Seeking 1,800 SF Creative Loft in Chelsea, Manhattan
Posted by a tenant rep broker · Creative / Arts / Media
- Where
- Chelsea
- Size
- 1,800 to 1,800 SF
- Budget
- to $43/SF
- Move in
- Nov 2026
High ceilingsNear subway
Owners: got a fit?I have a fit
Office building · Chelsea, Manhattan
IAC Building
555 West 18th Street, New York, NY 10011
The IAC Building (555 West 18th Street) is a 10-floor office building in Chelsea, Manhattan, built in 2007, with about 195,000 square feet of office space according to city records.
Also at 80-94 Eleventh Avenue, 527-555 West 18th Street and 532-542 West 19th Street.
- Office space
- 195K SF
- Floors
- 10
- Year built
- 2007
- Zoning
- C6-3
The 2nd largest of the 19 office buildings we track in Chelsea. Compare it with 6 neighbors
1 tenant is looking for office space in Chelsea: 1,800 to 1,800 SF, up to $43/SF. A space listed here that fits is matched with it the day it goes up.
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Compared with its neighbors
How the IAC Building compares
Next to the 6 nearest large office buildings, all within a 3 minute walk, the IAC Building ranks 2nd of 7 by office floor area. Built in 2007, it is the newest of them. Its estimated property tax, about $18.88 a square foot of floor area before abatements, is above the neighbors' median of $16.06.
| Building | Office space | Floors | Built | Tax / SF | Last sale |
|---|---|---|---|---|---|
| IAC Building, 555 West 18th Street | 195K SF | 10 | 2007 | $18.88 | Apr 2023, $80M (2 lots) |
| 516 West 20th Street | 69K SF | 7 | 1914 | $21.95 | n/a |
| 529 West 20th Street | 111K SF | 11 | 1930 | $12.17 | n/a |
| 513 West 20th Street | 74K SF | 7 | 1910 | $9.84 | n/a |
| 541 West 21st Street | 48K SF | 8 | 1915 | $20.41 | Dec 2025, $46.2M |
| 510 West 22nd Street | 88K SF | 11 | 1920 | $10.34 | n/a |
| 85 Tenth Avenue | 460K SF | 11 | 1914 | $19.95 | May 2007, $430M |
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
- Building name
- IAC Building
- Other addresses
- 80-94 Eleventh Avenue; 527-555 West 18th Street; 532-542 West 19th Street
- ZIP code
- 10011
- Building type
- Office building (city class O3)
- Total floor area
- 195,000 SF
- Commercial floor area
- 195,000 SF
- Office
- 195,000 SF
- Height
- 10 floors
- Average floor
- About 19,500 SF (floor area divided by floors)
- Year built
- 2007
- Lot area
- 28,850 SF
- Zoning district
- C6-3
- Built FAR
- 6.76
- Max commercial FAR
- 6
- Tax lot (BBL)
- 1006900012
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-16; addresses from the Property Address Directory (PAD) 26b; building name checked against Wikipedia, IAC Building; 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 HTRF VENTURES, LLC as the owner of record. For tax year 2026/27 the city values the IAC Building at $78.7 million and assesses it at $35.4 million. After phase-ins and exemptions its taxable value is $33.9 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 $3.68 million a year before abatements, roughly $18.88 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
- HTRF VENTURES, LLC
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $78,663,000
- Land market value
- $6,000,000
- Assessed value
- $35,398,350
- Taxable value (phased in)
- $33,946,560
- Estimated yearly tax
- About $3.68 million
- Tax per SF of floor area
- About $18.88
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 555 West 18th Street? 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
The IAC Building last sold in April 2023 in a $80 million sale that covered 2 tax lots, this one among them, according to the deed recorded with the city. The buyer of record was HTRF VENTURES, LLC.
- Last sale (deed date)
- April 4, 2023
- Combined price
- $80,000,000 for 2 tax lots
- Buyer
- HTRF VENTURES, LLC
- Deed recorded
- April 17, 2023
- ACRIS document
- 2023040700456012
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; a price for several tax lots is the combined price, not this building's alone.
SEC filings (EDGAR)
Companies with offices here
2 public companies give 555 West 18th Street as their office address in SEC filings.
Public companies
Source: U.S. Securities and Exchange Commission, EDGAR, Financial Statement Data Sets (2025 Q4 to 2026 Q3) and Form 13F Data Sets (through August 2026), pulled 2026-10-24; names as filed. The address is the one each company reports to the SEC. This is not a tenant roster: private companies and most smaller firms do not file with the SEC, a company can report a building it owns, and an address can trail a move by a quarter. Care-of addresses, blank check companies and asset-backed issuers are left out.
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NYC energy benchmarking (Local Law 84)
Energy score, grade and emissions
The IAC Building reported an ENERGY STAR score of 84 out of 100 for 2024 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 93.1 kBtu per square foot, 39% below the national median of 152.3 for a similar property. Its greenhouse gas emissions were about 1,416 metric tons of CO2e (7.73 kg per square foot).
- ENERGY STAR score (2024)
- 84 of 100
- Grade this score earns (Local Law 33)
- B (70 to 84)
- Property type (Portfolio Manager)
- Office
- Site energy use intensity
- 93.1 kBtu/SF
- National median for the type
- 152.3 kBtu/SF
- Greenhouse gas emissions
- 1,416 t CO2e
- Emissions per SF
- 7.73 kg CO2e
- Floor area in the filing
- 183,258 SF
- ENERGY STAR certified
- 2023, 2024, 2025
ENERGY STAR score by year
Energy sources in 2024
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 2026-10-16; 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 2 jobs at the IAC Building. In the last two years, interior work was permitted on 2 floors (floors 1 and 10). The newest build-out, on floor 1, was first permitted in April 2026 (construction; filed cost estimate $5,000).
- New jobs, last 12 months
- 2
- Initial permits, last 12 months
- 2
- Newest job first permitted
- July 2026
- Interior build-outs, last 24 months
- 2
- Floors with interior work, last 24 months
- 1 and 10
- Facade and sidewalk jobs, last 24 months
- 1
Recent build-outs
New jobs by year
Build-outs across ChelseaWhere 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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Before you sign
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Questions about IAC Building
How big is the IAC Building?
The IAC Building has about 195,000 square feet of floor area in total, including 195,000 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 the IAC Building built?
City records list 2007 as the year built. The building is 10 floors tall.
What is the address of the IAC Building?
The IAC Building is at 555 West 18th Street in Chelsea, Manhattan. City records list 80-94 Eleventh Avenue, 527-555 West 18th Street and 532-542 West 19th Street on the same tax lot (BBL 1006900012). A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 555 West 18th Street?
555 West 18th Street is in ZIP code 10011, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The IAC Building is at 555 West 18th Street, New York, NY 10011, in Chelsea.
What is the zoning at the IAC Building?
The lot is in the C6-3 zoning district. PLUTO lists a built floor area ratio (FAR) of 6.76 and a maximum commercial FAR of 6 for this lot.
What subway station is closest to the IAC Building?
The closest subway station to the IAC Building is 14 St (the A, C, E and L trains, connected to 8 Av), about 0.5 miles away in a straight line, roughly 9 minutes on foot. The MTA lists it as an accessible station. Also nearby: 23 St (the C and E trains), 10 min walk; 18 St (the 1 train), 12 min walk. Walking times are straight-line estimates; the street route is longer.
Who owns the IAC Building?
The NYC Department of Finance's 2026/27 assessment roll lists HTRF VENTURES, LLC as the owner of record of the IAC Building (BBL 1006900012). 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.
Who are the tenants at the IAC Building?
Leasemark does not have the building's tenant roster, but SEC filings name companies with offices at the IAC Building. 2 public companies report the address as their principal executive office: ANGI INC. (ANGI) and PEOPLE INC (PPLI). 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.
When was the IAC Building last sold?
The IAC Building last sold in April 2023 in a $80 million sale that covered 2 tax lots, this one among them, according to the deed recorded with the city. The buyer of record was HTRF VENTURES, LLC. The deed is ACRIS document 2023040700456012 (BBL 1006900012) 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 the IAC Building?
The IAC Building reported an ENERGY STAR score of 84 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 84 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 93.1 kBtu per square foot, 39% below the national median of 152.3 for a similar property. Its greenhouse gas emissions were about 1,416 metric tons of CO2e (7.73 kg per square foot).
Is there construction at the IAC Building?
In the 12 months to October 2026, the Department of Buildings issued first permits for 2 jobs at the IAC Building. In the last two years, interior work was permitted on 2 floors (floors 1 and 10). The newest build-out, on floor 1, was first permitted in April 2026 (construction; filed cost estimate $5,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1006900012. 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 the IAC Building?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $33.9 million for the IAC Building. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $3.68 million a year, roughly $18.88 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1006900012 show the actual bill.
What is the assessed value of the IAC Building?
For tax year 2026/27, the NYC Department of Finance puts the market value of the IAC Building at $78.7 million ($6 million of it land) and its assessed value at $35.4 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 10% from 2022/23 ($71.6 million) to 2026/27.
Is there office space for lease at the IAC Building?
No space at 555 West 18th Street is listed on Leasemark right now. 1 tenant is looking for office space in Chelsea. 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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Chelsea
Transit hubs in Chelsea
- A C E at 14 St
- 1 at 18 St
- L at 8 Av