113 Amity Street
Cobble Hill, Brooklyn
Parcel ID (BBL): 3002900013
Owner: Rockrose Development
Acquired: February 18, 2026, $100 million
Built: 1900
Renovated: 2000
SF: 258,000
Dwelling units: 0
No. of buildings: 1
Class: Hospitals, Sanitariums, Mental Institutions (I1)
Floors: 5
Legacy BBLs: 3002900013
Transactions:
• SUNY Downstate Health Sciences University sold 340 Henry Street, Cobble Hill, Brooklyn for $100 million to Rockrose Development on February 18, 2026.
Development:
• Rockrose Development filed major alteration job B01375952 for 298,322 sqft 56 building with 0 apartments in Cobble Hill, Brooklyn, on April 10, 2026.
• Kenneth Holden filed major alteration job 320146980 for 742,671 sqft B building in Cobble Hill, Brooklyn, on April 06, 2010.
• Peter Donohoe filed alteration job B01386653 for 314,628 sqft 51 building with 0 apartments in Cobble Hill, Brooklyn, on April 20, 2026.
• Lee Rose filed alteration job B01039501 for building in Cobble Hill, Brooklyn, on May 01, 2024.
• Lee Rose filed alteration job B01039254 for 4,290 sqft building with 0 apartments in Cobble Hill, Brooklyn, on April 23, 2024.
• Beau Everett filed alteration job B00306498 for 1 sqft B building with 0 apartments in Cobble Hill, Brooklyn, on February 12, 2020.
• William Everett filed alteration job B00194048 for 1 sqft B building with 0 apartments in Cobble Hill, Brooklyn, on August 02, 2019.
Litigation:
• Fortis Property Group filed a $1 million lawsuit 517473/2025 against SUNY Downstate Health Sciences University on May 28, 2025,seeking a judgment related to contractat 340 Henry Street.
• Fortis Property Group filed a $1 million lawsuit 517473/2025 against SUNY Downstate Health Sciences University on May 28, 2025,seeking a judgment related to contractat 340 Henry Street.
• Fortis Property Group filed a $1 million lawsuit 517473/2025 against SUNY Downstate Health Sciences University on May 28, 2025,seeking a judgment related to contractat 340 Henry Street.
Violations:
According to city public data, the properties have received 10 DOB violations and $8,235 in OATH penalties in the last year.