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Business Details
50+ Years
experience
Professional Engineering & Surveying Services in Kingston
Established in 1956, Brinnier and Larios, P.C. is a community-focused engineering and land surveying firm headquartered in Kingston, New York. With over six decades of service to the Hudson Valley, we specialize in commercial, residential, and municipal projects across Ulster County and beyond. Our team of 19 professionals, many with decades of tenure, reflects our commitment to respect, integrity, and loyalty in both client and employee relationships. Licensed by the New York State Education Department, we deliver expertise in infrastructure design, environmental compliance, and precise surveying solutions. Our engineering services span water systems, wastewater treatment, stormwater management, and municipal infrastructure, while our surveying division handles ALTA/NSPS surveys, topographic mapping, and construction layout. We prioritize long-term client partnerships, evidenced by our 65-year history of serving institutions like school districts, municipalities, and private developers.

Our principals combine generational experience, including leadership roles in regional water treatment facilities and large-scale land development projects. Community engagement remains central to our mission, with team members actively contributing to local organizations such as the YMCA and Kingston Hospital Foundation. We maintain rigorous technical standards through certifications like ISO compliance and state licensing for engineering and surveying disciplines. Our CAD and field operations teams integrate advanced technologies like RTK GPS and AutoCAD Civil 3D to ensure precision across all projects. This enduring dedication to quality and client satisfaction has solidified our reputation as a trusted regional engineering partner.
Services
AutoCAD Mapping Commercial Site Planning Construction Inspection Dam Design Digital Modeling ALTA/NSPS Surveys Topographic Surveys Stormwater Management Wastewater Treatment Land Subdivisions
Details
  • Year established: 1956
Highlights and features
  • 65+ years of Hudson Valley engineering and surveying expertise
  • Team members with decades of continuous service to the firm
  • Licensed Professional Engineers and Surveyors with municipal project leadership
  • Comprehensive services from stormwater management to ALTA/NSPS surveys
  • Proven track record with institutions like Kingston Hospital and YMCA
Associations and certifications
  • New York State Education Department
Services
AutoCAD Mapping
Our AutoCAD Mapping services create precise digital representations of utility networks and land features using advanced CAD technologies. We convert field data into actionable plans for infrastructure projects, ensuring accuracy for municipal and private clients. This service supports efficient decision-making for water systems, road networks, and land development initiatives.
Stormwater Management
We design comprehensive stormwater management solutions that prevent flooding and meet environmental regulations. Our plans integrate detention basins, permeable surfaces, and drainage systems tailored to site-specific conditions. These strategies ensure compliance with state and federal requirements while protecting community infrastructure.
ALTA/NSPS Surveys
Our ALTA/NSPS surveys meet the highest industry standards for commercial property transactions. We identify boundary details, easements, and improvements to minimize legal risks for developers and municipalities. This service combines field precision with title report analysis for complete property documentation.
Wastewater Treatment
We design and upgrade wastewater treatment facilities to enhance capacity and regulatory compliance. Our engineers optimize collection systems and treatment processes for municipalities, including infiltration reduction and plant modernization. These solutions improve system longevity and environmental performance.
Land Subdivisions
Our subdivision services transform raw land into functional residential or commercial parcels. We handle zoning compliance, road layout, and utility planning to create market-ready developments. This includes lot line revisions and master plans that balance client goals with municipal requirements.
People
Dennis M. Larios
Engineering Principal, President
Licensed Professional Engineer with 50+ years' experience leading municipal projects including Kingston Wastewater Treatment Facility upgrades. Cornell graduate and YMCA Board member who received Kingston Hospital's Lifetime Achievement Award in 2011.
Christopher J. Zell
Surveying Principal, Vice-President
Licensed Surveyor with 50-year track record certifying 3,000+ surveys. Supervises IBM Kingston Facility surveys since 1983 and leads Farm Hub land projects. Member of Mid-Hudson Land Surveying Association and Hurley Lions Club.
John D. Davidson
Senior Project Engineer
Licensed Engineer with 30+ years' expertise in water distribution systems and NYSDEC compliance. Former Ulster County Health Department Public Health Engineer responsible for county water systems. University of New Hampshire graduate.
Allan M. Dumas III
Senior Project Engineer
Licensed Engineer with dual civil engineering and business administration credentials. Former Director of Environmental Sanitation for Ulster County Department of Health. Specializes in spill prevention plans and wastewater permitting.
Paul Larios
Senior Project Engineer
Licensed Engineer with Cornell University MEng in Water Resources. Designed sustainable water treatment plants in Honduras through Agua Clara program. Current NYSSPE Capital District Chapter Director.
Questions
What engineering services do you offer?
We provide water treatment design, stormwater management, municipal infrastructure planning, and environmental compliance solutions for public and private clients.
Do you handle surveying for residential properties?
Yes, we offer residential property surveys, boundary marking, and subdivision planning services tailored to homeowner and developer needs.
Which areas do you serve?
Our primary service area includes the Hudson Valley, with core expertise in Kingston, Ulster County, and surrounding New York regions.
How experienced is your team?
Our principals have 150+ combined years of experience, including major projects like Dietz Memorial Stadium upgrades and Kingston Wastewater Treatment Facility improvements.
Can you assist with municipal projects?
Yes, we specialize in municipal engineering with decades of experience supporting towns, school districts, and county departments across New York State.