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We Build Relationships to Last
When your case needs more than an opinion, it needs a licensed professional who can defend it under oath.
Boundary disputes, construction defect claims, and property-line accidents in Manhattan rarely come down to who’s right in principle; they come down to who has the data. Without a licensed expert who can produce defensible measurements and stand behind them in a deposition, even a strong case can stall.
Attorneys often bring in a surveyor too late, after opposing counsel has already challenged the accuracy of informal measurements, or after a case has been weakened by testimony that doesn’t withstand cross-examination. By the time that gap is discovered, options are limited and costly.
Ferrantello Group P.C. has served as an expert witness company in Manhattan for attorneys who need more than a survey; they need a witness who can explain it clearly and defend it credibly. As an established expert witness agency in Manhattan, we combine New York State licensure with courtroom experience, delivering expert witness services in Manhattan, New York that hold up from deposition through trial.
New York State–licensed surveyors and engineers, members of NYSAPLS, ACSM, NSPS, and ALTA
Extensive experience providing deposition and trial testimony, not just field reports
Familiar with the borough's dense lot lines, party walls, and complex easement history
Every opinion is backed by field-verified measurements, not assumptions
If you’re hiring an expert witness in Manhattan, our scope of support includes:
As one of the top expert witness firms in Manhattan, we work directly with legal teams from initial case review through final testimony.
We’ve supported litigation involving properties throughout the Upper East Side, Tribeca, Chelsea, Financial District, and Harlem neighborhoods where pre-war construction, air rights, and party-wall history frequently complicate boundary and damage claims. Our familiarity with Manhattan’s property records and DOB filings means our findings are grounded in the same documentation courts expect to see.
Many of our expert witness cases begin with a foundational survey. If your matter requires new boundary or property documentation before testimony can be prepared, our team also provides land survey services in Manhattan, delivering the same field-verified accuracy used in litigation. As professional land surveying experts in Manhattan, we can move a case from initial measurement to courtroom-ready testimony without bringing in a second vendor.
Understanding the legal question and evidentiary needs
On-site measurement, documentation, and data collection
Findings compiled into a clear, defensible report
Deposition and/or trial testimony, prepared alongside your legal team
Litigation support is one part of a larger practice. As a licensed land surveying company offering expert witness, surveying, 3D scanning, and construction documentation services under one roof, we give attorneys a single point of contact for every technical piece of a case.
Whether you’re preparing for a deposition or building a case from the ground up, get a consultation with a licensed, courtroom-experienced team about hiring an expert witness in Manhattan.
An expert witness reviews site conditions, prepares field-verified survey data, and provides professional testimony explaining findings clearly to attorneys, judges, or juries.
An expert witness reviews site conditions, prepares field-verified survey data, and provides professional testimony explaining findings clearly to attorneys, judges, or juries.
If your case involves property boundaries, accident reconstruction, construction defects, or any claim requiring precise measurement and technical interpretation, an expert witness strengthens your evidentiary position.
As early as possible, ideally during initial case preparation. Early involvement allows time for thorough field investigation, report preparation, and deposition readiness.
Yes. Our team includes New York State–licensed surveyors and engineers with direct courtroom testimony experience, credentialed through NYSAPLS, ACSM, NSPS, and ALTA.
We support boundary disputes, vehicular and pedestrian accident cases, property damage claims, easement disputes, and construction defect or delay litigation.