550 Madison Avenue, Manhattan
Commercial · built 1984 · Block 1291, Lot 10.
Building permits
- Alteration, filed Jun 22, 2026, estimated cost $46K, described as “Sprinkler modifications as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Jun 22, 2026, estimated cost $272K, described as “Mechanical modifications as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Jun 1, 2026, estimated cost $36K, described as “The proposed tenant improvement work consists of interior alterations within an existing office tenant space on the 18TH floor to include the recon. Of an existing office area to create two private offices. Partition and lighting…”
- Alteration, filed May 21, 2026, estimated cost $3K, described as “Erect sign-3 wording "sushi yoshitake" @madison ave elevation as per drawing file herewith”
- Alteration, filed May 21, 2026, estimated cost $4K, described as “Erect non- illuminated wall SIGN#1 wording "cote korean steakhouse" @madison ave elevation as per drawing file herewith.”
- Alteration, filed May 21, 2026, estimated cost $3K, described as “Erect non-illuminated sign-2 wording "bar chimera" @madison ave elevation as per drawing file herewith.”
- Alteration, filed May 21, 2026, estimated cost $5K, described as “Erect non-illuminsted susspended sign-4 wording " bar chimera" @ east 56TH st elevation as per dreawing file herewith.”
- Alteration, filed May 20, 2026, described as “Installation of temporary sidewalk shed as per plan. There is no change in use, egress, or occupancy.”
- Alteration, filed Apr 28, 2026, estimated cost $664K, described as “Mechanical modifications as per plans filed herewith. No change to use, egress or occupancy .”
- Alteration, filed Apr 28, 2026, estimated cost $91K, described as “Sprinkler/Plumbing modifications as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Apr 21, 2026, estimated cost $848K, described as “Interior renovations as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Apr 15, 2026, described as “Installation of suspended scaffold for facade work or inspection”
- Alteration, filed Mar 2, 2026, described as “IRA Rope Access Facade Inspection”
- Alteration, filed Feb 3, 2026, estimated cost $2.8M, described as “Interior renovations as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Jan 23, 2026, estimated cost $1.3M, described as “Mechanical modifications as per plans filed herewith. No change to use, egress or occupancy .”
- Alteration, filed Jan 23, 2026, estimated cost $276K, described as “Sprinkler/Plumbing modifications as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Jan 15, 2026, estimated cost $205K, described as “Filing for facade as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jan 8, 2026, estimated cost $324K, described as “Modifications and upgrades to the existing HVAC systems humidifier and VAV as shown on plans filed herewith, no change in occupancy use or egress.”
- Alteration, filed Dec 23, 2025, estimated cost $39K, described as “Mechanical modifications as per plans filed herewith. No change to use, egress or occupancy .”
- Alteration, filed Dec 19, 2025, estimated cost $623K, described as “Mechanical modifications as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Nov 19, 2025, estimated cost $158K, described as “Interior renovations as per plans filed herewith. No change to use, egress or occupancy.”
- No Work, filed Nov 18, 2025
- Alteration, filed Nov 12, 2025, estimated cost $325K, described as “Interior renovation as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Nov 10, 2025, estimated cost $300K, described as “Mechanical modifications as per plans filed herewith. No change to use, occupancy or egress.”
- Alteration, filed Nov 10, 2025, estimated cost $50K, described as “Sprinkler modifications as per plans filed herewith. No change to use, egress or occupancy.”
85 more, older permits are in this building’s full list on the map.
Property taxes
- Assessment
- $252,490,950
- 2026–27 tax
- $27,240,226
- Market value (city estimate)
- $561,091,000
- Taxable value
- $251,108,280
- Assessed land
- $28,485,000
- Assessed improvements
- $224,005,950
Zoning
C5-3 (part of the lot is C5-2.5): floor area ratio 18.62 built, above the 15.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- May 26, 2016: $1,400,000,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of 550 Madison Avenue (former AT&T Corporate Headquarters Building, later Sony Building) (Individual Landmark). 50 Landmarks Preservation Commission permits are on file.
Board and land use applications
- 550 Madison Avenue - CPS Mod (City Planning P2016M0346): Certification, Special permit, Completed, decided May 7, 2020. OAC 550 Owner LLC proposes a modification of previously approved special permits and restrictive declaration recorded in connection with the special permits to reconfigure the CPS and a Chairperson Certification pursuant to Section…
- Greater East Midtown - Special Subdistrict (City Planning P2016M0316): Completed, decided Aug 15, 2017. This is an application by NYC Department of City Planning requesting a text amendment to establish the East Midtown Subdistrict and extend the Special Midtown District, and to rezone a half-block area from C5-2 to C5-3 to reinforce the…
- SONY WONDER TECHNOLOGY LAB (City Planning P2011M0143): Completed, decided Jul 20, 2011. 8TH MOD TO THE SPECIAL PERMIT TO THE 1ST MOD. DEC. TO ALLOW*ADJUSTMENT TO THE SCHEDULE OF OPERATIONS TO CLOSE SUNDAYS*& EXPAND HOURS ON TUES-SAT & MAINTAIN THE SAME NUMBER OF*TOTAL HOURS OF OPERATION PER WEEK (POPS); Additional Other #(s):…
- SONY PLAZA PUBLIC ARCADE (City Planning P2007M0395): Completed, decided Sep 13, 2007. 6TH MOD TO THE RESTRICTIVE DECL TO ALLOW FOR CLOSING &*RENOVATION OF THE PUBLIC ARCADE SEVERAL DAYS EVERY YEAR*(POPS)
- SONY PUBLIC ARCADE (City Planning P2004M0366): Completed, decided Oct 14, 2004. 6TH MOD TO THE RESTRICTIVE DECL TO MODIFY THE REQUIRED HOURS*OF OPERATION FOR THE SONY WONDER TECHNOLOGY LAB (POPS)
- SHALLOTS RESTAURANT/SONY BLDG (City Planning P2002M0047): Completed, decided Oct 2, 2001. 5TH MOD OF SPECIAL PERMIT TO ALLOW RESTAURANT SEATINGS IN*COVERED PEDESTRIAN SPACE IN THE SONY BLDG FROM 5PM TO CLOSE*WITHIN THE SPECIAL MIDTOWN DIST (POPS)
- SONY PLAZA PUBLIC ARCADE (City Planning P1998M0136): Completed, decided Apr 20, 1998. 4TH MODIFICATION TO THE SPECIAL PERMIT TO MAKE ADDITIONAL*ALTERATIONS TO THE COVERED PEDESTRIAN SPACE & THE FACADE OF*THE 4-STORY ANNEX BLDG (POPS)
- SONY PLAZA ARCADE & MEDIA WORLD III (City Planning P1993M0412): Completed, decided Sep 14, 1994. 93DCP044M: SPECIAL PERM (ZR81-232) TO ENCLOSE THE ENTRANCES TO THE CPS THROUGHOUT THE YEAR & TO CHANBGE THE PLAZA'S HOURS; Additional Other #(s): 780301/A/B
- SONY WONDER TECHNOLOGY LAB (City Planning P1994M0351): Completed, decided Mar 22, 1994. MODIFICATION TO THE RESTRICTIVE DECL TO GRANT AN EXTENSION*TO ALLOW THE SONY WONDER TECHNOLOGY LAB TO OPEN 5/2/94
- SONY PLAZA & SONY MEDIA WORLD (City Planning P1992M0456): Completed, decided Sep 17, 1992. 92DCP631M: 2ND MODIF TO ALLOW SONY TSO REDESIGN THE GROUND LEVEL PUBLIC SPACE
In the news
550 Madison Avenue’s New Public Plaza Opens in Midtown East, Manhattan, New York YIMBY, Nov 19, 2022.