Neighborhoods › Midtown South-Flatiron-Union Square

420 Park Avenue South, Manhattan: 37 building jobs on file

Building Identification Number 1088542 · Midtown South-Flatiron-Union Square. Newest first.

Interior renovation: Plumbing modifications related to guestrooms renovation., est. $2.1M

Approved · filed Oct 14, 2026 · est. $2,099,991

Interior renovation: Roof elevator extension, raised concrete floor, slab…, est. $150K

Approved · filed Sep 30, 2026 · est. $149,988

Full demolition of 16-story building, est. $25K

Approved · filed Sep 15, 2026 · est. $25,000

Full demolition of 16-story building, est. $10K

Approved · filed Sep 15, 2026 · est. $10,000

Alteration: Installation of temporary plywood fence as per plan. no change in…, est. $1K

Approved · filed Sep 10, 2026 · est. $1,000

Mechanical/plumbing work: Filing modifications to existing plumbing system…, est. $8K

Permit Entire · filed Sep 1, 2026 · est. $7,500

Facade/scaffold work: 9th cycle fisp repair - no change to use, egress or…, est. $39K

Approved · filed Aug 20, 2026 · est. $39,040

Interior renovation: Filing plumbing modifications related to restaurant…, est. $178K

Approved · filed Jul 27, 2026 · est. $177,795

Interior renovation: Plumbing modifications related to guestrooms renovation., est. $2.1M

Approved · filed Jul 19, 2026 · est. $2,099,991

Alteration: Installation of temporary plywood fence as per plan. no change in use…

Permit Entire · filed Jul 6, 2026 · est. $1

Alteration: Installation of temporary plywood fence as per plan. no change in…, est. $1K

Approved · filed Jun 10, 2026 · est. $1,000

Full demolition of 16-story building, est. $25K

Approved · filed Apr 29, 2026 · est. $25,000

Interior renovation: Structural framing with steel on 18th and 19th floors.…, est. $75K

Permit Entire · filed Apr 28, 2026 · est. $75,000

Interior renovation: Mechanical systems modifications related to public…, est. $300K

Approved · filed Apr 27, 2026 · est. $300,000

Full demolition of 16-story building, est. $25K

Permit Entire · filed Apr 20, 2026 · est. $25,000

Facade/scaffold work: Installation of temporary sidewalk shed as per plan. no…, est. $1K

Permit Entire · filed Apr 15, 2026 · est. $1,000

Alteration: Installation of temporary plywood fence as per plan. no change in…, est. $1K

Permit Entire · filed Apr 15, 2026 · est. $1,000

Interior renovation: Plumbing modifications related to guestrooms renovation., est. $2.1M

Permit Entire · filed Feb 22, 2026 · est. $2,099,991

Interior renovation: Mechanical system modifications related to restaurant…, est. $358K

Permit Entire · filed Feb 22, 2026 · est. $358,020

Mechanical/plumbing work: Modifications to existing sprinkler system related…, est. $80K

Permit Entire · filed Feb 18, 2026 · est. $79,982

Mechanical/plumbing work: Roof elevator extension, est. $50K

Permit Entire · filed Feb 18, 2026 · est. $50,000

Interior renovation: Plumbing modifications related to hotel lobby…, est. $60K

Permit Entire · filed Feb 18, 2026 · est. $59,994

Interior renovation: Sprinkler systems modification related to hotel lobby…, est. $18K

Permit Entire · filed Feb 18, 2026 · est. $18,000

Full demolition of 19-story building, est. $256K

Permit Entire · filed Feb 18, 2026 · est. $255,598

Interior renovation: Filing plumbing modifications related to restaurant…, est. $178K

Permit Entire · filed Feb 18, 2026 · est. $177,795

Sign or curb cut: Structural reinforcements related to restaurant renovation…, est. $30K

Permit Entire · filed Feb 18, 2026 · est. $30,000

Interior renovation: Sprinkler modifications related to restaurant renovation., est. $48K

Permit Entire · filed Feb 18, 2026 · est. $47,795

Interior renovation: Plumbing modifications related to 1st, 2nd, 3rd floor…, est. $150K

Permit Entire · filed Feb 18, 2026 · est. $150,000

Interior renovation: Roof elevator extension, raised concrete floor, slab…, est. $150K

Approved · filed Feb 17, 2026 · est. $149,988

Interior renovation: Structural reinforcements related to the public spaces., est. $45K

Approved · filed Feb 17, 2026 · est. $45,000

Interior renovation: Hotel lobby renovation, est. $130K

Permit Entire · filed Feb 16, 2026 · est. $130,000

Interior renovation: Mechanical systems modifications related to public…, est. $300K

Permit Entire · filed Feb 16, 2026 · est. $300,000

Full demolition of 19-story building, est. $1.4M

Permit Entire · filed Feb 11, 2026 · est. $1,392,250

Facade/scaffold work: Facade renovation is limited to floors 1, 2, and 3…, est. $1.3M

Permit Entire · filed Feb 11, 2026 · est. $1,250,000

Full demolition of 19-story building, est. $750K

Approved · filed Feb 11, 2026 · est. $749,998

Full demolition of 19-story building, est. $1.5M

Permit Entire · filed Feb 11, 2026 · est. $1,499,520

Full demolition of 19-story building, est. $2.5M

Approved · filed Feb 11, 2026 · est. $2,501,730

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