Renovating in a NYC co-op or condo in 2025 means more than design decisions—it’s about navigating building rules. Expect alteration agreements, DOB permits, and fees that can add $5,000–$25,000 before construction even begins. Knowing the process upfront prevents costly delays.

If you’re planning to remodel a condo or co-op apartment in New York City, understanding the renovation rules is just as important as picking materials. Many owners are surprised by alteration agreements, permit timelines, and hidden fees. In this guide, we’ll break down what you need to know for a smooth NYC remodel in 2025.

Section 1: What Permits Do You Need for a NYC Co-op or Condo Renovation?

Most co-op and condo renovations require Department of Buildings (DOB) permits especially when plumbing, electrical, or walls are involved.

• DOB permits: Required for kitchens, bathrooms, structural, and electrical work.

• Board approvals: The building’s board reviews your plans before you can start.

• Minor work: Cosmetic updates like painting, flooring, or light fixture swaps often need no DOB permit but may still require board approval.

Section 2: What Are Typical Renovation Fees in NYC Co-ops & Condos?

Expect fees before work begins.

• Alteration agreement fees: $1,000–$5,000 average.

• Security deposits/escrows: $5,000–$20,000 to cover potential damages.

• Architect review fees: $500–$3,000 depending on scope.

• Permits: DOB filing fees vary but typically add several thousand.

Step-by-Step Guide: How to Get Renovation Approval in NYC

1. Hire a licensed contractor familiar with NYC co-op/condo work.

2. Submit design drawings & scope of work.

3. Obtain DOB permits if required.

4. Get board approval & sign the alteration agreement.

5. Pay deposits/fees.

6. Schedule work with building management to avoid conflicts.

FAQ Section

Do I need a permit for a bathroom remodel in a NYC co-op? Yes, plumbing and waterproofing changes require DOB permits and board approval.

How long does board approval take? Typically 4–8 weeks depending on the building’s review schedule.

What’s the biggest hidden cost? Security deposits/escrows—sometimes $15,000 or more.

Can I DIY work in my condo? No, most boards require licensed and insured contractors.

Author Bio & Expertise

Written by Richard Golding, a nationally recognized builder with 20+ years of construction expertise. Metro Contractors specializes in high-end NYC renovations, from co-ops to luxury condos.

Planning a condo or co-op remodel in NYC? Request a free estimate today and let Metro Contractors guide you through the rules.