Office building · Long Island City, Queens
23-10 43rd Avenue
Long Island City, NY 11101
23-10 43rd Avenue is a 5-floor office building in Long Island City, Queens, built in 1931, with about 98,000 square feet of office space according to city records.
Also at 43-01 to 43-09 23rd Street, 43-02 to 43-10 24th Street and 23-02 to 23-20 43rd Avenue.
- Office space
- 98K SF
- Floors
- 5
- Year built
- 1931
- Zoning
- M1-6/R10
The 30th largest of the 48 office buildings we track in Long Island City. Compare it with 6 neighbors
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Compared with its neighbors
How 23-10 43rd Avenue compares
Next to the 6 nearest large office buildings, all within a 2 minute walk, 23-10 43rd Avenue ranks 5th of 7 by office floor area. It went up in 1931; the median neighbor dates from 1924. Its property tax is fully exempt on the city's assessment roll.
| Building | Office space | Floors | Built | Tax / SF | Last sale |
|---|---|---|---|---|---|
| 23-10 43rd Avenue | 98K SF | 5 | 1931 | Exempt | Apr 2023, $50M |
| 43-10 23rd Street | 151K SF | 7 | 1924 | $10.37 | Jul 2026, $86.9M |
| 24-01 44th Road | 274K SF | 16 | 2005 | $3.75 | n/a |
| 22-15 43rd Avenue | 48K SF | 4 | 1918 | $6.71 | n/a |
| 43-01 22nd Street | 120K SF | 6 | 1925 | $5.36 | Jul 2016, $62.1M |
| 44-02 23rd Street | 55K SF | 5 | 1919 | $3.73 | n/a |
| 23-21 44th Drive | 441K SF | 15 | 2006 | $1.30 | 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 addresses
- 43-01 to 43-09 23rd Street; 43-02 to 43-10 24th Street; 23-02 to 23-20 43rd Avenue
- ZIP code
- 11101
- Building type
- Office building (city class O2)
- Total floor area
- 97,650 SF
- Commercial floor area
- 97,650 SF
- Office
- 97,650 SF
- Height
- 5 floors
- Average floor
- About 19,500 SF (floor area divided by floors)
- Year built
- 1931
- Last major alteration
- 1995
- Lot area
- 21,156 SF
- Zoning district
- M1-6/R10
- Built FAR
- 4.62
- Max commercial FAR
- 10
- Tax lot (BBL)
- 4004360021
Nearest subway
- Court Sq-23 St
- Queensboro Plaza
- Queens Plaza
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 NEW YORK CITY SCHOOL CONSTRUCTION AUTHOR ITY as the owner of record. For tax year 2026/27 the city values 23-10 43rd Avenue at $20.2 million and assesses it at $9.08 million. Exemptions on the roll cover the whole taxable value, which is common for government, nonprofit and payment-in-lieu-of-taxes properties.
- Owner of record
- NEW YORK CITY SCHOOL CONSTRUCTION AUTHOR ITY
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $20,168,000
- Land market value
- $2,645,000
- Assessed value
- $9,075,600
- Exemptions
- $9,075,600
- Estimated yearly tax
- Fully exempt on the roll
City market value by tax year
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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. Exempt properties can still owe charges or payments in lieu of taxes that the roll does not show.
Own or manage 23-10 43rd Avenue? List a space here free and we match it against every active requirement. Renting it out yourself? Read the landlord's checklist.
NYC property records (ACRIS)
Sales history
23-10 43rd Avenue last sold in April 2023 for $50 million, according to the deed recorded with the city. LONG ISLAND CITY CENTER LLC sold it to NEW YORK CITY SCHOOL CONSTRUCTION AUTHORITY. That comes to about $512 per square foot of floor area.
- Last sale (deed date)
- April 5, 2023
- Price
- $50,000,000
- Price per SF of floor area
- About $512
- Seller
- LONG ISLAND CITY CENTER LLC
- Buyer
- NEW YORK CITY SCHOOL CONSTRUCTION AUTHORITY
- Deed recorded
- April 10, 2023
- ACRIS document
- 2023040600589001
Source: NYC Department of Finance, ACRIS, Real Property Master, Legals and Parties, pulled 2026-10-16; prices as the deeds state them, names as recorded (companies and public bodies only). Shown are deeds that move the whole lot for a real price. Transfers between related companies for a nominal sum, sales of partial interests, land sales before the building went up and sales of the company that owns a building are left out.
NYC energy benchmarking (Local Law 84)
Energy score, grade and emissions
23-10 43rd Avenue reported an ENERGY STAR score of 100 out of 100 for 2023 in its Local Law 84 benchmarking filing. Under Local Law 33 that score earns an A (85 or higher). Its site energy use came to 14.7 kBtu per square foot, less than half the national median of 67.7 for a similar property. Its greenhouse gas emissions were about 156 metric tons of CO2e (1.6 kg per square foot).
- ENERGY STAR score (2023)
- 100 of 100
- Grade this score earns (Local Law 33)
- A (85 or higher)
- Property type (Portfolio Manager)
- Office
- Site energy use intensity
- 14.7 kBtu/SF
- National median for the type
- 67.7 kBtu/SF
- Greenhouse gas emissions
- 156 t CO2e
- Emissions per SF
- 1.6 kg CO2e
- Floor area in the filing
- 97,650 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.
NYC Department of Buildings permits
Work permits and build-outs
In the 12 months to October 2026, the Department of Buildings issued first permits for 6 jobs at 23-10 43rd Avenue. In the last two years, interior work was permitted on 5 floors (floors 1 to 5 and the cellar). The newest build-out, on floors 1 to 5, the cellar and the roof, was first permitted in June 2025 (construction, mechanical, plumbing, sprinklers, standpipe, structural, neighbor protection; filed cost estimate $3.7 million). A sidewalk shed permit here is active until November 9, 2026.
- New jobs, last 12 months
- 6
- Initial permits, last 12 months
- 13
- Newest job first permitted
- October 2026
- Interior build-outs, last 24 months
- 1
- Floors with interior work, last 24 months
- 1 to 5, cellar
- Facade and sidewalk jobs, last 24 months
- 9
- Sidewalk shed permit
- Active until Nov 9, 2026
Recent build-outs
New jobs by year
Build-outs across Long Island CityWhere NYC offices are being built out
Source: NYC Department of Buildings, DOB NOW: Build Approved Permits, pulled 2026-10-24 (permits issued through 2026-10-22). A job counts once, when its first permit is issued; renewals are not new work. A build-out groups jobs on the same floors first permitted within 120 days of each other. Costs are the estimates filed with the jobs. Jobs filed before DOB NOW (in the older BIS system) are not counted. A permit is approval to do the work; it does not say who the work is for or whether it is finished.
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Questions about 23-10 43rd Avenue
How big is 23-10 43rd Avenue?
23-10 43rd Avenue has about 98,000 square feet of floor area in total, including 98,000 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 23-10 43rd Avenue built?
City records list 1931 as the year built, with a major alteration recorded in 1995. The building is 5 floors tall.
What other addresses does 23-10 43rd Avenue have?
City records list 43-01 to 43-09 23rd Street, 43-02 to 43-10 24th Street and 23-02 to 23-20 43rd Avenue on the same tax lot (BBL 4004360021) as 23-10 43rd Avenue. A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 23-10 43rd Avenue?
23-10 43rd Avenue is in ZIP code 11101, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 23-10 43rd Avenue, Long Island City, NY 11101.
What is the zoning at 23-10 43rd Avenue?
The lot is in the M1-6/R10 zoning district. PLUTO lists a built floor area ratio (FAR) of 4.62 and a maximum commercial FAR of 10 for this lot.
What subway station is closest to 23-10 43rd Avenue?
The closest subway station to 23-10 43rd Avenue is Court Sq-23 St (the E, F, 7 and G trains, connected to Court Sq), about 850 feet away in a straight line, roughly 3 minutes on foot. The MTA lists it as partly accessible. Also nearby: Queensboro Plaza (the 7, N and W trains), 4 min walk; Queens Plaza (the E, F and R trains), 7 min walk. Walking times are straight-line estimates; the street route is longer.
Who owns 23-10 43rd Avenue?
The NYC Department of Finance's 2026/27 assessment roll lists NEW YORK CITY SCHOOL CONSTRUCTION AUTHOR ITY as the owner of record of 23-10 43rd Avenue (BBL 4004360021). Deeds and mortgages for the lot are public in ACRIS, the city's property records system.
When was 23-10 43rd Avenue last sold?
23-10 43rd Avenue last sold in April 2023 for $50 million, according to the deed recorded with the city. LONG ISLAND CITY CENTER LLC sold it to NEW YORK CITY SCHOOL CONSTRUCTION AUTHORITY. That comes to about $512 per square foot of floor area. The deed is ACRIS document 2023040600589001 (BBL 4004360021) in the city's property records. A sale of the company that owns a building is not recorded as a deed, so it would not show there.
What is the energy grade of 23-10 43rd Avenue?
23-10 43rd Avenue reported an ENERGY STAR score of 100 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 100 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 14.7 kBtu per square foot, less than half the national median of 67.7 for a similar property. Its greenhouse gas emissions were about 156 metric tons of CO2e (1.6 kg per square foot).
Is there construction at 23-10 43rd Avenue?
In the 12 months to October 2026, the Department of Buildings issued first permits for 6 jobs at 23-10 43rd Avenue. In the last two years, interior work was permitted on 5 floors (floors 1 to 5 and the cellar). The newest build-out, on floors 1 to 5, the cellar and the roof, was first permitted in June 2025 (construction, mechanical, plumbing, sprinklers, standpipe, structural, neighbor protection; filed cost estimate $3.7 million). A sidewalk shed permit here is active until November 9, 2026. These are the Department of Buildings' DOB NOW work permits for tax lot 4004360021. A permit is approval to do the work; it does not say who the work is for or whether it is finished.
What are the property taxes at 23-10 43rd Avenue?
The Department of Finance's 2026/27 assessment roll lists exemptions covering the whole taxable value of 23-10 43rd Avenue, so there is no property tax on the roll to estimate. That is common for government, nonprofit and payment-in-lieu-of-taxes (PILOT) properties. The city's property tax records for BBL 4004360021 show what is actually billed.
What is the assessed value of 23-10 43rd Avenue?
For tax year 2026/27, the NYC Department of Finance puts the market value of 23-10 43rd Avenue at $20.2 million ($2.65 million of it land) and its assessed value at $9.08 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 10% from 2022/23 ($18.4 million) to 2026/27.
Is there office space for lease at 23-10 43rd Avenue?
No space at 23-10 43rd Avenue 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.
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