Do I Need a Permit to Renovate a Bathroom in New York City?

Do I Need a Permit to Renovate a Bathroom in New York City?

If you’re planning a bathroom renovation in New York City, one of the first questions that comes up is: Do I need a permit? The answer is often yes — but not always. It depends on what you’re changing, not just what you’re replacing.

At The Practical Diva, we help clients navigate both the construction and the paperwork, because in NYC, the approval process can matter just as much as the workmanship.

Here’s how to know where your project falls.

When a Permit Is Usually Required

In general, permits are required when your renovation involves plumbing, electrical, or structural changes. Common bathroom upgrades that typically trigger permits include:

• Moving or adding plumbing fixtures (toilet, shower, tub, sink)

• Replacing or relocating drain or supply lines

• Installing new electrical circuits, outlets, or lighting locations

• Removing or altering walls, even non-load-bearing ones

• Converting a tub to a shower with new plumbing

These projects are typically filed through the NYC Department of Buildings (DOB) and must be performed by appropriately licensed trades.

When a Permit Is Often Not Required

Some cosmetic or “in-kind” work can usually be done without a DOB permit, such as:

• Replacing tile in the same layout

• Swapping a vanity, toilet, or fixture in the same location

• Painting or surface repairs

• Replacing flooring without changing the subfloor or structure

That said, your building may still require approvals, even if the city doesn’t. Co-ops and condos often have their own renovation agreements and insurance requirements.

The Building Factor (Co-ops, Condos, and Rentals)

In NYC, your building can be just as powerful as the city. Many properties require:

• A signed alteration agreement

• Contractor insurance certificates

• Approved work hours and elevator reservations

• Licensed and registered contractors

These steps can affect your timeline even for small projects.

Why Permits Matter

Skipping a required permit can lead to:

• Stop-work orders

• Fines or violations

• Problems selling or refinancing your apartment

• Issues with insurance claims if there’s water damage

A properly permitted job protects both you and your building.

How We Handle It

At The Practical Diva, we review your scope of work before demolition begins and help determine:

• Whether a DOB permit is required

• What licensed trades need to be involved

• What your building will ask for

Our goal is to keep your project moving without surprises halfway through.

The Bottom Line

If you’re changing how water, power, or walls function in your bathroom, you probably need a permit. If you’re refreshing finishes in place, you may not — but your building may still have rules to follow.

When in doubt, it’s always better to ask before you start. In New York City, a five-minute conversation can save weeks of delays.