Instead of such suit and decree of sale, the mortgagee or his assignee may, upon breach of the condition, give such notices and do all such acts as are authorized or required by the power, including the giving of a foreclosure deed upon the completion of said foreclosure; but no sale under and by virtue of such power shall be valid and effectual to foreclose such mortgage unless the following conditions are complied with:
1899, 19:3. 1905, 2:1. 1923, 115:1. PL 215 :23. RL 261:23. RSA 479:25. 1967, 187:1. 1977, 401:1. 1979, 224:1. 1985, 248:1. 1990, 167:4. 1991, 203:2, 3. 1993, 206:1, eff. Aug. 8, 1993. 2015, 177:1, eff. Jan. 1, 2016.