Bathroom Build – West Windsor Township, NJ
This West Windsor Township bathroom was not a remodel — it was built from scratch as part of a home addition. There was no existing bathroom to update: every element was new, starting with the walls and rough plumbing. The finished space is 60 square feet with a tiled shower, vanity, toilet, exhaust fan, in-shower lighting, and a built-in closet with shelving.
Scope of Work
- Wall framing for new bathroom
- Full plumbing rough-in — supply lines and drain installation
- Electrical installation for lighting, exhaust fan, and outlets
- Tile on the shower floor and walls
- In-shower lighting
- New vanity with faucet
- New toilet
- New exhaust fan
- Built-in closet with shelving
Building a Bathroom from Scratch vs. Remodeling One
A bathroom remodel starts with an existing room — existing walls, existing plumbing rough-in, existing electrical — and updates or reconfigures what is there. A bathroom build starts with none of that. In addition, the space where the bathroom will go is framed and drywalled as part of the addition’s structural work, but there are no supply lines, no drain connections, no electrical circuits serving the space yet. All of that has to be installed a new, from the connection point back to the main systems of the house.
For plumbing, that means running supply lines from the home’s existing supply trunk to the new bathroom location, and running a new drain line from the fixtures back to the home’s main drain stack. For electrical, new circuits are run from the panel to serve the lighting, exhaust fan, and GFCI outlets. All of this work is done before any finish materials go in, and all of it has to be inspected before the walls close.
Tile Work in the Shower
The shower was tiled on both the floor and the walls. Tile in a new-build shower requires the same substrate preparation as tile in a remodel: cement board or an equivalent moisture-resistant backer on the walls, and a properly waterproofed floor substrate that directs water toward the drain. In a ground-up build, the substrate is installed as part of the initial construction rather than applied over demo’d walls — the walls are framed, backed, and waterproofed before any finish tile goes on, allowing for a cleaner installation sequence without the substrate variability that comes from demolishing an old bathroom.
In-Shower Lighting
A dedicated light was installed in the shower area. In-shower lighting is best installed during the construction phase — the fixture and its wiring are placed before the ceiling is finished, so the installation is clean and the fixture is properly rated for a wet location. In a ground-up build there is no retrofit: the lighting plan is incorporated into the rough electrical from the start. Without in-shower lighting, the back wall and floor of the enclosure stay noticeably darker than the rest of the bathroom, particularly in the early morning or evening when ambient light is limited.
The Built-In Closet
A closet with shelving was built into the bathroom as part of the project. In a 60-square-foot bathroom built within a home addition, a built-in closet provides storage that would otherwise require freestanding furniture — medicine cabinets, standalone shelving, or linen storage pulled from another room. Building the closet as part of the initial construction means it is framed and finished consistently with the rest of the bathroom, using the available wall space efficiently within the addition’s footprint.
Bathroom Builds in West Windsor Township
West Windsor Township is a Mercer County municipality in central New Jersey with active residential renovation and addition activity. Adding a bathroom to a home — whether as part of an addition or a basement finish — requires the full scope of work described here: framing, rough plumbing, rough electrical, waterproofing, tile, and fixtures. At $9,900 for 60 square feet of new-build bathroom, this project reflects what a ground-up bathroom build within an addition typically costs in this region when the scope is focused. Belmax Remodeling works throughout West Windsor Township and the Mercer County area. For more on our bathroom work, see our bathroom remodeling service page. Homeowners in West Windsor can also visit our West Windsor Township service area page for more on what we do in the area.
Considering a Similar Project?
Ground-up bathroom builds in the 60-square-foot range — as part of an addition or basement finish — with full rough plumbing, electrical, tile shower, vanity, toilet, and built-in storage typically fall in the $9,000–$13,000 range in central New Jersey. This West Windsor project came in at $9,900, completed August 2024. To discuss what your project would involve, request a free estimate.