Frank Dubinsky
Monadnock Development
(Monadnock Construction)
Owner, Developer
Monadnock Development NYC portfolio
$1.9 billion -elevator 23%, development 18%, industrial 15%; Brooklyn 56%, Manhattan 31%, Bronx 11%*
122th largest portfolio by dollar value
2,374,252 sqft – elevator 57%, walkup 16%, D7 9%; Manhattan 73%, Bronx 15%, Brooklyn 10%
200th largest by SF
85 properties – Manhattan 43%, Brooklyn 42%, Bronx 12%
83th largest
4,164 residential units – Manhattan 59%, Brooklyn 31%, Bronx 8%
68th largest by residential units
Person Activity past 24 months:
Developer (new building or major alteration): 39 for 415,944 square feet
Recent activity as signatory:
• Frank Dubinsky filed plans for new building for 415,944 sqft in East Flatbush, Brooklyn, on December 12, 2025.
• Frank Dubinsky filed plans for new building for 316,634 sqft in Gowanus, Brooklyn, on December 08, 2021.
• Frank Dubinsky filed plans for new building for 226,569 sqft in Flushing, Queens, on March 07, 2016.