Office building · Midtown, Manhattan
437 Madison Avenue
New York, NY
437 Madison Avenue is a 39-floor office building in Midtown, Manhattan, built in 1967, with about 789,000 square feet of office space according to city records.
Also at 31-43 East 49th Street, 32-42 East 50th Street and 433-443 Madison Avenue.
- Office space
- 789K SF
- Floors
- 39
- Year built
- 1967
- Zoning
- C5-3
The 41st largest of the 351 office buildings we track in Midtown. Compare it with 6 neighbors
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Compared with its neighbors
How 437 Madison Avenue compares
Next to the 6 nearest large office buildings, all within a 1 minute walk, 437 Madison Avenue ranks 2nd of 7 by office floor area. It went up in 1967; the median neighbor dates from 1929. Its estimated property tax, about $18.60 a square foot of floor area before abatements, is close to the neighbors' median of $18.28.
| Building | Office space | Floors | Built | Tax / SF | Last sale |
|---|---|---|---|---|---|
| 437 Madison Avenue | 789K SF | 39 | 1967 | $18.60 | n/a |
| 425 Madison Avenue | 98K SF | 19 | 1927 | $8.58 | n/a |
| 444 Madison Avenue | 387K SF | 42 | 1931 | $20.66 | n/a |
| 300 Park Avenue | 613K SF | 25 | 1954 | $29.12 | n/a |
| 33 East 48th Street | 792K SF | 40 | 1968 | $28.03 | Nov 2007, $1.3B (2 lots) |
| Hampton Shops Building, 18 East 50th Street | 41K SF | 11 | 1916 | $15.90 | n/a |
| 424 Madison Avenue | 60K SF | 15 | 1926 | $14.56 | Nov 2006, $31M |
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
- 31-43 East 49th Street; 32-42 East 50th Street; 433-443 Madison Avenue
- ZIP code
- 10017 (PLUTO); 10022 (Finance roll)
- Building type
- Office building (city class O4)
- Total floor area
- 836,660 SF
- Commercial floor area
- 836,660 SF
- Office
- 788,630 SF
- Retail
- 10,050 SF
- Height
- 39 floors
- Average floor
- About 21,500 SF (floor area divided by floors)
- Year built
- 1967
- Lot area
- 38,360 SF
- Zoning district
- C5-3
- Built FAR
- 21.81
- Max commercial FAR
- 15
- Tax lot (BBL)
- 1012850021
Nearest subway
- 51 St
- 5 Av/53 St
- 47-50 Sts-Rockefeller Ctr
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 storefront registry (Local Law 157)
Storefronts and vacancy
Owners registered 8 storefronts at 437 Madison Avenue for December 31, 2025, the newest annual filing the city has published, and 2 of them stood vacant that day. At least one storefront here has been reported vacant at the end of every year since 2019.
- Storefronts registered for December 31, 2025
- 8
- Vacant that day
- 2
- Share vacant here
- 25.0%
- Share vacant across Midtown
- 14.3%
- Share vacant along Madison Avenue
- 10.4%
- Share vacant citywide
- 9.2%
Vacant on December 31, by year
Own or lease out a storefront at 437 Madison Avenue? Listing it is free, and it is matched against every active requirement for retail space in Midtown the day it goes up.
Source: NYC Department of Finance, Storefronts Reported Vacant or Not (Local Law 157), annual filings for 2019 to 2025, pulled 2026-10-16. 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, as the owners filed them. The 2025 filing was due June 1, 2026, 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
Property tax and assessed value
For tax year 2026/27 the city values 437 Madison Avenue at $330 million and assesses it at $148.5 million. After phase-ins and exemptions its taxable value is $143.4 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 $15.6 million a year before abatements, roughly $18.60 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.
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $329,964,000
- Land market value
- $76,900,000
- Assessed value
- $148,483,800
- Taxable value (phased in)
- $143,426,860
- Estimated yearly tax
- About $15.6 million
- Tax per SF of floor area
- About $18.60
City market value by tax year
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Source: NYC Department of Finance, Property Valuation and Assessment Data (2026/27 roll), 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.
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SEC filings (EDGAR)
Companies with offices here
One public company and 6 investment managers and funds give 437 Madison Avenue as their office address in SEC filings.
Public company
Investment managers and funds
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
437 Madison Avenue reported an ENERGY STAR score of 58 out of 100 for 2024 in its Local Law 84 benchmarking filing. Under Local Law 33 that score earns a C (55 to 69). Its site energy use came to 91.1 kBtu per square foot, 10% below the national median of 101.3 for a similar property. Its greenhouse gas emissions were about 6,745 metric tons of CO2e (7.87 kg per square foot).
- ENERGY STAR score (2024)
- 58 of 100
- Grade this score earns (Local Law 33)
- C (55 to 69)
- Property type (Portfolio Manager)
- Office
- Site energy use intensity
- 91.1 kBtu/SF
- National median for the type
- 101.3 kBtu/SF
- Greenhouse gas emissions
- 6,745 t CO2e
- Emissions per SF
- 7.87 kg CO2e
- Floor area in the filing
- 857,435 SF
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 18 jobs at 437 Madison Avenue. In the last two years, interior work was permitted on 17 floors (floors 1 to 4, 7 to 12, 14, 22, 25, 34, 36, 38 and 39, the cellar and the mezzanine). The newest build-out, on floor 34, was first permitted in May 2026 (construction, mechanical, plumbing, sprinklers; filed cost estimate $50,000).
- New jobs, last 12 months
- 18
- Initial permits, last 12 months
- 46
- Newest job first permitted
- July 2026
- Interior build-outs, last 24 months
- 16
- Floors with interior work, last 24 months
- 1 to 4, 7 to 12, 14, 22, 25, 34, 36, 38 and 39, cellar, mezzanine
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.
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Next door, in the Upper East Side
783 Madison 4th Floor
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Questions about 437 Madison Avenue
How big is 437 Madison Avenue?
437 Madison Avenue has about 837,000 square feet of floor area in total, including 789,000 square feet of office and 10,000 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 437 Madison Avenue built?
City records list 1967 as the year built. The building is 39 floors tall.
What other addresses does 437 Madison Avenue have?
City records list 31-43 East 49th Street, 32-42 East 50th Street and 433-443 Madison Avenue on the same tax lot (BBL 1012850021) as 437 Madison Avenue. A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 437 Madison Avenue?
City records give two ZIP codes for this tax lot: 10017 in NYC PLUTO 26v2 and 10022 on the Department of Finance's assessment roll. Some large New York buildings have a ZIP code of their own beside the area's, so check with the building's management which one it uses before you rely on either.
What is the zoning at 437 Madison Avenue?
The lot is in the C5-3 zoning district. PLUTO lists a built floor area ratio (FAR) of 21.81 and a maximum commercial FAR of 15 for this lot.
What subway station is closest to 437 Madison Avenue?
The closest subway station to 437 Madison Avenue is 51 St (the 6, E and F trains, connected to Lexington Av/53 St), about 950 feet away in a straight line, roughly 4 minutes on foot. The MTA lists it as an accessible station. Also nearby: 5 Av/53 St (the E and F trains), 4 min walk; 47-50 Sts-Rockefeller Ctr (the B, D, F and M trains), 6 min walk. Walking times are straight-line estimates; the street route is longer.
Who are the tenants at 437 Madison Avenue?
Leasemark does not have the building's tenant roster, but SEC filings name companies with offices at 437 Madison Avenue. One public company reports the address as its principal executive office: SAIHEAT LTD (SAIH). 6 investment managers and funds file 13F holdings reports from the address, including COINSHARES ASSET MANAGEMENT (US) LLC; Integral Health Asset Management, LLC; and Lodge Hill Capital, LLC. 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.
What is the energy grade of 437 Madison Avenue?
437 Madison Avenue reported an ENERGY STAR score of 58 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 58 earns a C. 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 91.1 kBtu per square foot, 10% below the national median of 101.3 for a similar property. Its greenhouse gas emissions were about 6,745 metric tons of CO2e (7.87 kg per square foot).
Is there construction at 437 Madison Avenue?
In the 12 months to October 2026, the Department of Buildings issued first permits for 18 jobs at 437 Madison Avenue. In the last two years, interior work was permitted on 17 floors (floors 1 to 4, 7 to 12, 14, 22, 25, 34, 36, 38 and 39, the cellar and the mezzanine). The newest build-out, on floor 34, was first permitted in May 2026 (construction, mechanical, plumbing, sprinklers; filed cost estimate $50,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1012850021. 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 437 Madison Avenue?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $143.4 million for 437 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 $15.6 million a year, roughly $18.60 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1012850021 show the actual bill.
What is the assessed value of 437 Madison Avenue?
For tax year 2026/27, the NYC Department of Finance puts the market value of 437 Madison Avenue at $330 million ($76.9 million of it land) and its assessed value at $148.5 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 9% from 2022/23 ($302.3 million) to 2026/27.
Are there vacant storefronts at 437 Madison Avenue?
Owners registered 8 storefronts at 437 Madison Avenue for December 31, 2025, the newest annual filing the city has published, and 2 of them stood vacant that day. At least one storefront here has been reported vacant at the end of every year since 2019. These are the owners' filings with the Department of Finance under Local Law 157, so a storefront vacant on December 31, 2025 may have been leased since. Owners and brokers can list a storefront on Leasemark for free.
Is there office space for lease at 437 Madison Avenue?
No space at 437 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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