Bathroom work is shaped by concealed water-control assemblies, fixture locations, ventilation, and the rooms or units around it. AZRL NYC serves Manhattan and Brooklyn as a licensed general contractor and offers a free walkthrough and estimate.
Define the scope
A bathroom project can be a focused finish refresh or a full gut that replaces concealed plumbing, wall assemblies, and electrical work. The distinction matters because a new tile surface cannot correct a failed substrate or unresolved water path. Begin by documenting fixture locations, ventilation, visible damage, floor transitions, storage needs, and any history of leaks, then have the design team determine what should be opened and replaced.
In an apartment, access to risers, shutoff coordination, permitted work hours, and neighboring units influence the plan. A townhouse may allow different routing, but its existing structure and systems still need assessment. We serve Manhattan and Brooklyn as a licensed general contractor and provide a free walkthrough and estimate; your architect or expediter confirms design and filing requirements.
Waterproofing and shower construction
Water management is a concealed assembly, not just a finish choice. The shower pan, drain connection, curb or threshold, wall waterproofing, corners, niches, and transitions must be designed as a compatible system. The substrate must be suitable, penetrations treated, and the installation sequence followed before tile covers the work. The specified system and any required testing should be confirmed by the design professional and manufacturer documentation.
A curbless shower can create a level entry, but it requires enough depth for slope, drain placement, waterproofing continuity, and a practical transition to the bathroom floor. Existing slab or joist conditions may limit the available recess. A curbed shower also needs careful water containment at the curb and door. Select the shower configuration after the floor build-up and drain conditions are understood, not from a finish image alone.
Tile, stone, and floor transitions
Tile planning includes substrate preparation, layout, slope, grout joints, movement joints where specified, edge profiles, and alignment with niches and fixtures. Large-format pieces may reduce some grout lines but require a suitably flat surface and careful handling. Small mosaics can work well on sloped shower floors, yet their sheet pattern and drain detail need review. The setting bed and material thickness affect finished dimensions.
Bathroom floors meet door saddles, hall flooring, tubs, and shower entries. Coordinate these transitions with the waterproofing detail so the finished floor does not create an unintended route for water. Natural stone and tile may require specific care or sealing based on the material. The architect or supplier should identify maintenance requirements and approve samples under the room’s lighting before final selection.
Plumbing, risers, and wet-over-dry
Relocating a toilet, shower, or tub can involve branch drains, venting, water lines, and access to vertical risers. In multi-unit buildings, plumbing routes and the apartment below matter. Wet-over-dry restrictions vary by building and may prevent placing a new bathroom over a neighbor’s living or sleeping area. Building rules and the design professional’s review should settle feasibility before the layout is fixed.
Pre-war properties may have older piping, cast-iron drains, uneven floors, or prior repairs concealed behind finishes. These are inspection questions, not assumptions about every building. If demolition reveals a condition that differs from the drawings, pause for the architect or plumbing professional to determine a safe response. Coordinate riser shutoffs and access with building management; timing and notification are building-specific.
Ventilation and indoor comfort
A bathroom needs a ventilation strategy appropriate to its location and the building. Confirm whether an existing exhaust connection is available, where it terminates, what equipment is permitted, and whether duct changes require review. A fan’s size, sound, controls, and route should be settled before ceiling work. In apartment buildings, a new exterior penetration or connection to a shared system should never be assumed to be available.
Lighting and ventilation share ceiling space with framing, plumbing, and access panels. Coordinate fan housing, duct path, fixtures intended for use in shower areas, mirror lighting, and service access in the reflected ceiling plan. A quiet fan is useful only if it is properly connected and discharged according to the approved design. Your architect or mechanical professional will confirm the appropriate equipment and code requirements for the specific room.
Heated floors and electrical planning
Electric floor warming can add comfort, but it changes the floor assembly and electrical scope. Confirm the selected system’s required clearances, sensor placement, thermostat location, and compatible finish materials. The heating layout must avoid areas where the product cannot be installed, and the floor height has to work at the door and shower threshold. Electrical capacity and required circuit protection are questions for the electrical professional.
Lighting, receptacles, switches, and any required safety devices should be coordinated with the vanity, mirror, and shower layout. Fixture locations should account for cabinetry and medicine storage so the final installation does not create conflicts. The electrician works from the approved plans and applicable requirements; the contractor coordinates access and sequencing with other trades.
Fixtures, glass, and storage
Choose plumbing fixtures with the rough-in and water pressure conditions in mind. Valve depth, trim compatibility, hand-shower placement, tub filler location, and service access all matter after the wall is closed. Confirm finish availability and maintenance guidance with the supplier. A wall-hung vanity, recessed cabinet, or built-in niche needs framing and backing coordinated before waterproofing and tile.
Shower glass measurements follow finished tile, so the opening should not be ordered from rough dimensions. Door swing, fixed panel, handle clearance, and access to controls affect how the shower works in a small room. Storage can come from a recessed niche, medicine cabinet, or vanity configuration, each with different framing and waterproofing implications. Confirm these details on elevations before work begins.
Leak prevention and building protection
A leak can affect the apartment below as well as the bathroom being renovated. Protecting the opening below, maintaining a reliable waterproofing assembly, coordinating plumbing tests where specified, and responding promptly to unexpected moisture are central risk-management steps. If there is active leakage or suspected damage, notify building management and the appropriate professionals rather than covering the area with new finishes.
For a co-op or condo, the alteration agreement may set insurance, work-hour, elevator, and protection requirements. The managing agent may coordinate water shutoffs and inspections. Keep the sequence visible: rough plumbing, any required inspection or test, waterproofing, approved verification, tile, fixtures, and glass. The exact checkpoints depend on the plans, product system, and building requirements.
Planning and estimating
Bathroom estimate drivers include the number of fixtures, whether plumbing moves, substrate repair, waterproofing system, tile and stone, glass, cabinetry, ventilation, heated floor, access, and building rules. Existing conditions behind tile or below the floor can change the scope. An estimate should distinguish visible work from allowances or decisions that depend on opening the room and receiving professional direction.
Plan selections early enough to coordinate rough-in dimensions and product lead times without promising a fixed construction duration. Board review, building access, inspections, and material readiness all affect sequencing. Our process begins with a conversation, a walkthrough and estimate, construction after the scope is coordinated, and handover. The co-op and condo renovation page explains common building logistics.
Frequently asked questions
Why does waterproofing need its own planning?
The pan, walls, corners, drain, penetrations, and threshold form a connected water-control assembly. The design team should specify compatible components and any required verification before tile.
Can I have a curbless shower in an apartment?
It depends on floor depth, drain location, slope, and the existing structure. Have the architect review elevations and waterproofing details before selecting the layout.
Can a bathroom move over another apartment?
The building may restrict wet-over-dry conditions. The managing agent and design professional should confirm the proposed fixture locations before drawings are finalized.
When should shower glass be ordered?
After tile is complete and finished dimensions are confirmed. Door swing, fixed-panel position, handle clearance, and control access should be resolved in the design.
Can I add heated floors?
A compatible system may be possible, subject to floor build-up, electrical capacity, sensor and thermostat placement, and transition heights.
What if demolition reveals a leak or damaged pipe?
Pause work in the affected area and notify building management and the architect or plumbing professional. They can assess the condition and direct a documented response.