We did work as a subcontractor for some schools, and have not been paid retainage. We filed a notice of non payment in March of 2021 and nothing has been paid or filed since then. Do we have any recourse to file a lien?
If the school is a public school, then there should be a payment bond. If the school is publicly owned, you cannot file a mechanic's lien, but could file a payment bond claim. The payment bond claim should be in the form of a sworn statement of account to both the payment bond surety, and the prime contractor. You can review such form at The Construction Report at the following link:
http://www.TheConstructionReport.org
If the school is privately owned or is leased by a private entity, then you may have mechanic's lien rights.
Retain a construction attorney to evaluate your legal situation and to provide advice.
Good luck.