Questions to ask
1. Are you licensed as a plumbing contractor with Florida DBPR / the Construction Industry Licensing Board (CILB), do you also meet Miami-Dade CTQB / local contractor requirements, and can I see the numbers?
Why it matters: In Florida, plumbing contractors are licensed through the Department of Business and Professional Regulation (DBPR) under the Construction Industry Licensing Board (CILB). Ask whether they hold a Certified Plumbing Contractor license (statewide; often shown with a CFC-style license number) or a Registered Plumbing Contractor license, and confirm the license status is current and active. Verify the individual and the business name through the official MyFloridaLicense.com Licensee Search / Verify a License tool before you authorize work. In Miami-Dade, contractors may also need local certification or registration through the Construction Trades Qualifying Board (CTQB) / Miami-Dade Contractor Licensing Section to pull permits and work legally in the county — ask how they satisfy Miami-Dade local requirements for your job. Also ask for proof of liability insurance and workers’ compensation if they bring helpers — uninsured injury or property damage becomes your problem. “We’re bonded” is not a substitute for verifying Florida DBPR credentials, Miami-Dade local standing, and insurance certificates.
2. Will the estimate be written, itemized, and binding — or is it a rough range?
Why it matters: Verbal quotes invite surprise charges, especially when a slab is opened, a camera finds collapsed or root-intruded drain lines, or storm-driven backup reveals multiple failed sections of pipe. An itemized written estimate (labor, parts, trip charge, permit fees if included, disposal) lets you compare Miami plumbers apples-to-apples. Ask what is excluded, how change orders are priced, and whether the price holds for a defined period. Get the company name, Florida DBPR plumbing contractor license number, and estimate date on the document.
3. Who will actually do the work — you, an employee, or a subcontractor?
Why it matters: Some companies dispatch less experienced techs or subcontractors after a sales visit. Knowing who shows up affects quality, warranty responsibility, and whether the person on-site is covered by the company’s insurance and works under a properly licensed Florida plumbing contractor. Ask whether trainees or helpers work unsupervised on your job and who is responsible if a sub’s work fails. For larger jobs (repipe, sanitary-line / slab work, remodel rough-in, storm-damage repair), confirm a properly licensed plumbing contractor remains accountable for the finished work.
4. What is your warranty on parts and labor, and what voids it?
Why it matters: A clear warranty (duration, what it covers, how to claim) signals confidence. Ask whether manufacturer warranties transfer, whether DIY follow-up work voids their labor warranty, and who you call if a valve or water heater fails six months later. Get warranty terms in writing with the final invoice — especially important after Miami’s humid summers and storm seasons stress aging drains, in older systems that may fail again nearby, and where high water tables or slab conditions stress buried lines after the original repair.
5. Do you pull required permits for this work, and is that included in the price — and which AHJ covers my address?
Why it matters: Installing, relocating, or changing plumbing systems in Miami-Dade generally requires plumbing permits and inspection. For much of the county, that runs through Miami-Dade County Building (Building Permit Application, Plumbing Fee Sheet, and e-permitting for contractors where applicable). But Miami-Dade includes many municipalities — City of Miami, Miami Beach, Coral Gables, Hialeah, and others — and unincorporated areas; your exact Authority Having Jurisdiction (AHJ) may be the county or a city building department. Pros who skip permits “to save you money” leave you exposed if something fails, if insurance questions arise after a storm claim, or when you sell the home. Ask who submits each permit, who pays AHJ fees, whether inspection scheduling is included, and confirm your exact jurisdiction (city vs unincorporated Miami-Dade) before work starts.
6. How do you price emergency or after-hours calls?
Why it matters: Emergency rates can be substantially higher than daytime rates — and Miami’s hurricane and tropical-storm seasons make sewer backups, flooded slabs, and storm-related plumbing failures real after-hours emergencies, while a failed water heater or burst supply line is urgent any season. Get the after-hours multiplier, minimum call-out fee, diagnosis fee, and whether that fee applies to the repair before you authorize a night visit. Ask how they prioritize true emergencies (active flooding, no water, gas smell — call the utility/emergency services for gas) versus next-morning jobs. Clear pricing up front beats arguing over a bill at 2 a.m. after a storm surge or heavy rain event.
7. Given Miami metro housing stock, how will you assess older Miami Beach / Little Havana / Coconut Grove / Coral Gables homes, slab foundations, high water tables, and hard-water or mineral-scale issues before quoting a full fix?
Why it matters: Pre-war and mid-century neighborhoods (Miami Beach, Little Havana, Coconut Grove, Coral Gables, parts of the City of Miami, and similar) and older bungalows, Mediterranean-revival homes, and mid-century stock often sit on slab foundations; high water tables complicate buried repairs; coastal salt air accelerates corrosion on outdoor fixtures and exposed piping; and some areas see hard water or mineral scale that shortens water-heater and fixture life. Suburban stock in Kendall, Homestead, Hialeah, Aventura, and Doral may differ in materials, foundation types, and local code history. A low bid that only patches the visible symptom can miss the larger condition. Ask whether they will check accessible shutoffs, pressure, water heater condition, cleanouts, and nearby piping; whether they recommend section repair vs repipe or sanitary-line options under slab; and how they price exploratory work if flooring or slab must open. Require a stop-and-call process before extra work begins.
8. How do you handle hurricane, storm-surge, and flood-related plumbing — backups, cleanouts, flooded slabs, and post-storm sewer issues?
Why it matters: Miami’s hurricane and tropical-storm seasons routinely overload older laterals and stress drain systems — basement-free slabs still flood at grade, clogged cleanouts, post-storm sewer backups, and saltwater or floodwater intrusion are common calls. Ask whether they camera or snake main lines, locate cleanouts, discuss backwater valves or cleanout access where relevant, and distinguish plumbing drains and private laterals from yard drainage or municipal main problems so the right party owns the fix. Knowing your cleanout and main shutoff locations (often near the front foundation, utility closet, or exterior wall in slab homes) — and having a plan before a named storm — matters as much as the emergency call itself. For flood- or backup-damaged interiors, clarify what is plumbing repair versus when you need water-damage specialists.
9. How do you handle cleanup, floor protection, and any utility coordination (for example Miami-Dade Water and Sewer Department / WASD) at a high level?
Why it matters: Plumbing jobs track water and debris through finished homes — and Miami’s slab foundations, tile floors, and humidity make good floor protection and drying habits pay off. Pros who bring drop cloths, shoe covers, and a cleanup plan reduce secondary damage. If the job involves meter-side issues, private water-line or sewer-lateral questions, or work that may touch Miami-Dade Water and Sewer Department (WASD) rules for service connections or reviews, ask what they handle versus what you must arrange with WASD or your municipal water/sewer utility. Stay general: the plumber should explain their process; verify any utility-side requirements with the utility itself rather than relying on marketing claims. Septic is uncommon in urban Miami but possible on some outskirts — ask if your property is on septic so the right specialist is involved.
10. What brand or grade of fixtures and parts do you typically install, and can I choose?
Why it matters: Cheap valves and supply lines fail early — faster still under salt-air corrosion near the coast, hard-water scale, or post-storm backup stress. Ask about options (builder-grade vs mid-tier), whether they will install customer-supplied fixtures, and how that affects warranty. For water heaters, ask about capacity, fuel type (including tankless where relevant), anode/flush recommendations, expansion tanks or recirculation if in scope, and whether garage or utility-closet placement needs moisture and corrosion protection in Miami’s humid climate. Get model numbers on the written estimate when equipment is part of the job.
11. Can you provide recent Miami-area references for similar jobs?
Why it matters: A water heater swap in Kendall is different from a sanitary-line repair under a Coral Gables slab or a post-storm backup cleanup in Miami Beach. Ask for recent local references for comparable work, how long they have served Miami-Dade and nearby communities, and whether you can see photos of finished jobs. References beat star ratings alone when you need punctuality, permit follow-through, and a fix that lasted through a South Florida storm season.
Red flags
- Cash-only demand, or pressure to pay the full amount before work starts.
- No written estimate, or vague “it depends” pricing with no cap or change-order process.
- Cannot or will not provide a Florida DBPR / CILB plumbing contractor license you can verify on MyFloridaLicense.com, Miami-Dade local standing where required, or an insurance certificate.
- Discourages permits “to save you money” on work that typically needs inspection.
- Dramatically lower bid with no explanation of scope, parts grade, or permit exclusions.
- Arrives unmarked, or wants you to leave the house while they work with no identification.
- Pushes a full repipe, under-slab sanitary replacement, or water heater swap without diagnosing the actual failure or showing you options.
Next-step checklist
- Verify the plumbing contractor’s Florida DBPR / CILB license via MyFloridaLicense.com Licensee Search / Verify a License, and confirm Miami-Dade CTQB / local contractor standing if required for your job, before hiring.
- Get at least two written, itemized estimates for the same scope (parts, labor, permits, exclusions).
- Confirm liability insurance (ask for a certificate with your address if the job is large) and workers’ comp if helpers are on-site.
- Clarify your AHJ (Miami-Dade County Building vs City of Miami, Miami Beach, Coral Gables, Hialeah, or another municipality) and whether permits/inspections are included.
- Agree in writing on warranty length, payment schedule, and the stop-and-call change-order process.
- Locate and test your main water shutoff and cleanout if accessible (often near the front foundation, utility closet, or exterior wall in Miami slab homes); photograph the problem area before work begins.
- Keep receipts, permit numbers, and the final invoice for future buyers or warranty claims.