Office building · Sheepshead Bay, Brooklyn
2450 Knapp Street
Brooklyn, NY 11235
2450 Knapp Street is a 2-floor office building in Sheepshead Bay, Brooklyn, built in 1961, with about 44,000 square feet of office space according to city records.
Also at 2424-2450 Knapp Street.
- Office space
- 44K SF
- Floors
- 2
- Year built
- 1961
- Zoning
- R3-2
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Compared with its neighbors
How 2450 Knapp Street compares
Next to the 6 nearest large commercial buildings, all within a 20 minute walk, 2450 Knapp Street is the smallest by commercial floor area. It went up in 1961; the median neighbor dates from 1994. Its estimated property tax, about $5.69 a square foot of floor area before abatements, is below the neighbors' median of $8.08.
| Building | Commercial space | Floors | Built | Tax / SF | Last sale |
|---|---|---|---|---|---|
| 2450 Knapp Street | 44K SF | 2 | 1961 | $5.69 | n/a |
| 2461 Knapp Street | 83K SF | 3 | 1993 | $7.34 | Oct 2005, $6.5M |
| 3861 Nostrand Avenue | 81K SF | 1 | 1960 | $11.55 | Dec 2018, $38.3M |
| 2727 Knapp Street | 103K SF | n/a | 2015 | $6.57 | n/a |
| 3860 Nostrand Avenue | 74K SF | 2 | 1959 | $11.09 | Aug 2019, $27.6M |
| 2027 Emmons Avenue | 120K SF | 2 | 1996 | $5.73 | n/a |
| 3121 Ocean Avenue | 81K SF | 5 | 2022 | $8.82 | n/a |
Sources: NYC Department of City Planning, PLUTO 26v2 for size, floors and year built; NYC Department of Finance 2026/27 roll for tax (taxable value times the class rate, before abatements, over the whole floor area); ACRIS for the last deed that moved the whole lot for a real price (a price for several lots is their combined price; condominiums sell by the unit and show n/a). Large means at least 35,000 SF of the building's main use. Walking times are straight-line estimates.
NYC tax lot records
Building facts
- Other address
- 2424-2450 Knapp Street
- ZIP code
- 11235
- Building type
- Office building (city class O2)
- Total floor area
- 44,000 SF
- Commercial floor area
- 44,000 SF
- Office
- 44,000 SF
- Height
- 2 floors
- Year built
- 1961
- Last major alteration
- 2005
- Lot area
- 40,000 SF
- Zoning district
- R3-2
- Built FAR
- 1.1
- Tax lot (BBL)
- 3074290016
Nearest subway
- Neck Rd
Other ways around Sheepshead Bay
- Belt Parkway
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-16; addresses from the Property Address Directory (PAD) 26b; subway stations from the MTA Subway Stations dataset, pulled 2026-10-16. Floor areas are the city's estimates for the whole building, not available space. Walking times are straight-line estimates. How we build these pages. Something wrong on this page? Tell us.
NYC Department of Finance records
Owner, property tax and assessed value
The Department of Finance lists 2450 KNAPP STREET ASSCIATES as the owner of record. For tax year 2026/27 the city values 2450 Knapp Street at $5.75 million and assesses it at $2.59 million. After phase-ins and exemptions its taxable value is $2.31 million; at the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists) that comes to about $250,172 a year before abatements, roughly $5.69 per square foot of floor area. Commercial leases here often pass a tenant's share of tax increases over a base year through as additional rent.
- Owner of record
- 2450 KNAPP STREET ASSCIATES
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $5,752,000
- Land market value
- $1,269,000
- Assessed value
- $2,588,400
- Taxable value (phased in)
- $2,306,160
- Estimated yearly tax
- About $250,172
- Tax per SF of floor area
- About $5.69
City market value by tax year
Manage or lease this building? Claim this page. Requests are reviewed by hand.
How to find who owns any NYC buildingSource: NYC Department of Finance, Property Valuation and Assessment Data (2026/27 roll; owner names as the roll records them, which cuts some long names short), pulled 2026-10-16; tax rate from the Department of Finance tax rates page, checked 2026-09-28. The estimate is the taxable value times the class rate. It leaves out abatements, payment-in-lieu-of-taxes agreements and charges, so the actual bill can differ.
Own or manage 2450 Knapp Street? List a space here free and we match it against every active requirement. Renting it out yourself? Read the landlord's checklist.
NYC energy benchmarking (Local Law 84)
Energy score, grade and emissions
2450 Knapp Street reported an ENERGY STAR score of 80 out of 100 for 2023 in its Local Law 84 benchmarking filing. Under Local Law 33 that score earns a B (70 to 84). Its site energy use came to 44.5 kBtu per square foot, 37% below the national median of 70.2 for a similar property. Its greenhouse gas emissions were about 181 metric tons of CO2e (4.1 kg per square foot).
- ENERGY STAR score (2023)
- 80 of 100
- Grade this score earns (Local Law 33)
- B (70 to 84)
- Property type (Portfolio Manager)
- Office
- Site energy use intensity
- 44.5 kBtu/SF
- National median for the type
- 70.2 kBtu/SF
- Greenhouse gas emissions
- 181 t CO2e
- Emissions per SF
- 4.1 kg CO2e
- Floor area in the filing
- 44,000 SF
ENERGY STAR score by year
Energy sources in 2023
Source: NYC Department of Buildings and Mayor's Office of Climate and Environmental Justice, NYC Building Energy and Water Data Disclosure for Local Law 84 (2023 filing), pulled 2026-10-16; grade cutoffs from the Department of Buildings energy grades page. Figures are as the owner filed them in ENERGY STAR Portfolio Manager. The grade is the one the filed score earns under the law's cutoffs; the Department of Buildings assigns the grade a building posts, which can differ.
No office space listed in Sheepshead Bay yet
The closest real space on Leasemark is below. Own or broker space at 2450 Knapp Street? List it free: it shows on this page and is matched against every active requirement the day it goes up.
Real space close by
Listed now by its owner or broker. Open it and tap I'm interested to ask the lister for an intro; contact details are shared once both sides accept.
Next door, in Midwood
866 East 29 Street Brooklyn Ny 11210
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Questions about 2450 Knapp Street
How big is 2450 Knapp Street?
2450 Knapp Street has about 44,000 square feet of floor area in total, including 44,000 square feet of office, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.
When was 2450 Knapp Street built?
City records list 1961 as the year built, with a major alteration recorded in 2005. The building is 2 floors tall.
What other addresses does 2450 Knapp Street have?
City records list 2424-2450 Knapp Street on the same tax lot (BBL 3074290016) as 2450 Knapp Street. A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 2450 Knapp Street?
2450 Knapp Street 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 2450 Knapp Street, Brooklyn, NY 11235, in Sheepshead Bay.
What is the zoning at 2450 Knapp Street?
The lot is in the R3-2 zoning district. PLUTO lists a built floor area ratio (FAR) of 1.1 for this lot.
What subway station is closest to 2450 Knapp Street?
No subway within a short walk of 2450 Knapp Street: the nearest station is more than 1,600 meters away (about 20 minutes on foot before allowing for the street route). The closest subway station to 2450 Knapp Street is Neck Rd (the Q train), about 1.2 miles away in a straight line; the street route is longer. Other ways around Sheepshead Bay: Belt Parkway. These are neighborhood connections, not directions from the building.
Who owns 2450 Knapp Street?
The NYC Department of Finance's 2026/27 assessment roll lists 2450 KNAPP STREET ASSCIATES as the owner of record of 2450 Knapp Street (BBL 3074290016). Deeds and mortgages for the lot are public in ACRIS, the city's property records system.
What is the energy grade of 2450 Knapp Street?
2450 Knapp Street reported an ENERGY STAR score of 80 for calendar year 2023 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 80 earns a B. 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 44.5 kBtu per square foot, 37% below the national median of 70.2 for a similar property. Its greenhouse gas emissions were about 181 metric tons of CO2e (4.1 kg per square foot).
What are the property taxes at 2450 Knapp Street?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $2.31 million for 2450 Knapp Street. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $250,172 a year, roughly $5.69 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 3074290016 show the actual bill.
What is the assessed value of 2450 Knapp Street?
For tax year 2026/27, the NYC Department of Finance puts the market value of 2450 Knapp Street at $5.75 million ($1.27 million of it land) and its assessed value at $2.59 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 29% from 2022/23 ($4.45 million) to 2026/27.
Is there office space for lease at 2450 Knapp Street?
No space at 2450 Knapp Street 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.
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Transit hubs in Sheepshead Bay
- B Q at Sheepshead Bay
- Q at Neck Rd
- Belt Parkway