1 PENN PLAZA

🏢 Building Snapshot

Address

1 PENN PLAZA, New York, NY, USA

Borough

Manhattan

Neighborhood

Chelsea

BBL

1-00783-0070

Property Type

Property (O4)

Building Class

O4

Year Built

1972

Floors

57

Buildings on Lot

3

Residential Units

—

Total Units

451

Gross Sq Ft

2,689,635

Lot Area (sq ft)

127,966

Zoning

C6-4

Owner of Record

KORPENN LLC

Property Management

—

💰 Financial Snapshot

Fiscal Year

2026/27 Final

Market Value

$971,297,000

Taxable Assessed Value

$404,131,620

Taxable Billable Assessed Value

$404,131,620

Assessed Value Exemptions

—

Tax Class

—

Assessed Value (used)

$404,131,620

📋 Compliance Snapshot

• Local Law 97 — Carbon Emissions

  2,689,635 sq ft — verify compliance at nyc.gov
  Likely Subject
• LL84 / LL133 — Energy Benchmarking

  2,689,635 sq ft — annual filing required
  Required Annually
• LL87 — Energy Audit & Retro Commissioning

  10-year cycle — block ending in 3
  Due Dec 31, 2033
• LL33 — Energy Efficiency Grade

  Some buildings are exempt — check grade at nyc.gov/buildings
  Subject — Verify Grade
• LL11 / FISP — Façade Inspection

  57-story building — Sub-cycle 5 — Verify at nyc.gov/buildings
  Due Dec 31, 2029