NYC Home Renovation Permits Explained

Navigate the complex world of NYC building permits with confidence. From ALT work to electrical permits, we'll guide you through every requirement.

Types of NYC Building Permits

Alteration Work (ALT)

For renovations that don't change the building's use or occupancy.

  • • Kitchen and bathroom remodels
  • • Interior renovations and updates
  • • Non-structural modifications

New Building Work (NB)

For new construction or major structural changes.

  • • Additions and extensions
  • • Structural modifications
  • • Change of use or occupancy

Electrical Work

For electrical system modifications and upgrades.

  • • Panel upgrades and replacements
  • • New circuits and outlets
  • • Lighting and fixture installations

DOB NOW vs BIS: Which System to Use

DOB NOW (New Online System)

  • • Faster processing times
  • • Real-time status updates
  • • Required for most new applications

BIS (Building Information System)

  • • Legacy system for older permits
  • • Some specialized applications
  • • Historical permit searches

Typical Timelines & Filing Fees

Permit TypeTypical TimelineFiling Fee
Alteration Work (ALT)2-4 weeks$200-500
New Building Work (NB)4-8 weeks$500-1,200
Electrical Work1-2 weeks$100-300

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