Bathroom renovation in Brooklyn, NY means dealing with realities most contractors outside the borough don't plan for: cast iron plumbing stacks in older masonry buildings, co-op board alteration agreements that add weeks to your timeline, and plumbing moisture and humidity that demand proper waterproofing behind every tile installation. Melani General Contractor handles every phase of the job, from permit filing with the NYC Department of Buildings to final inspection, under one roof. One point of contact. No handoffs.
Ready to start your bathroom renovation? Talk to our Brooklyn crew today.
A bathroom renovation in Park Slope, Carroll Gardens, or Brooklyn Heights is not a single trade job. Plumbing, electrical, waterproofing, tile, and carpentry all run in sequence, and in pre-war masonry buildings, they are interdependent. Moving a toilet or shower drain even two feet can require rerouting supply and drain lines tied to shared plumbing risers that serve the entire stack. Our Plumbing Services team coordinates those reroutes with building management before the demo begins, not after. Our building stock varies across the borough, too: in Flatbush and Sunset Park, we more commonly encounter 1950s to 1970s brick construction with different stack configurations than the brownstones of the western neighborhoods.
The gap between a gut renovation and a cosmetic refresh is not always obvious until you open the walls. A Gut Renovation strips to the studs, replaces the subfloor, installs a Schluter KERDI or equivalent waterproofing membrane, and upgrades all rough plumbing and electrical before any finish work starts. A cosmetic refresh replaces fixtures, tile, and the vanity only. The right choice depends on building age, the condition of the existing cast iron stack, and whether the electrical panel supports GFCI outlets and a dedicated exhaust fan circuit.
A full bathroom renovation covers the demo through the final fixture set. Here is what that includes in practice:
Yes. Boards require alteration agreement sign-off before demo begins, which typically adds two to six weeks to the pre-construction timeline. We prepare the documentation, file the plumbing and electrical permits with the NYC Department of Buildings, and manage board communication so nothing stalls at review. Plan for it from day one.
Every bathroom renovation we take on covers the full scope, from permit filing through final fixture set. Here is exactly what that means in practice.
We file all required NYC Department of Buildings permits for plumbing and electrical work, and prepare alteration agreement documentation for co-op and condo boards where required.
We strip the space to studs, remove tile, fixtures, and subfloor, and coordinate licensed abatement for asbestos-containing mastic and floor tile common in buildings built before 1980.
We reroute supply and drain lines, tie into shared risers in masonry apartment buildings, and pressure-test all connections before closing walls. Our plumbing team covers every stage of this work.
We run new circuits for GFCI outlets, exhaust fans, and vanity lighting, and confirm the panel can support the added load before pulling wire. See our full Electrical Services for more detail.
We install a continuous Schluter KERDI membrane or equivalent over cement board backer in all wet areas, eliminating moisture intrusion behind tile in the older masonry bathrooms we renovate across Brooklyn.
Bathroom tile installation, shower surrounds, niche configurations, vanity set, all fixtures, trim, and finish carpentry are completed before handoff, with no open punch lists.
Want a clear scope estimate for your Brooklyn bathroom? Ask about our co-op board documentation support.
Explore related work from Melani General Contractor that often ties into a bathroom project:
A bathroom remodel in Brooklyn, NY moves through four defined stages, and each one has a hard dependency on the one before it. No tile goes down before rough-in inspections pass. No demo starts before permits are in hand. Here is exactly what happens between your first call and project close-out.
We inspect the existing bathroom, evaluate the cast iron plumbing stack, check the electrical panel, and test for asbestos-containing tile or mastic. Scope is locked in writing before any contract is signed.
We file all required NYC Department of Buildings permits and prepare alteration agreement documentation for co-op or condo boards. Board review alone can add 2 to 6 weeks. We account for that in your schedule from day one, and our team handles the full permit package for both plumbing and electrical scope as part of this step.
We strip the bathroom, complete all plumbing and electrical work, and install the continuous waterproofing membrane. DOB rough-in inspections must pass before any tile work begins.
We complete tile installation, set all fixtures, finish carpentry, and coordinate final DOB sign-off. Then we walk you through the completed bathroom before closing out the project.
Some bathroom problems are cosmetic. Others signal structural damage that gets worse and more expensive the longer you wait. These six conditions, common in buildings built before 1940 across the borough, tell you a renovation is overdue.
Cracked grout and lifting tile are not just wear and tear. They indicate the waterproofing layer behind the tile has failed, allowing moisture to reach the subfloor and framing with every shower.
Soft or spongy flooring near the toilet or tub base means the subfloor has rotted from long-term water penetration. New tile cannot go down until the damaged subfloor is demoed and replaced entirely.
Many older Brooklyn bathrooms were built without mechanical ventilation. Without adequate airflow, moisture accumulates inside wall cavities and under flooring. Our electrical team includes proper fan sizing and installation to current code.
Mold that returns within weeks of cleaning points to a moisture source inside the wall, often a failed pan liner or deteriorated caulk joint. Cleaning the surface does not fix the problem. The wall needs to be opened.
Original cast iron tubs and galvanized supply lines in 1920s-era buildings, along with low-flow toilets predating current WaterSense standards, are candidates for full replacement that improve both function and resale value.
A board inspection flag for plumbing, waterproofing, or electrical deficiencies requires prompt action. Delays can result in fines and put your alteration agreement standing at risk. Address the flagged items before they escalate into a board dispute.
Pre-war brownstone rowhouses and masonry apartment buildings in the western neighborhoods were built between the 1880s and 1940s. The plumbing and wiring inside them have been aging ever since. Open a wall in one of these buildings and you will commonly find corroded cast iron drain lines, mineral-clogged galvanized supply pipes, and cloth-insulated wiring that no longer meets code. A Brownstone Renovation almost always turns into a systems replacement project once the tile comes off. That is not a surprise to us. It is the baseline expectation.
Brooklyn's climate adds another layer of stress. Temperatures swing from roughly 28°F in winter to 84°F in summer, and those freeze-thaw cycles crack grout joints and open gaps in masonry on exterior bathroom walls. High summer humidity then accelerates mold growth in any bathroom without proper ventilation. Exterior rowhouse walls absorb moisture from outside while the bathroom generates humidity from inside, turning the wall cavity into a mold incubator when waterproofing fails. A continuous waterproofing membrane, the same membrane system we specify on every gut project, is not an upgrade on a Brooklyn bathroom renovation. It is a structural requirement.
Regulatory constraints add time and complexity that newer buildings simply do not carry. The NYC Department of Buildings requires permits for any plumbing or electrical work. Co-op buildings layer on the alteration agreement process, which specifies licensed trades, insurance minimums, and permitted scope. Buildings in the Brooklyn Heights and Cobble Hill historic districts may also require Landmarks Preservation Commission review for exterior-adjacent elements. Knowing these requirements before the demo starts is the difference between a project that closes on schedule and one that stalls at the board. Our team handles Local Law Compliance from the permit filing forward.
The gap between a bathroom that looks fine and one that is structurally sound is not always obvious, and in an older Brooklyn building, it almost never is.
Melani General Contractor operates out of 343 4th Ave in Brooklyn and works as a licensed Home Improvement Contractor across the borough. Mike and Gus lead the crew on site, and the same team that files your permits carries the job through to final inspection. Our Google reviews from Brooklyn property owners reflect consistent client satisfaction, and we carry general liability insurance and provide certificates of insurance directly to co-op and condo boards as part of the alteration agreement package.
Melani General Contractor is based at 343 4th Ave in the heart of the borough's residential market. We work in Sunset Park, Greenpoint, Flatbush, Williamsburg, and across the neighborhoods that define this city's housing stock. Our team knows the building types, the boards, and the constraints that come with renovating in dense residential buildings.
Plumbing, electrical, waterproofing, tile, and finish carpentry are all managed under one roof. One team handles the demo through final inspection. You are not coordinating four separate contractors or chasing down four separate schedules. That single point of accountability matters most in buildings with elevator access windows and neighbor courtesy hour restrictions, where a delayed trade means a lost work day.
Mike and Gus show up when they say they will. Customers consistently describe the team as professional, efficient, and easy to work with. That is not a marketing language. It is what client reviews consistently say. One customer put it plainly: the team "showed up on time every day and completed the work quickly, efficiently." For co-op and condo owners navigating alteration agreement timelines, that reliability is not optional.
You receive a firm, itemized estimate before any work starts. No surprise invoices at the end. If you want to understand what drives renovation costs before you call, How to Budget for a Home Renovation in NYC is a good place to start.
Our general contracting and home renovation work is based in Brooklyn, but we serve property owners across all five boroughs. Wherever your project is, we bring the same permits, knowledge, licensed trades, and direct oversight.
Our team is based at 343 4th Ave in the heart of the borough, close to the Boerum Hill, Gowanus, and Park Slope neighborhoods we serve every week. We assess your space, file the right NYC Department of Buildings permits, and get your project on the schedule. Call Melani General Contractor at (718) 283-4154 or submit your project details online for a Bathroom Renovation estimate.
Yes. Any bathroom renovation that involves plumbing or electrical work requires a permit from the NYC Department of Buildings. That includes rerouting drain lines, moving or adding outlets, and installing exhaust fan circuits. Skipping permits risks stop-work orders, fines, and serious complications when you sell or refinance. We handle all DOB filings as part of the project. If your building has local law compliance requirements, our team coordinates those too. See our Local Law Compliance Contractor page for more detail on how that process works.
A full bathroom gut renovation in a co-op or condo typically runs 4 to 8 weeks from demo to final inspection, depending on plumbing and electrical scope and permit approval speed. Co-op board alteration agreement review adds 2 to 6 weeks at the front end, before any work begins. Cosmetic renovations that do not touch rough plumbing or electrical often finish in 2 to 3 weeks. Plan for the board review timeline early. It is the single most common source of schedule delays in Park Slope, Sunset Park, and Windsor Terrace co-op buildings.
A gut renovation strips the bathroom to the studs, replaces the subfloor, installs new rough plumbing and electrical, and applies a continuous waterproofing membrane before any finish work begins. A cosmetic remodel replaces tile, fixtures, and the vanity only, leaving the underlying structure in place. In older rowhouse and apartment buildings across Ditmas Park and Kensington, cosmetic remodels frequently reveal conditions that require converting to a full gut once walls are open. It is better to know that before the demo than after. Our Gut Renovation page covers what that scope actually involves.
We prepare a complete contractor documentation package for your board, including our Home Improvement Contractor (HIC) License, insurance certificates, and a detailed scope of work. We coordinate directly with building management on work hour restrictions, elevator access schedules, and any building-specific requirements. If the building falls within a Landmarks Preservation Commission designated historic district, we account for those requirements in the permit and approval process before submission.
Asbestos-containing materials, including floor tile, mastic adhesive, and pipe insulation, are common in buildings constructed before 1980 across Borough Park, Midwood, and Greenpoint. Lead paint is prevalent in older rowhouse stock throughout the borough. When testing confirms the presence of either, we coordinate licensed abatement contractors to complete removal before demo proceeds, in full compliance with NYC and EPA requirements. Read our guide on What Property Owners Need to Know Before Renovating a Historic Home for a fuller picture of what to expect in older buildings.
We provide a firm, itemized written estimate after an initial site assessment. That estimate covers all labor, materials, permit fees, and any known abatement costs. The price agreed before work begins is the price paid. Adjustments happen only for genuinely unforeseen conditions, documented through a change order before any additional work proceeds. For a broader look at how renovation budgets come together, see our guide on How to Budget for a Home Renovation.
Our team is based at 343 4th Ave in Brooklyn and ready to assess your bathroom, file your permits, and get your renovation on the schedule. Call (718) 283-4154 or submit your project details online.
