From a single bath in a Bay Shore Cape to a spa-style primary suite in a bay-front estate, Milton's Construction handles every phase of the remodel with one in-house team and full Town of Islip permit management.
Bathrooms in Bay Shore's older housing stock come with familiar problems: original cast-iron tubs that weigh as much as a small car, galvanized supply lines that have narrowed to a trickle, tile set directly on drywall (or worse, directly on studs), and vent stacks that were never properly tied in. A cosmetic flip — new tile on top of rotted substrate — creates a bigger problem in two years. We tear out to studs, verify or replace the substrate, and build it right the first time.
We are a frame-to-finish contractor, which means our plumbers, tile setters, and finish carpenters all work for us. There is no subcontractor handoff that costs you two weeks of silence. The Town of Islip requires permits for plumbing alterations and electrical work in bathrooms, and we manage that process start to finish, including the required rough-in and final inspections.

Bay Shore's proximity to the Great South Bay means humidity levels run high, especially in the warmer months. Bathrooms that were not originally built with proper ventilation and moisture barriers show it fast: paint bubbles, grout darkens and cracks, and subfloors go soft. Every bathroom remodel we do in Bay Shore includes a properly sized exhaust fan vented to the exterior, cement board or equivalent moisture-resistant substrate behind all tile, and waterproofing membranes in shower and tub surrounds.
For homes in FEMA flood zones south of Montauk Highway, we also look at what is directly below the bathroom. A first-floor bath above a flood-vented crawlspace has different framing and insulation requirements than one in a house on a conventional foundation. We price those site-specific requirements accurately from the start rather than discovering them mid-demo.


Bathroom remodels in Bay Shore range from a straightforward tub-to-shower conversion in a Cape's hall bath to a full primary suite expansion in a bay-front estate. Typical mid-range full bathroom remodels on the South Shore fall in a range that reflects current labor and material costs, with high-end finishes and structural changes adding to that figure. A free written estimate is the only honest way to give you a real number for your specific bathroom.
Text or call us at 631-741-0199. We will walk the space, note the site-specific conditions, and hand you an itemized written estimate before we leave.






The Town of Islip requires permits for plumbing alterations, electrical work, and structural changes. A purely cosmetic update — replacing fixtures in the same location, retiling without moving plumbing — often does not require a permit, but anything involving pipe relocation, a new circuit, or a layout change does. We assess permit requirements during our walk-through and handle all filings.
Yes. Tub-to-shower conversions are one of the most common bathroom projects we do on older South Shore homes. The work involves removing the tub, reworking the drain and any supply lines, framing the shower curb or entry, applying waterproofing, and tiling. If the subfloor shows moisture damage under the old tub — common in homes from the 1950s and 1960s — we replace it before closing up.
If we open a wall or floor and find mold, we stop, photograph it, and show you before removing anything. We remediate affected framing and substrate, treat the area, and rebuild with proper moisture barriers. We do not cover it up and move on. The cost of remediation is itemized separately in a change order so you know exactly what you are paying for.
Get a free, no-obligation estimate for your project today.