NYC Building Permit Guidelines

When is a Building Permit Not Required?

Permits are not needed for minor updates like:

• Painting or plastering.
• Installing cabinets.
• Replacing plumbing fixtures.
• Resurfacing floors.
• Non-structural roof repairs.
• Emergency repairs (e.g., addressing gas leaks or stabilizing unsafe structures).

Note: Licensed contractors with a Department of Consumer Affairs Home Improvement Contractor (HIC) license must perform these tasks.

How Long Does it Take to Get a Permit?

The timeline to secure a permit varies:

• Alt1 (standard filing): 3–4 months.
• Alt1 (self-certification): 3–4 weeks.
• Alt2 (standard filing): 4–6 weeks.
• Landmark approval: 4–6 weeks (standard), 4–7 business days (expedited).

Cost of NYC Building Permits

Permit fees range from several hundred to thousands of dollars and are based on:

• Permit type (e.g., NB, Alt).
• Project size (measured in square footage).
• Additional specialty permits are required.

Types of Building Permits

1. New Building (NB): For constructing new structures.
2. Alteration-CO (Alt-CO): For major alterations affecting use, occupancy, or egress, often requiring a new Certificate of Occupancy.
3. Alteration (Alt): For smaller-scale work that doesn’t change use, occupancy, or egress.

Alteration Permits Subcategories:

• Alt1: Major renovations (e.g., changing building use or adding floors).
• Alt2: Minor renovations without affecting use or occupancy.
• Alt3: Minor alterations (e.g., scaffolding or temporary fencing).

Specialty Permits
Specific projects may require additional permits, such as:

• After-hours work.
• Asbestos abatement.
• Electrical or plumbing work.
• Elevator installation.
• Sign installation.

How to Apply for a Permit

1. Applications must be submitted by a licensed Professional Engineer (PE) or Registered Architect (RA) via the DOB NOW platform.
2. Create an e-filing account and provide all required documentation.
3. Pay the necessary fees.
4. Once approved, post the permit at the worksite.