3121 Ocean Avenue

3121 Ocean Avenue has about 81,000 square feet of floor area in total, including 60,000 square feet of office, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.

City records list 2022 as the year built. The building is 5 floors tall.

3121 Ocean Avenue is in ZIP code 11235, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 3121 Ocean Avenue, Brooklyn, NY 11235, in Sheepshead Bay.

The lot is in the R4 zoning district. PLUTO lists a built floor area ratio (FAR) of 3.82 for this lot.

The closest subway station to 3121 Ocean Avenue is Sheepshead Bay (the B and Q trains), about 0.3 miles away in a straight line, roughly 6 minutes on foot. The MTA lists it as an accessible station. Walking times are straight-line estimates; the street route is longer.

The NYC Department of Finance's 2026/27 assessment roll lists CHESTNUT AVENUE LLC as the owner of record of 3121 Ocean Avenue (BBL 3087760072). Big buildings are usually held through a company set up for that one property, so the name on the roll can differ from the landlord's brand or the managing agent. Deeds and mortgages for the lot are public in ACRIS, the city's property records system.

3121 Ocean Avenue reported an ENERGY STAR score of 98 for calendar year 2024 in its Local Law 84 benchmarking filing. Under Local Law 33, as amended by Local Law 95 of 2019, a score of 85 or higher earns an A, 70 to 84 a B, 55 to 69 a C and under 55 a D, so 98 earns an A. The Department of Buildings assigns the grade a building posts, so the posted label can differ if a filing was corrected. Its site energy use came to 20.5 kBtu per square foot, less than half the national median of 67.1 for a similar property. Its greenhouse gas emissions were about 191 metric tons of CO2e (2.36 kg per square foot).

In the 12 months to October 2026, the Department of Buildings issued first permits for 1 job at 3121 Ocean Avenue. In the last two years, interior work was permitted on the cellar. The newest build-out, on the cellar, was first permitted in April 2026 (construction, plumbing; filed cost estimate $15,000). These are the Department of Buildings' DOB NOW work permits for tax lot 3087760072. A permit is approval to do the work; it does not say who the work is for or whether it is finished.

The Department of Finance's 2026/27 assessment roll lists a taxable value of $6.56 million for 3121 Ocean Avenue. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $711,483 a year, roughly $8.82 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 3087760072 show the actual bill.

For tax year 2026/27, the NYC Department of Finance puts the market value of 3121 Ocean Avenue at $15.2 million ($1.48 million of it land) and its assessed value at $6.83 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 1462% from 2022/23 ($972,000) to 2026/27.

No space at 3121 Ocean Avenue is listed on Leasemark right now. Nearby on Leasemark: office space for lease at 866 East 29 Street Brooklyn Ny 11210 in Midwood (16,000 SF, $35/SF/yr). Owners and brokers can list space here for free, and tenants can post a requirement to be matched when space opens up.