45 Main Street

45 Main Street has about 476,000 square feet of floor area in total, including 275,000 square feet of office, 49,000 square feet of retail and 118,000 square feet of industrial and storage space, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.

The Landmarks Preservation Commission's building records date 45 Main Street to 1919, designed by William Higginson. City tax records list 1906 as the year built. The building is 12 floors tall.

William Higginson, according to the Landmarks Preservation Commission's building records, which list the style as Industrial Neoclassical and its original use as a factory.

City records list 73-95 Front Street, 35-53 Main Street, 40-58 Washington Street and 88-110 Water Street on the same tax lot (BBL 3000370001) as 45 Main Street. A space listed on Leasemark at any of these addresses shows up on this page.

45 Main Street is in ZIP code 11201, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 45 Main Street, Brooklyn, NY 11201, in Dumbo.

The lot is in the M1-2/R8A zoning district. PLUTO lists a built floor area ratio (FAR) of 9.72 and a maximum commercial FAR of 2 for this lot. It is inside the DUMBO Historic District, so exterior changes go through the Landmarks Preservation Commission.

The closest subway station to 45 Main Street is York St (the F train), about 0.2 miles away in a straight line, roughly 4 minutes on foot. Also nearby: High St (the A and C trains), 5 min walk; Clark St (the 2 and 3 trains), 8 min walk. Walking times are straight-line estimates; the street route is longer.

The NYC Department of Finance's 2026/27 assessment roll lists 45 MAIN ASSOCIATES LLC as the owner of record of 45 Main Street (BBL 3000370001). 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.

Leasemark does not have the building's tenant roster, but SEC filings name companies with offices at 45 Main Street. One investment manager files 13F holdings reports from the address: General Equity Holdings LP. Private companies do not file with the SEC, so the full list of tenants is longer, and a company can also report a building it owns.

45 Main Street reported an ENERGY STAR score of 90 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 90 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 42 kBtu per square foot, less than half the national median of 87.1 for a similar property. Its greenhouse gas emissions were about 1,956 metric tons of CO2e (3.95 kg per square foot).

In the 12 months to October 2026, the Department of Buildings issued first permits for 3 jobs at 45 Main Street. In the last two years, interior work was permitted on one floor (floor 1 and the cellar). The newest build-out, on floor 1, was first permitted in January 2026 (construction; filed cost estimate $45,000). These are the Department of Buildings' DOB NOW work permits for tax lot 3000370001. 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 $51 million for 45 Main Street. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $5.54 million a year, roughly $11.63 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 3000370001 show the actual bill.

For tax year 2026/27, the NYC Department of Finance puts the market value of 45 Main Street at $115.3 million ($4.5 million of it land) and its assessed value at $51.9 million, the 45% of market value the city assesses for Class 4 property. The city's market value held steady from 2022/23 to 2026/27.

Owners registered 14 storefronts at 45 Main Street for December 31, 2025, the newest annual filing the city has published, and none stood vacant that day. A year earlier, 1 of 12 stood vacant. These are the owners' filings with the Department of Finance under Local Law 157, so a storefront may have come free since. Owners and brokers can list a storefront on Leasemark for free.

No space at 45 Main Street is listed on Leasemark right now. Owners and brokers can list space here for free, and tenants can post a requirement to be matched when space opens up.