WTH Land Surveyors P.C. is family owned and New York State Licensed since 1989.

Why us?

Family Owned

William T. Holgan Land Surveying P.C. has been family owned and operated since Mr. Holgan became New York State licensed in 1989. We provide a high level of personal service and honest feedback regarding your project.

Certified Experience

Since 1989, William T. Holgan Land Surveying P.C. has built a highly regarded reputation within the industry, local government and surrounding community.

Competitive Pricing

While our pricing is fair, competitive and transparent, our level of service and industry knowledge is unparalleled.

Our Services

Title Land Survey & Mapping

Title Land Survey & Mapping for Property Purchase and Refinance

  • Boundary Surveys
  • ALTA Surveys
  • Legal Descriptions
  • Easement Locations
  • Encroachment Surveys
  • Fence and tree/shrub line location
  • Property line staking
Construction Land Surveying

Construction Land Surveying

  • Site Planning
  • Topographic Mapping
  • Benchmarks set
  • Foundation Staking and Location
  • Piling Stake outs
elevation certifcates land surveyor

Land Planning & Development

  • Subdivisions
  • Building Permits
  • CO’s and Compliance
  • Board of Health
  • Septic Design
  • Radius Area Maps
  • Lot Line Adjustments
FAQs - Long Island Land Surveyors

Elevation Certificates/LOMA (Letter of Map Amendment)

  • Flood Zone Determination
  • Building Elevation Determination
  • All elevations in North American Vertical Datum of 1988 (NAVD 88)
  • New York Rising

What our Customers are Saying

View all of our reviews on Google.

I needed a survey of my property done for a pool install. The service provided by William T. Holgan Land Surveyors was prompt, thorough, and professional. Leeanne answered all of my questions (on several occasions), as this was my first experience having a survey done. When William came out to take measurements, he was here for several hours. Once my survey was ready, I was provided with 4 copies plus a PDF for my files. I would gladly recommend William T. Holgan Land Surveyors.

Kellie Mendonis Avatar Kellie Mendonis
September 14, 2020

Great people to work with. They both were very thorough and knew their stuff. Highly Recommended.

Lilla Geremia Avatar Lilla Geremia
September 11, 2018

My husband and I were extremely satisfied with this company. They returned my call immediately, and explained everything to me so clearly. Leeanne was very polite, and efficient in all our conversations. The survey was done within my time frame that I requested. When Mr. Holgan came to do the survey he was very professional. This family owned business is the best in the business. I would highly recommend to anyone, and will definitely be using them in the future. Thank you!

erin martin Avatar erin martin
July 1, 2020