Office condominium · Union Square, Manhattan

105 East 17th Street

New York, NY 10003

105 East 17th Street is a 4-floor office condominium in Union Square, Manhattan, built in 1963, with about 91,000 square feet of office space according to city records.

Also at 105-117 East 17th Street and 108-116 East 18th Street.

Office space
91K SF
Floors
4
Year built
1963
Zoning
R8B

The 28th largest of the 41 office buildings we track in Union Square. Compare it with 6 neighbors

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Compared with its neighbors

How 105 East 17th Street compares

Next to the 6 nearest large office buildings, all within a 2 minute walk, 105 East 17th Street ranks 6th of 7 by office floor area. Built in 1963, it is the newest of them. Its property tax is fully exempt on the city's assessment roll.

105 East 17th Street and the 6 nearest large office buildings: size, floors, year built, estimated property tax per square foot
BuildingOffice spaceFloorsBuiltTax / SF
105 East 17th StreetThis building91K SF41963Exempt
215 Park Avenue South1 min walk275K SF201910$16.60
225 Park Avenue South1 min walk181K SF191910$18.46
35 Irving Place1 min walk288K SF121909$20.56
233 Park Avenue South1 min walk137K SF121909$20.74
Everett Building, 200 Park Avenue South1 min walk224K SF161908$23.86
116 East 16th Street2 min walk52K SF121910$11.33
The 28th largest of the 41 office buildings we track in Union Square: see the full list

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). Large means at least 50,000 SF of the building's main use. Walking times are straight-line estimates.

NYC tax lot records

Building facts

Other addresses
105-117 East 17th Street; 108-116 East 18th Street
ZIP code
10003
Building type
Office condominium (city class RB)
Total floor area
91,158 SF
Commercial floor area
91,158 SF
Office
91,158 SF
Height
4 floors
Average floor
About 22,800 SF (floor area divided by floors)
Year built (tax records)
1960
Lot area
28,779 SF
Zoning district
R8B
Built FAR
3.17
Landmark status
Individual landmark
Tax lot (BBL)
1008737502

Nearest subway

  • 14 St-Union Sq3 min walk · Accessible station
  • 23 St-Baruch College5 min walk · Accessible station
  • 3 Av5 min walk · Not accessible

Nearby large buildings

Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-09-30; addresses from the Property Address Directory (PAD) 26b; subway stations from the MTA Subway Stations dataset, pulled 2026-10-02. 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 storefront registry (Local Law 157)

Storefronts and vacancy

Owners registered one storefront at 105 East 17th Street for December 31, 2024, the newest annual filing the city has published, and it was not vacant that day.

Storefronts registered for December 31, 2024
1
Vacant that day
0
Share vacant across Union Square
10.6%
Share vacant citywide
8.7%
Condominium tax lots that filed
1

Vacant on December 31, by year

  • 2019None registered
  • 2020None registered
  • 2021None registered
  • 2022None registered
  • 20230 of 1
  • 20240 of 1

Bars show the share of the lot's registered storefronts that stood vacant.

Source: NYC Department of Finance, Storefronts Reported Vacant or Not (Local Law 157), annual filings for 2019 to 2024, pulled 2026-10-02. Owners of buildings with ground- or second-floor storefronts register each one every year with its status on December 31; counts are by tax lot, summed over the condominium's unit lot that filed, as the owners filed them. The 2024 filing was due June 3, 2025, so a storefront vacant then may have been leased since. A vacant storefront is not always on the market, and none here is listed on Leasemark unless it shows above.

NYC Department of Finance records

Owner, property tax and assessed value

105 East 17th Street is a condominium of 3 tax lots. 105 EAST 17TH STREET ASSOCIATES LLC owns the units that make up 100% of its market value. For tax year 2026/27 the city values 105 East 17th Street at $58.5 million and assesses it at $26.3 million. Exemptions on the roll cover the whole taxable value, which is common for government, nonprofit and payment-in-lieu-of-taxes properties.

Largest unit owner
105 EAST 17TH STREET ASSOCIATES LLC (100% of market value)
Tax class
Class 4 (commercial and industrial)
City market value
$58,452,001
Land market value
$23,435,000
Assessed value
$26,303,401
Exemptions
$26,303,401
Estimated yearly tax
Fully exempt on the roll
Condominium tax lots
3
Owners of record
1

City market value by tax year

  • 2022/23$56.6 million
  • 2023/24$61.1 million
  • 2024/25$63.4 million
  • 2025/26$64.9 million
  • 2026/27$58.5 million

Market value rose 3% from 2022/23 ($56.6 million) to 2026/27.

How Union Square compares: property tax per SF across NYC neighborhoods

Source: NYC Department of Finance, Property Valuation and Assessment Data (2026/27 roll, summed over 3 condominium tax lots; owner names as the roll records them, which cuts some long names short), pulled 2026-10-02. Exempt properties can still owe charges or payments in lieu of taxes that the roll does not show.

NYC energy benchmarking (Local Law 84)

Energy score, grade and emissions

105 East 17th Street reported an ENERGY STAR score of 96 out of 100 for 2024 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 39.8 kBtu per square foot, less than half the national median of 110.3 for a similar property. Its greenhouse gas emissions were about 449 metric tons of CO2e (4.11 kg per square foot).

ENERGY STAR score (2024)
96 of 100
Grade this score earns (Local Law 33)
A (85 or higher)
Property type (Portfolio Manager)
Office
Site energy use intensity
39.8 kBtu/SF
National median for the type
110.3 kBtu/SF
Greenhouse gas emissions
449 t CO2e
Emissions per SF
4.11 kg CO2e
Floor area in the filing
109,350 SF

ENERGY STAR score by year

  • 202286 (A)
  • 202392 (A)
  • 202496 (A)

Energy sources in 2024

  • Electricity76%
  • District steam24%

Share of the energy used on site, as filed.

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 (2024 filing), pulled 2026-10-02; 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 September 2026, the Department of Buildings issued first permits for 1 job at 105 East 17th Street. In the last two years, interior work was permitted on one floor (floor 4 and the basement). The newest build-out, on floor 4, was first permitted in February 2026 (construction, mechanical; filed cost estimate $28,000).

New jobs, last 12 months
1
Initial permits, last 12 months
2
Newest job first permitted
February 2026
Interior build-outs, last 24 months
2
Floors with interior work, last 24 months
4, basement

Recent build-outs

  • Floor 4February 2026Construction, Mechanical; est. $28,000
  • BasementDecember 2024Construction; est. $50,000

New jobs by year

  • 20210
  • 20220
  • 20233
  • 20245
  • 20250
  • 2026 to date1

Source: NYC Department of Buildings, DOB NOW: Build Approved Permits, pulled 2026-10-02 (permits issued through 2026-09-30). 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.

Landmarks Preservation Commission records

Architecture and history

105 East 17th Street was designed by Skidmore, Owings & Merrill (Roger Radford) and built in 1959-1963 in the International Style. The Landmarks Preservation Commission designated Guardian Life Insurance Company of America Annex, on this tax lot, a New York City landmark on November 18, 2008.

Architect
Skidmore, Owings & Merrill (Roger Radford)
Constructed
1959-1963
Style
International Style
Primary material
Aluminum
Built as
Office building
Landmark on this lot
Guardian Life Insurance Company of America Annex: individual landmark, designated November 18, 2008 (LP-02247)

Source: NYC Landmarks Preservation Commission, Individual Landmark Sites and Individual Landmark and Historic District Building Database on NYC Open Data, pulled 2026-10-02. A designation can cover part of a lot, such as a facade or a lobby interior.

Office space nearby in Union Square

Nothing is listed nearby yet. The labeled examples below show how a space appears; they are not on the market.

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No live requirements for office space in Union Square yet. These labeled examples show what tenants post. List a space in 105 East 17th Street and we match it against every new one automatically.

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Questions about 105 East 17th Street

How big is 105 East 17th Street?

105 East 17th Street has about 91,000 square feet of floor area in total, including 91,000 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 105 East 17th Street built?

The Landmarks Preservation Commission's building records date 105 East 17th Street to 1959-1963, designed by Skidmore, Owings & Merrill (Roger Radford). City tax records list 1960 as the year built. The building is 4 floors tall.

Who designed 105 East 17th Street?

Skidmore, Owings & Merrill (Roger Radford), according to the Landmarks Preservation Commission's building records, which list the style as International Style and its original use as an office building.

Is 105 East 17th Street a New York City landmark?

The tax lot at 105 East 17th Street includes Guardian Life Insurance Company of America Annex, an individual landmark designated November 18, 2008 (LP-02247). Changes to a designated landmark, including many storefront, window and signage changes, need a permit from the Landmarks Preservation Commission.

What other addresses does 105 East 17th Street have?

City records list 105-117 East 17th Street and 108-116 East 18th Street on the same tax lot (BBL 1008737502) as 105 East 17th Street. A space listed on Leasemark at any of these addresses shows up on this page.

What is the ZIP code of 105 East 17th Street?

105 East 17th Street is in ZIP code 10003, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 105 East 17th Street, New York, NY 10003, in Union Square.

What is the zoning at 105 East 17th Street?

The lot is in the R8B zoning district. PLUTO lists a built floor area ratio (FAR) of 3.17 for this lot.

What subway station is closest to 105 East 17th Street?

The closest subway station to 105 East 17th Street is 14 St-Union Sq (the 4, 5, 6, L, N, Q, R and W trains), about 750 feet away in a straight line, roughly 3 minutes on foot. The MTA lists it as an accessible station. Also nearby: 23 St-Baruch College (the 6 train), 5 min walk; 3 Av (the L train), 5 min walk. Walking times are straight-line estimates; the street route is longer.

Who owns 105 East 17th Street?

105 East 17th Street is a condominium of 3 tax lots. 105 EAST 17TH STREET ASSOCIATES LLC owns the units that make up 100% of its market value. That is from the NYC Department of Finance's 2026/27 assessment roll (BBL 1008737502). Deeds and mortgages for each unit are public in ACRIS, the city's property records system.

What is the energy grade of 105 East 17th Street?

105 East 17th Street reported an ENERGY STAR score of 96 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 96 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 39.8 kBtu per square foot, less than half the national median of 110.3 for a similar property. Its greenhouse gas emissions were about 449 metric tons of CO2e (4.11 kg per square foot).

Is there construction at 105 East 17th Street?

In the 12 months to September 2026, the Department of Buildings issued first permits for 1 job at 105 East 17th Street. In the last two years, interior work was permitted on one floor (floor 4 and the basement). The newest build-out, on floor 4, was first permitted in February 2026 (construction, mechanical; filed cost estimate $28,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1008737502. 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 105 East 17th Street?

The Department of Finance's 2026/27 assessment roll lists exemptions covering the whole taxable value of 105 East 17th Street (the sum of its 3 condominium tax lots), 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 1008737502 show what is actually billed.

What is the assessed value of 105 East 17th Street?

For tax year 2026/27, the NYC Department of Finance puts the market value of 105 East 17th Street at $58.5 million ($23.4 million of it land) and its assessed value at $26.3 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 3% from 2022/23 ($56.6 million) to 2026/27.

Are there vacant storefronts at 105 East 17th Street?

Owners registered one storefront at 105 East 17th Street for December 31, 2024, the newest annual filing the city has published, and it was not vacant that day. 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.

Is there office space for lease at 105 East 17th Street?

No space at 105 East 17th 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.

1,677 buildings from city records

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