Bathroom Renovation in Manhattan, NY

Yes, co-op and condo boards in Manhattan almost always require approval before bathroom renovation work begins. You will typically need to submit an alteration agreement package that includes contractor insurance, scope of work, and architectural drawings.

Layout changes are possible in Manhattan, but they depend on your building's plumbing stack location and wet-over-dry restrictions. Trimoco LLC reviews these constraints before any plans are drawn so you know what is achievable in your specific building.

The wet-over-dry rule is a building board policy that prevents placing a bathroom or kitchen above a dry space like a bedroom or living room in the unit below. Most Manhattan co-op and condo buildings enforce this rule, and it directly shapes what layout changes are possible in your apartment.

A DOB permit is required in Manhattan when bathroom work involves plumbing changes, structural modifications, or electrical rerouting beyond simple fixture replacement. Trimoco LLC handles the filing coordination so your project meets New York City requirements.

We apply waterproofing systems that meet the standards many Manhattan co-op and condo boards require as part of their alteration agreement approval. Proper waterproofing protects your neighbor's unit below and prevents moisture damage behind finished walls.

Yes, Trimoco LLC works in pre-war Manhattan buildings where aging plumbing risers, plaster walls, and tight elevator access are common challenges. We plan for those building-specific conditions before work starts to avoid unexpected scope changes.