Research by DoINeedAPermit Research Team · Updated May 2026
The Short Answer
A full bathroom remodel in St. Marys requires a permit if you're relocating plumbing fixtures, adding electrical circuits, installing a new exhaust fan, converting between tub and shower, or moving walls. Surface-only work — tile, vanity, or faucet replacement in the existing footprint — does not.
St. Marys Building Department processes bathroom permits through Camden County's adopted code (Georgia Amendments to the International Building Code), with one city-specific wrinkle: St. Marys sits in a historic district overlay that can trigger additional scrutiny on visible exterior elements (soffit vents, ductwork routing). Unlike some coastal Georgia municipalities that implement stricter humidity/mold controls, St. Marys follows standard Georgia code without enhanced ventilation mandates. The permit fee ranges $250–$600 depending on the valuation of materials and labor; the city charges roughly 1.5–2% of construction cost on plan-review permits. Plan review turnaround is typically 5–7 business days for a straightforward remodel (no plan revision needed), but if your exhaust ductwork termination isn't clearly shown or your shower waterproofing system isn't specified by product name, expect a revision request that adds 3–5 days. Owner-builders can pull permits under Georgia Code § 43-41 as long as the home is their primary residence. The key local difference: because St. Marys has relatively shallow groundwater in some neighborhoods (Coastal Plain soils drain poorly), the city's inspector may flag any subfloor work near the slab and request additional moisture barriers — a detail that sometimes surprises homeowners pulling permits in adjacent unincorporated Camden County.

What happens if you skip the permit (and you needed one)

St. Marys bathroom remodel permits — the key details

St. Marys Building Department uses the Georgia Amendments to the International Building Code (IBC) and International Residential Code (IRC), adopted statewide and enforced locally. The core rule: any change to plumbing or electrical systems, any wall removal or repositioning, or any tub-to-shower conversion requires a permit and plan submission. The 'plan' is simpler than a whole-house renovation — typically a one-page bathroom layout showing existing and proposed fixture locations, drain/vent routing, electrical panel/outlet locations, and exhaust fan duct termination. IRC P2706 governs drain-trap installation; if you're moving a toilet drain, the trap arm (the horizontal pipe from the closet flange to the vent) cannot exceed 6 feet in length without a separate vent line, and the slope must be 1/4 inch per foot. IRC M1505 mandates that any bathroom exhaust fan must duct outdoors to the roof soffit or wall (not into an attic), and ductwork must be a minimum 4-inch diameter rigid or semi-rigid duct with an insulated damper. Many St. Marys contractors use flexible white vinyl duct — code-compliant, but inspectors will check that it's properly sealed at the fan and termination and that the damper is spring-operated or gravity-flapper type. For a tub-to-shower conversion, IRC R702.4.2 requires the entire surround (floor, walls 6 feet up minimum) to be covered with a water-resistant membrane (cement board plus a waterproofing membrane product, or integrated water-resistant panels). Inspectors in St. Marys will ask for the product name — 'Kerdi board and Schlüter Kerdi-Fix' or 'HardieBacker and RedGard' — because they're verifying the assembly meets code. Simply tiling over drywall does not pass final inspection.

Every project is different.

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City of St. Marys Building Department
Contact city hall, St. Marys, GA
Phone: Search 'St. Marys GA building permit phone' to confirm
Typical: Mon-Fri 8 AM - 5 PM (verify locally)
Disclaimer: This guide is based on research conducted in May 2026 using publicly available sources. Always verify current bathroom remodel (full) permit requirements with the City of St. Marys Building Department before starting your project.