Be proactive to let the owner know you expect to be paid on time. Issue a bill, including all changes to the scope. State your expectations by phone and in writing.
If you still aren’t being paid, if at all possible, STOP ALL WORK and put everyone you can think of on notice of the unpaid bill, including the owner, general contractor, property manager, mortgage company and tenant.
Send all necessary statutory notices such as whether you are working for a GC or directly for the owner. No notices are required if you are the original/general contractor but send one anyway. Subs and vendors must provide notice no later than the 15th day of the 3rd month following each and every month of unpaid work. If you are still not paid on private work, file your lien by the 15th day of the 4th month following your last day of work.