Moses Eckstein
Cornerstone Group
(The Cornerstone Group)
Owner
1358 47th Street Brooklyn, NY 11219
Cornerstone Group NYC portfolio
$59.2 million -elevator 87%, industrial 5%, mixed-use 4%; Brooklyn 50%, Queens 44%, Bronx 5%*
2084th largest portfolio by dollar value
576,922 sqft – elevator 98%; Brooklyn 67%, Queens 31%
764th largest by SF
11 properties – Brooklyn 72%, Queens 18%, Bronx 9%
980th largest
540 residential units – Brooklyn 67%, Queens 32%
577th largest by residential units
Person Activity past 24 months:
Buyer signatory: 3 for $28.9 million
Borrower signatory: 2 for $16 million
Top Ten Associated Companies:
Robert Miller (2), JPMorgan Chase (2), Mordechai Shlomo Brayer (1), Israel Lawrence Klein (1), Susan Jane Miller (1)
Top Ten Associated People:
Mordechai Shlomo Brayer (1), Robert L. Miller (1), Larry Klein (1), Ursula Flores (1), Susan Jane Miller (1)
Recent activity as signatory:
• Israel Lawrence Klein sold 5303 13th Avenue, Borough Park, Brooklyn for $2.6 million to Cornerstone Group on June 29, 2026.
• Cornerstone Group borrowed $10.5 million from JPMorgan Chase for 67-70 Yellowstone Boulevard on January 21, 2026.
• Susan Jane Miller and Robert Miller sold 67-70 Yellowstone Boulevard for $15 million to Cornerstone Group on January 21, 2026.
• Cornerstone Group borrowed $5.5 million from JPMorgan Chase for 1751 67 Street on January 21, 2026.
• Robert Miller sold 65-60 Booth Street for $11.2 million to Moses Eckstein on September 26, 2024.
• Moses Eckstein sold 1426 44 Street for $3.2 million to Mordechai Shlomo Brayer on May 30, 2023.
Latest Stories:
• Cornerstone Group pays $15M for 109-unit rental in Forest Hills (January 26, 2026)