do you help reduce flood insurance costs?
Our FEMA-certified experts analyze floodplain risks, issue mitigation certificates, and implement design solutions to lower flood zone designations and associated insurance premiums.
Do you work with real estate transactions?
Yes, we conduct pre-purchase property evaluations, boundary surveys, and zoning analyses to help realtors and buyers understand land limitations and development potential.
What areas do you serve?
We operate throughout Monroe County and surrounding New York regions, with statewide FEMA service capabilities extending to Lake Ontario and Finger Lakes areas.
Can you assist with development permits?
We prepare SEQR compliance documents, stormwater management plans, and subdivision designs to secure NYSDEC, USACOE, and local regulatory approvals for land projects.