---
title: "Keystone Material Testing, L.L.C., Binghamton, NY | Mold Roster"
description: "Keystone Material Testing, L.L.C.: mold assessment in Binghamton, NY. NYS DOL licence details, contact and free quotes."
canonical: https://moldroster.com/ny/firms/keystone-material-testing-l-l-c-ny0953/
---

# Keystone Material Testing, L.L.C.

* Mold assessment
* Licensed by NYS DOL (New York State Department of Labor)
* Binghamton, NY (Broome County)
* Address: 58 Exchange St, Binghamton, NY
* Phone: (607) 723-5117
* Website: https://www.kecompanies.com/
* Mold Assessment Contractor License (SH125) #26-6LI8I-SHMO (exp. 2028-01-31)

Added by us, not on the state list: website from the firm's [Google Maps listing](https://maps.google.com/?cid=7134123039378909095&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA), retrieved 2026-10-30.

Source: https://data.ny.gov/Government-Finance/Mold-Contractor-Licenses-Four-Year-Window/ikqx-ispy, retrieved 2026-10-12. Verify: https://dol.ny.gov/mold-program. Claim / correct: https://moldroster.com/claim-listing/?id=NY0953