Sean William Costello
- Verified against the New York State attorney registration file, July 2026
16 years in practice
First admitted in 2010
First admitted in 2010
- 2010 Admitted, New York
Overview
Sean William Costello is an attorney admitted in New York (since 2010), based in Niagara Falls, NY.
This profile is built from public bar records and shows only what those records contain. Sean has not written or endorsed anything on this page.
Jurisdictions admitted
| Jurisdiction | Admitted | Bar number | Status |
|---|---|---|---|
| New York | 2010 | #4781118 | Active |
Education
- Syracuse Univ. College of LawLaw school, per the bar record
Contact and offices
Registered office
Niagara Falls, NY
The address and number above come from the attorney's public bar registration, which can lag a recent move. Confirm before visiting.
Other attorneys in Niagara Falls
Ordered by years licensed, from the same public records.
Sources for this profile: the New York State attorney registration file. License status can change; check the bar's own record for the current status before hiring. Updated July 12, 2026.