Plumbing for a Home Renovation in South Florida: What to Know Before You Start

The best time to fix plumbing in a South Florida home isn't when something breaks. It's during a planned renovation — when walls are already open, budgets account for finish work, and the permit process covers the plumbing scope. We take on residential renovation projects across Miami-Dade, Broward, and Palm Beach, and the homes that turn out best are the ones where the plumbing was planned before the demo started.

Here's what every homeowner should know before starting a kitchen, bathroom, or whole-home remodel in South Florida.

Why renovations are the right time to upgrade plumbing

Five times out of ten, when we open a wall in a South Florida home built before 2000, we find something worth replacing: corroded galvanized steel, a deteriorating cast-iron drain, an old PVC joint that's leaking imperceptibly, a shutoff valve that would fail if ever turned. The marginal cost to replace these during a remodel is small. The cost to replace them later — after the new tile, the new drywall, and the new cabinets are installed — is often five to ten times as much.

What requires a plumbing permit in South Florida

Most Florida municipalities — and all three South Florida counties — require a permit for any plumbing work that:

• Moves or adds a fixture (toilet, sink, tub, shower, washer, dishwasher, ice maker line)
• Extends or alters drain or vent lines
• Replaces water supply lines in walls or floors
• Installs or replaces a water heater (gas or electric)
• Adds a tankless water heater or on-demand system
• Changes the main water service or sewer lateral

What typically doesn't require a permit: replacing a faucet, toilet, or dishwasher in the same location with no changes to the supply or drain.

Kitchen renovation: plumbing scope

A typical South Florida kitchen renovation plumbing scope includes:

• Rough-in for sink location (supply + drain + dishwasher tie-in + disposal)
• Ice maker line to refrigerator position
• Pot filler over range (if specified)
• Instant-hot water dispenser tap (optional)
• Gas line for range or cooktop (if going from electric to gas)
• New shutoffs for all fixtures (always replace during remodel)
• Any changes to drain stack or vent required by new layout

For kitchens, we typically do two site visits: a rough-in (after demo, before drywall) and a finish install (after cabinets and countertops are set).

Bathroom renovation: plumbing scope

Bathroom renovations are the most plumbing-heavy rooms in a home. Typical scope:

• Toilet rough-in (may need to re-flange if floor height changes)
• Vanity sink rough-in (often moved during remodel)
• Shower/tub valve, drain, and optional body sprays or rain head
• Tub drain (may need to replace with brass if old lead/iron)
• New shutoffs throughout
• Venting updates for any fixture that's moved
• Pressure balancing valve (required by Florida code — most older bathrooms don't have one)

Whole-home and gut renovation

For whole-home remodels, we approach plumbing in three phases coordinated with the general contractor:

1. Phase 1 — Tear-out and assessment. After demo, we walk the house and document existing pipe types, condition, and any code issues. You get a written scope with options (minimum code replacement vs. full rework).
2. Phase 2 — Rough-in. New supply lines (PEX or copper), new drain/vent rework if needed, new shutoffs, water heater upgrade, gas lines if applicable. Inspection required before drywall.
3. Phase 3 — Finish. Install all fixtures after tile, flooring, and cabinets are in. Pressure test, final inspection, and turnover to owner.

Working with an insured, licensed plumber on a renovation

Florida requires a state-certified plumbing contractor license for anyone performing plumbing work beyond a homeowner permit. On renovation projects, we provide:

• State plumbing license and liability/workers' comp insurance certificates for your GC's records
• Permit pulls (we can pull plumbing permits directly or coordinate under the GC's master permit)
• Written rough-in and finish scope with fixture counts and line-item pricing
• Coordination with the GC schedule to prevent delays between trades
• Inspection scheduling and corrections
• Warranty on all installed work

Budget reality check for plumbing in a South Florida renovation

Plumbing typically represents 5–15% of a renovation budget, depending on scope:

• Simple bathroom refresh (same layout, new fixtures): $1,500–$4,000
• Bathroom gut renovation (new layout, moved fixtures): $4,000–$10,000
• Kitchen renovation (standard scope): $3,000–$8,000
• Whole-home gut renovation (3BR/2BA): $15,000–$35,000
• Pre-1985 home with galvanized or cast-iron replacement: add $8,000–$20,000

These are South Florida averages for licensed, permitted work. Very low bids on renovation plumbing almost always mean cut corners, unpermitted work, or unlicensed labor — all of which cost more to fix later.