1. FL Bathroom Remodel Permit Requirements by Scope
Florida building permit requirements for bathroom remodels follow the Florida Building Code (FBC) strictly.
NO PERMIT (Not Required in FL): Replacing fixtures in same location (toilet, faucet, showerhead, mirror, vanity light) — same holes, same connections; painting, flooring over existing (no subfloor work), cabinet hardware replacement.
PLUMBING PERMIT REQUIRED: Any new rough-in (moving drain, supply, or vent locations); tub-to-shower conversion (requires new drain location + waterproof liner); new bathroom addition; water heater replacement in bathroom (separate permit).
BUILDING + PLUMBING PERMIT: Structural wall changes or removal; new window or skylight; adding exhaust fan where none existed (electrical permit also); floor system modification; adding square footage.
FL practical rule: if you are changing where anything drains or where supply lines connect — pull a permit. If unpermitted bathroom work is discovered during home sale (very common in FL), remediation can cost $5,000–20,000 and kill the deal.
2. FL Wet Area Waterproofing: The Non-Negotiable
FL's humidity makes bathroom waterproofing more critical than almost anywhere in the country. FBC Section R307 and ANSI A108 standards govern FL shower waterproofing.
- Traditional Mortar Bed with CPE Liner: Fiberglass or PVC liner (40-mil min) set in sloped mortar bed. Lifespan 15–25 years. Cost $400–800.
- Sheet Membrane (Schluter Kerdi, Wedi): Fabric/foam membrane bonded to substrate. Fast install. Lifespan 20–30 years. Cost $600–1,200. Excellent for renovations over existing subfloor.
- Liquid-Applied Membrane (RedGard, HydroBar, Laticrete Hydro Ban): Most economical. Min 60-mil for FL wet areas. Lifespan 10–20 years. Cost $200–500 materials.
FL mold tip: regardless of waterproofing system, use only epoxy grout in FL showers. Cement grout absorbs water and molds within 1–3 years in FL humidity. Epoxy grout costs $80–200 more but lasts 20+ years without mold.
3. FL Tub-to-Shower Conversion: The Most Common FL Remodel
The bathtub-to-walk-in-shower conversion is the single most common FL bathroom remodel, driven by FL climate, aging population, and resale value.
FL Plumbing Requirements: - Drain relocation: Tub drain (typically 14″–18″ from wall) must move to shower center. Requires cutting concrete slab in most FL homes. Slab cut cost: $400–800. - Valve replacement: Use pressure-balance (ASSE 1016) or thermostatic valve (ASSE 1070). - Waterproofing: Full shower waterproofing system required. - Shower door/enclosure: Frameless glass is FL standard ($800–2,500). Tempered safety glass per FL code required. - Permit: Required (drain relocation = slab penetration).
Complete tub-to-shower conversion cost (FL, all trades): $4,000–$12,000 (Plumbing $1,500–4,000 + Tile $1,500–4,500 + Glass door $800–2,500).
4. FL Shower Valve Selection for Remodels
- Pressure-Balance Valve (ASSE 1016): Required by FL code. Maintains temp when pressure changes. FL standard: Moen Posi-Temp, Delta Monitor, Kohler Rite-Temp. Installed: $350–600.
- Thermostatic Valve (ASSE 1070): Maintains exact temp set point. FL brands: Rohl, Hansgrohe, Grohe, Kohler DTV. Installed: $700–2,500+.
- Volume Control Separated from Thermostatic: Common in luxury FL master baths; allows body sprays/rainhead on separate volume controls.
FL hard water note: specify ceramic disc cartridges in all FL shower valves. Rubber cartridges fail in 2–4 years vs. 10–15 for ceramic disc.
5. FL Exhaust Fan Requirements in Bathroom Remodels
FBC Section M1507 requires mechanical ventilation in bathrooms without operable exterior windows. - Minimum exhaust rate: 50 CFM intermittent, 20 CFM continuous - FL showers: 1 CFM per sq ft, min 50 CFM - Steam showers: 200+ CFM - Duct to exterior — no attic termination (common FL code violation creating attic mold) - FL recommended fans: Panasonic WhisperCeiling, Broan-NuTone 688, Delta BreezSmart (humidity sensing)
Fan replacement cost: $150–350. New install + exterior duct: $300–600.
6. Florida Trade Sequencing for Bathroom Remodel
Standard FL sequence for full gut remodel: - Week 1: Day 1 demo; Day 2 plumber rough-in (relocate/add drain, supply, vent; rough-in inspection); Day 3 electrician rough-in (GFCI, fan, lighting; inspection). - Week 2: Day 4–5 cement board/Wedi + waterproofing cure; Day 6 tile (floor then walls); Day 7 grout (epoxy preferred). - Week 3: Day 8 plumber finish; Day 9 electrician finish; Day 10 glass enclosure; Day 11 final inspection; Day 12 punch list.
FL common delays: permit (1–5 days), inspection scheduling (2–5 days), tile special order (2–3 weeks), custom glass door (2–4 weeks). Plan 4–8 weeks total.
7. FL Master Bath Walk-In Shower Design: Plumbing Considerations
- Multi-Head Systems: Require thermostatic mixing valve with multiple volume controls; pressure booster pump if home pressure under 60 PSI; min 3/4″ supply line to shower valve.
- Minimum Shower Size: 30″×30″ min (IRC). ADA accessible 36″×36″, 60″×36″ for roll-in. Zero-threshold entry requires linear drain.
- Curbless Shower in FL: Excellent choice — no curb = no water retention. Min 1/4″ per foot slope; waterproof system extending 12″+ beyond shower.
- Digital Shower Controls: Kohler DTV+, Moen U, Hansgrohe ShowerSelect. Ensure IP44 minimum rating for humid bathroom.
8. FL Bathroom Remodel Cost by Project Type
Half Bath: Cosmetic $2,500–6,000; Standard $5,000–12,000; Full gut $8,000–18,000. Full Bath: Cosmetic $4,000–10,000; Standard $8,000–20,000; Full gut with new shower $15,000–35,000. Master Bath: Standard $15,000–35,000; Full gut walk-in shower + soaking tub $30,000–80,000; Luxury $50,000–150,000+.
Plumbing as % of total (standard): 20–35%. S FL midrange remodel ROI 65–75% (NAR 2024 Cost vs. Value), upscale 55–65%. Walk-in shower conversion has highest ROI for S FL market.
FL Bathroom Permit Requirements
PERMIT REQUIRED: Any new/relocated rough-in; tub-to-shower conversion; new bathroom addition; shower valve replacement inside wall (some jurisdictions); water heater replacement. NO PERMIT: Like-for-like fixture replacement; faucet/showerhead/toilet replacement; vanity/mirror/accessories; painting/flooring over existing.
FL County Combined Permit Fees
| County | Combined Fee Range | Processing |
|---|---|---|
| Miami-Dade | $250–700 | 3–7 days |
| Broward | $200–550 | 2–5 days |
| Palm Beach | $200–600 | 2–6 days |
| Orange | $175–450 | 2–5 days |
| Hillsborough | $175–500 | 2–5 days |
| Pinellas | $175–450 | 2–4 days |
| Duval | $200–500 | 2–5 days |
| Lee | $175–450 | 2–5 days |
| Collier | $200–550 | 3–6 days |
| Sarasota | $175–450 | 2–4 days |
| Polk | $175–400 | 2–4 days |
| Volusia | $175–450 | 2–5 days |
| Brevard | $175–400 | 2–4 days |
| Manatee | $175–450 | 2–5 days |
| St. Johns | $175–400 | 2–4 days |
FL Code References
- FBC Residential R307 — Bathroom fixtures and clearances
- FBC Plumbing 402–405 — Fixture installation requirements
- ANSI A108.01 — Wet area tile and waterproof membrane
- ASSE 1016 — Pressure-balance shower valves (required in FL)
- ASSE 1070 — Thermostatic mixing valves
- FBC Mechanical M1507 — Bathroom exhaust ventilation
- FL Statute 489.105 — Licensed contractor required for rough-in
- FBC Energy Code C403 — Water heating for bathroom additions
- IPC 404 — Water closet requirements and clearances
- FL Statute 689.261 — Real estate disclosure for unpermitted work
FL Clearance Requirements (FBC R307)
| Fixture | Minimum Clearance |
|---|---|
| Toilet — side wall to center | 15″ minimum |
| Toilet — front clearance | 21″ minimum |
| Shower — minimum size | 30″ × 30″ |
| ADA shower minimum | 36″ × 36″ |
| ADA roll-in shower | 60″ × 36″ |
| Lavatory — side clearance | 4″ from wall to center |
| Lavatory — front clearance | 21″ minimum |
| Bathtub — side access | 24″ minimum |