New York · Lien Law §§10, 17New York mechanic's lien deadlines: eight months, four for single-family homes, one year to foreclose

In New York, a notice of mechanic's lien may be filed in the clerk's office of the county where the property is during the work or within eight months after completion of the contract or the final work or materials; where the improvement is to a single-family dwelling, the window is four months; and a lien for retainage can be filed within 90 days after the retainage was due (N.Y. Lien Law §10(1)). A lien lasts one year after the notice is filed unless within that time an action to foreclose is started and a notice of pendency is filed with the county clerk, or an extension is filed – except that a lien on a single-family dwelling can be extended only by court order; an extension or order lasts at most one year each (§17).