Office building with commercial space · Midtown, Manhattan
637 Madison Avenue
New York, NY 10022
637 Madison Avenue is a 19-floor office building with commercial space in Midtown, Manhattan, built in 1958, with about 142,000 square feet of office space according to city records.
Also at 35-39 East 59th Street and 633-643 Madison Avenue.
- Office space
- 142K SF
- Floors
- 19
- Year built
- 1958
- Zoning
- C5-3
The 193rd largest of the 351 office buildings we track in Midtown. Compare it with 6 neighbors
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Compared with its neighbors
How 637 Madison Avenue compares
Next to the 6 nearest large office buildings, all within a 1 minute walk, 637 Madison Avenue ranks 4th of 7 by office floor area. It went up in 1958; the median neighbor dates from 1954. Its estimated property tax, about $33.00 a square foot of floor area before abatements, is above the neighbors' median of $21.51.
| Building | Office space | Floors | Built | Tax / SF | Last sale |
|---|---|---|---|---|---|
| 637 Madison Avenue | 142K SF | 19 | 1958 | $33.00 | Jun 2018, $153M |
| 645 Madison Avenue | 131K SF | 22 | 1971 | $31.33 | Apr 2022, $197M |
| 55 East 59th Street | 276K SF | 24 | 1985 | $15.57 | n/a |
| 20 East 60th Street | 45K SF | 8 | 1939 | $1.59 | n/a |
| 28 East 60th Street | 128K SF | 25 | 1917 | $12.33 | n/a |
| 650 Madison Avenue | 369K SF | 27 | 1957 | $47.98 | Sep 2013, $1.3B |
| 653 Madison Avenue | 185K SF | 24 | 1951 | $27.45 | Oct 2024, $159M |
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
- 35-39 East 59th Street; 633-643 Madison Avenue
- ZIP code
- 10022
- Building type
- Office building with commercial space (city class O6)
- Total floor area
- 149,881 SF
- Commercial floor area
- 149,881 SF
- Office
- 141,993 SF
- Retail
- 7,888 SF
- Height
- 19 floors
- Average floor
- About 7,900 SF (floor area divided by floors)
- Year built
- 1958
- Last major alteration
- 1984
- Lot area
- 9,087 SF
- Zoning district
- C5-3
- Built FAR
- 16.49
- Max commercial FAR
- 15
- Tax lot (BBL)
- 1013740021
Nearest subway
- 5 Av/59 St
- 59 St
- Lexington Av/63 St
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 635 MADISON FEE PROPERTY OWNER LLC as the owner of record. For tax year 2026/27 the city values 637 Madison Avenue at $107.1 million and assesses it at $48.2 million. After phase-ins and exemptions its taxable value is $45.6 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 $4.95 million a year before abatements, roughly $33.00 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
- 635 MADISON FEE PROPERTY OWNER LLC
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $107,066,000
- Land market value
- $30,400,000
- Assessed value
- $48,179,700
- Taxable value (phased in)
- $45,591,940
- Estimated yearly tax
- About $4.95 million
- Tax per SF of floor area
- About $33.00
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 637 Madison 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
637 Madison Avenue last sold in June 2018 for $153 million, according to the deed recorded with the city. 635 MADISON FEE OWNER LLC sold it to 635 MADISON FEE PROPERTY OWNER LLC. That comes to about $1,021 per square foot of floor area.
- Last sale (deed date)
- June 29, 2018
- Price
- $153,000,000
- Price per SF of floor area
- About $1,021
- Seller
- 635 MADISON FEE OWNER LLC
- Buyer
- 635 MADISON FEE PROPERTY OWNER LLC
- Deed recorded
- July 9, 2018
- ACRIS document
- 2018070500798001
Recorded sales
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 Department of Buildings permits
Work permits and build-outs
In the 12 months to October 2026, the Department of Buildings issued first permits for 3 jobs at 637 Madison Avenue. In the last two years, interior work was permitted on 2 floors (floors 1 and 2). The newest build-out, on floor 1, was first permitted in May 2026 (mechanical; filed cost estimate $150,000).
- New jobs, last 12 months
- 3
- Initial permits, last 12 months
- 3
- Newest job first permitted
- September 2026
- Interior build-outs, last 24 months
- 3
- Floors with interior work, last 24 months
- 1 and 2
Recent build-outs
New jobs by year
Build-outs across MidtownWhere 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.
No office space listed in Midtown yet
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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 the Upper East Side
783 Madison 4th Floor
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Questions about 637 Madison Avenue
How big is 637 Madison Avenue?
637 Madison Avenue has about 150,000 square feet of floor area in total, including 142,000 square feet of office and 8,000 square feet of retail, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.
When was 637 Madison Avenue built?
City records list 1958 as the year built, with a major alteration recorded in 1984. The building is 19 floors tall.
What other addresses does 637 Madison Avenue have?
City records list 35-39 East 59th Street and 633-643 Madison Avenue on the same tax lot (BBL 1013740021) as 637 Madison Avenue. A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 637 Madison Avenue?
637 Madison Avenue is in ZIP code 10022, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 637 Madison Avenue, New York, NY 10022, in Midtown.
What is the zoning at 637 Madison Avenue?
The lot is in the C5-3 zoning district. PLUTO lists a built floor area ratio (FAR) of 16.49 and a maximum commercial FAR of 15 for this lot.
What subway station is closest to 637 Madison Avenue?
The closest subway station to 637 Madison Avenue is 5 Av/59 St (the N, R and W trains), about 750 feet away in a straight line, roughly 3 minutes on foot. Also nearby: 59 St (the 4, 5, 6, N, R and W trains, connected to Lexington Av/59 St), 4 min walk; Lexington Av/63 St (the M and Q trains), 5 min walk. Walking times are straight-line estimates; the street route is longer.
Who owns 637 Madison Avenue?
The NYC Department of Finance's 2026/27 assessment roll lists 635 MADISON FEE PROPERTY OWNER LLC as the owner of record of 637 Madison Avenue (BBL 1013740021). 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.
When was 637 Madison Avenue last sold?
637 Madison Avenue last sold in June 2018 for $153 million, according to the deed recorded with the city. 635 MADISON FEE OWNER LLC sold it to 635 MADISON FEE PROPERTY OWNER LLC. That comes to about $1,021 per square foot of floor area. The deed is ACRIS document 2018070500798001 (BBL 1013740021) 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.
Is there construction at 637 Madison Avenue?
In the 12 months to October 2026, the Department of Buildings issued first permits for 3 jobs at 637 Madison Avenue. In the last two years, interior work was permitted on 2 floors (floors 1 and 2). The newest build-out, on floor 1, was first permitted in May 2026 (mechanical; filed cost estimate $150,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1013740021. 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 637 Madison Avenue?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $45.6 million for 637 Madison Avenue. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $4.95 million a year, roughly $33.00 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1013740021 show the actual bill.
What is the assessed value of 637 Madison Avenue?
For tax year 2026/27, the NYC Department of Finance puts the market value of 637 Madison Avenue at $107.1 million ($30.4 million of it land) and its assessed value at $48.2 million, the 45% of market value the city assesses for Class 4 property. The city's market value fell 6% from 2022/23 ($113.8 million) to 2026/27.
Is there office space for lease at 637 Madison Avenue?
No space at 637 Madison Avenue is listed on Leasemark right now. Nearby on Leasemark: office space for lease at 783 Madison 4th Floor in the Upper East Side (994 SF, $66.40/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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