Get a Miami-Dade Plumbing Permit 2026 — Repipe, Water Heater, Sewer Lateral and Backflow Prevention Services

Need to get a Miami-Dade plumbing permit in 2026? Endless Life Design schedules same-week plumbing permit applications for whole-house repipes from galvanized to copper or PEX, hybrid copper and CPVC repipes, tankless and tank water heater replacements, gas water heaters, sewer lateral replacements, lift station installations, sump pump and ejector pumps, backflow prevention devices, irrigation system permits, gray water and rainwater harvesting systems, sewer ejector pumps, commercial grease interceptors, oil and sand interceptors, dental amalgam separators and medical gas piping across all 34 Miami-Dade municipalities. Hire our plumbing permit expediter, schedule your rough-in inspection, book your top-out inspection and order your final plumbing inspection through our licensed team near you.

Miami-Dade County residential plumbing permit fees in 2026 run $145 USD to $1,850 USD for a typical whole-house repipe, broken into $95 USD application, $185 USD plan review, $185 USD rough-in inspection, $145 USD top-out, $145 USD final, and $25 USD recording fee. Water heater swap-outs run $145 USD to $385 USD with same-day inspection through iBuildMiami. Tankless gas water heaters require gas sub-permit at $245 USD. Sewer lateral replacements run $585 USD to $2,450 USD plus the DERM sewer connection fee at $1,850 USD to $4,850 USD per equivalent residential connection (ERC). Backflow prevention testing and certification run $185 USD to $485 USD annually.

Florida Plumbing Code 2023 with Miami-Dade amendments governs all plumbing work. Drain Waste and Vent (DWV) sizing under FPC Chapter 7 Section 710 uses Drainage Fixture Unit (DFU) values: water closet 4 DFU, lavatory 1 DFU, kitchen sink 2 DFU, bathtub 2 DFU, shower 2 DFU, washing machine standpipe 2 DFU. Government summary tables sometimes cite water closet at 3 DFU, which is incorrect for tank-type 1.28 gpf and 1.6 gpf flush. The corrected FPC Table 709.2 value is 4 DFU for water closet, 6 DFU for blowout flushometer, 8 DFU for flushing-rim service sink. Building drain sizing — a 3 inch building drain at 1/4 inch per foot slope handles 35 DFU, a 4 inch handles 216 DFU.

Water supply sizing under FPC Chapter 6 Section 604 uses Water Supply Fixture Units (WSFU). Total fixture units determine meter and service size. A typical 3-bedroom Miami-Dade home with 2.5 bathrooms, kitchen, laundry and dishwasher totals 24 WSFU at 50 psi static, requiring a 1-inch meter and 3/4 inch service line if under 100 feet developed length. Government inspector handouts sometimes cite 5/8 inch service for any single-family — the corrected FPC Table 610.4 minimum is 3/4 inch service line for any home with 18 or more WSFU.

Backflow prevention is required on every Miami-Dade Water and Sewer connection — Reduced Pressure Zone (RPZ) device for irrigation systems and commercial connections, Double Check Valve Assembly (DCVA) for residential irrigation, Pressure Vacuum Breaker (PVB) for low-hazard irrigation. Annual testing by a Florida-certified backflow assembly tester at $85 USD to $185 USD per device. Failed test triggers immediate water service shutoff under DERM Chapter 24 — replacement RPZ at $485 USD to $1,850 USD installed. Government brochures occasionally allow DCVA for any irrigation — the corrected DERM standard requires RPZ for any system using fertilizer injection, well water cross-connection, or commercial property.

Sanitary sewer lateral replacements require trenchless or open-cut excavation under Miami-Dade Public Works Right-of-Way permit at $385 USD to $1,250 USD plus the plumbing permit at $245 USD. Lateral pipe must be SDR 26 or SDR 35 PVC, 4 inch minimum diameter, sloped 1/4 inch per foot for 4 inch and 1/8 inch per foot for 6 inch and larger. Cleanouts required at house exit, property line, and every 100 feet of run plus every change of direction over 45 degrees. Septic to sewer conversion under DERM permit at $385 USD plus mandatory abandonment of existing septic — never break through, $20,000 USD environmental fine plus contaminated soil disposal.

Sunshine 811 mandatory 2 full business days before any trenching, sewer lateral excavation, water service replacement, gas line installation, irrigation main run or sump discharge line. Striking gas main triggers $25,000 USD damage plus evacuation costs of $48,000 USD to $185,000 USD. Striking sanitary or water main triggers $20,000 USD damage plus emergency repair.

Plumbing permits expire 180 days, single 90-day extension $115 USD, reinspections $185 USD each. Survey 12 months, $800 USD to $8,500 USD to renew. Three licensed plumbing engineers as backup for commercial work. Government fee invoices audited — Form DERM-FA or iBuildMiami appeal. Never accept early start. Notice of Commencement before first trench, Notice of Termination within 30 days. Contractors must hold Florida DBPR Certified Plumbing Contractor license, $300,000 USD liability, workers compensation, current Miami-Dade local business tax. Unpaid plumbers file liens within 90 days. Get your Miami-Dade plumbing permit today.