Three more Connecticut companies this month placed mechanic’s liens on the New Canaan home being built by the estranged husband of a missing local mom of five. O&G Industries ($13,654.33), Peter Kupchick Heating & Cooling Inc. ($10,000) and plumber Richard Belonick ($26,250) all filed liens in state Superior Court in connection with materials and services provided at 61 Sturbridge Hill Road. Fotis Dulos’s Fore Group Inc. construction company is nearly finished building a 7,300-square-foot home there. A Meriden-based lumber company earlier this year filed a $19,000 lien. Fotis Dulos and his girlfriend, Michelle Troconis, are out on $500,000 bond each after New Canaan Police charged them with tampering and hindering in the case of Jennifer Dulos, missing since May 24.