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Your top Land Surveying firm in Eastern Long Island, NY

Specializing in precise and prompt surveying services in Nassau and Suffolk Counties



We are a Professional Land Surveying firm based in Eastern Long Island, New York specializing in providing high-quality, reliable, professional land surveying services throughout Nassau and Suffolk Counties in a timely, accurate, and cost-competitive manner.

As a full-service professional land surveying firm, we provide the following services:

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Title / Mortgage



Land Division Mapping


ALTA/NSPS Land Title Surveys


Construction Layout


Boundary/Topographic Surveys


FEMA Elevation Certificates


Engineering Design Surveys


Telecommunication Surveys - FAA 1-A Certificates


Legal Descriptions with Exhibits


Expert Witness Service

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Dennis W. Layton, PLS, WRS, CFedS, is a Professional Land Surveyor with nearly 40 years of land surveying experience in New York, Nevada, Arizona, and many other states across the country. Over the years, he has obtained a strong reputation in the Las Vegas development community for his survey and mapping abilities involving a significant number of high-profile projects within the resort corridor and other commercial projects throughout Southern Nevada. He has returned to his hometown on Long Island to focus on providing land surveying services and to mentor a new generation of land surveyors. Dennis works closely with his team of capable surveyors and technicians, which enables us to mitigate challenges quickly as they arise, giving you the assurance that your project is professionally handled. 

Dennis is a Certified Federal Surveyor (CFedS) and is a member of the Long Island Chapter of the New York State Association of Professional Land Surveyors, the National Society of Professional Surveyors, and served as a Director for the Southern Nevada Chapter of the Nevada Association of Land Surveyors.

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Dennis W. Layton, PLS, WRS, CFedS
Professional Licenses and Certifications

  • New York – License No. 50920

  • Arizona – License No. 39799

  • California – License No. 8987

  • Certified Federal Surveyor (CFedS) – No. 1628

  • Colorado – License No. 38358

  • North Dakota – License No. 7663

  • South Dakota – License No. 11147

  • Florida – License No. 7291

  • Idaho – License No. 15304

  • Kentucky – License No. 4355

  • Nevada – License No. 11829

  • Nevada Water-Right Surveyor – License No. 1119

  • Utah – License No. 8096911

  • Washington – License No. 53031

Contact Us

We will be happy to provide a free estimate

Call us at (631) 400-4777 or submit your online request with the form below or to


Thank You!

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Join Our Team of Top Surveyors

Here at Dennis W. Layton Land Surveyor, P.C., we believe our greatest asset is our employees, and is the key to providing quality service to our clients. We offer a diverse working environment, professional development, and competitive benefits. If you know or have an interest in land surveying, we would like to know you.

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