FGroup provides on-going expert witness, litigation support and mediation services for cases requiring the expertise, education, and experience of a third-party Independent Licensed Land Surveyor. 

Our Principal, Frank S. Ferrantello, PLS, has provided support services for cases including accident scene documentation and analysis, trip and fall surveys, photo analysis, slope analysis, dispute mediation, “standard of care issues”, construction errors & omissions, encroachment and all types of title, boundary, and easement issues. 


In most instances, we can respond and mobilize survey crews within 48 hours or less if required.

Past cases include historical boundary retracements, exhibit preparation from ground-based or historical aerial surveys, 3D scans and supporting legal services including
mediation, deposition, testimony, and appearances in a jury trial.

Color exhibits can be prepared and digital data and photos can be integrated to help clarify critical issues.

Our Principal holds a Bachelor of Engineering from Hofstra University. That background, combined with over 20 years of personal day to day experience and the entire Ferrantello support team makes him uniquely qualified to assist in legal matters.

awards and Features

AM BEST endorsement

as a top recommended firm.

Point of beginning magazine

Top 100 Firms in USA

BIANCO: Building inspectors Association of Nassau County

Voted #1 Surveyor

305th Engineer Army Regiment:

Certificate of Appreciation for the training of military service members.

XYHT Magazine Top 40 Geospatial

Professionals under 40 years old

Guinness Book of World Records

Recognized as the Offical Surveyors for all future records that require measurements to be performed by a Land Surveyor (World's Longest Feather Boa-June)

Published Articles

Attorney at Law Magazine:

The Old Survey
Easement Can Make or Break a Deal
The Professional Land Surveyor An Essential
Part of the Team
Protect Your Investment
Condemnation & Ownership Rights

Professional Associations

NYAPLS (New York Association of Professional Land Surveyors). Public Relations Board, Standards Board, Strategic Planning committee

NSPS (National Society of Professional Surveying)

ALTA (American Land Title Association)

ACSM (American Congress of Surveying and Mapping)

NSCE (Nassau Suffolk Civil Engineers & Land Surveyors Association) – (Director 2013-2015, Vice President 2015-2017, President 2017-present)

ASCE (American Society of Civil Engineers)

NYLTA (New York Land Title Association)

AIA (American Institute of Architects)

Areas of Expertise

Land & Building Surveying & Mapping
Trip & Fall, Slip & Fall
Accident & Site Mapping
Boundary Disputes
Adverse Possession
Right of Way & Easements
Zoning & Land Use Planning
Flood Plain, Elevation, Datum & Grading Drainage Issues
Land Development & Earthwork
Utility & Mark Out Issues
Professional Negligence
Standard of Care Evaluation

Professional Work Experience

Mr. Ferrantello has been retained by a vast number of law firms, insurance companies, and municipalities. Mr. Ferrantello has extensive experience with diverse projects including:

Expert Surveys



Testimony for Damages & Injuries

Site Planning
Subdivision Consulting

Examining Title Records, Deeds &

Other Recorded Documents

Ingress & Egress

Pedestrian Easements

Right of Ways

Air & Development Rights

Vista Easements

Bridle Paths


Bathing & Mooring Rights

Covenants & Restrictions

Real Property

Zoning & Other Land Use Principles

Extensive knowledge of the local Long
Island zoning codes, site planning, and
subdivision regulations.