Will Old Plumbing Stop You From Selling Your Miami Home?
Old plumbing doesn't kill a sale by itself. It kills your buyer's insurance policy, and that kills the loan. Citizens updated its four-point inspection form in March 2026 to ask more specific questions about pipe age and material, and in Coral Gables, South Miami, and Pinecrest, where most of the housing stock predates 1970, that update is already showing up in failed inspections mid-contract.
By Lynley Ciorobea | August 26, 2026
A house near Sunset Drive in South Miami almost lost its buyer last month over three inches of cast iron nobody could see. The drain line, original to 1964, had been corroding from the inside for decades. The seller had no idea. Neither did the buyer, until the four-point inspection came back and the insurer said no.
That's not a rare story anymore. South Miami's median home was built in 1966. Pinecrest's median is 1969. In Coral Gables, roughly 40% of the housing stock dates to the 1940s through the 1960s, with another 12% built before 1939. Most of that inventory predates PVC and PEX plumbing entirely. Cast iron was standard through the 1970s. Polybutylene, the gray plastic pipe that replaced it, ran from 1978 to 1995 and turned out worse: a $1.14 billion class-action settlement in the mid-1990s confirmed it reacts with chlorinated water and fails from the inside with no warning.
Insurers have caught up to this. Citizens' updated 4-point form now includes specific fields for piping material, drain pipe age, water heater age, and any visible signs of leaks. Most carriers already require an inspection at 30 years and nearly all require one at 40. If it flags active polybutylene or advanced cast iron corrosion, coverage gets declined outright or made contingent on a full repipe. Almost no standard Florida carrier will write around it.
Here's the part that catches sellers off guard: it isn't your problem until it's your buyer's problem, and by then it's already yours again. A financing contingency built on your buyer securing insurance doesn't care whose pipes are inside the walls. If the policy falls through, so does the loan, three weeks before a closing that looked done.
What It Actually Costs to Fix
A supply-line repipe with PEX typically runs $4,500 to $15,000 in Florida, depending on the home's size and slab construction. If the failure is in the drain line, the more common issue in cast iron homes, trenchless lining can restore it without excavation for around $17,000 on a 2,000-square-foot house. Traditional excavation, digging up the slab or yard, runs $50,000 to $75,000. Nobody wants to hear those numbers three weeks before a listing goes live, and nobody should hear them for the first time from a buyer's inspector.
You have three real options once you know what you're dealing with:
Get a four-point inspection now, before you list, so you're choosing your fix instead of reacting to someone else's.
If it fails, repipe or reline before you go live. It's the cleanest sale, even though it costs the most up front.
Disclose the condition and price accordingly, letting a buyer negotiate a credit instead of walking cold.
What you can't do is stay quiet about it. Florida's disclosure law treats a known material defect the same whether it's a leaking roof or a failing drain line, and an as-is clause doesn't erase that duty.
This is the same four-point inspection that's already tripped up Coral Gables, South Miami, and Pinecrest sellers over Federal Pacific panels and aluminum wiring. Plumbing is just the system nobody thinks to check until an underwriter does. If you're weighing your full pre-listing checklist for a Coral Gables, South Miami, or Pinecrest sale, this belongs on the list next to the roof and the panel.
If your home was built before 1980 and hasn't had a plumbing inspection in the last few years, get one before you sign a listing agreement, not after an accepted offer falls apart. I've watched this exact scenario cost sellers six weeks of momentum. It's avoidable.
Frequently Asked Questions
Will a four-point inspection automatically fail my Miami home over old pipes?
Not automatically. Inspectors document the plumbing material and its condition, and carriers decide from there. A home with intact cast iron and no leak history can still pass, though most carriers now flag active polybutylene regardless of condition.
Can I sell my house without fixing the plumbing first?
Yes, but you'll need to disclose what you know. Buyers will likely negotiate a credit or ask for a four-point inspection as a contract condition, and some will walk if their insurer won't write a policy at any price.
Does homeowners insurance require repiping the whole house?
Usually only if the inspection finds polybutylene supply lines or advanced cast iron deterioration. Partial repairs sometimes satisfy a carrier, but most want the full system addressed rather than patched section by section.
How do I know if my house has cast iron or polybutylene pipes?
Cast iron shows up in most Miami-Dade homes built before the mid-1970s, usually in the drain and vent system. Polybutylene, a dull gray plastic pipe, was installed mostly between 1978 and 1995. A licensed plumber or four-point inspector can confirm which one you have within an hour.
Is this covered under Florida's seller disclosure requirements?
Yes. Known plumbing defects fall under the same duty established by Johnson v. Davis: material facts that affect value and aren't obvious to the buyer must be disclosed, regardless of whether the contract is written as-is.
The pipes you can't see are exactly the ones that end up deciding whether your closing happens on time. If you're not sure what's running through the walls of your home, that's a five-minute conversation worth having before you list, not after an underwriter brings it up for you. Reach out anytime and we can look at your plumbing history alongside the rest of your pre-listing plan.
About Lynley Ciorobea
Lynley Ciorobea is a Miami-born real estate professional known for helping homeowners successfully prepare, position, and sell their homes across Coral Gables, South Miami, Pinecrest, Palmetto Bay, and the surrounding southern Miami neighborhoods. Since 2007, she has built her business around thoughtful strategy, strong negotiation, and a marketing-first approach designed to help listings stand out in an ever-evolving market.
A true local, Lynley grew up in Pinecrest and graduated from Palmer Trinity School before attending Duke University, where she earned a BA in Psychology. Her deep roots in Miami give her a nuanced understanding of the architecture, lifestyle, and character that make each neighborhood distinct. From classic Old Spanish homes in Coral Gables to newer construction in South Miami and Pinecrest, she brings a local perspective that goes far beyond surface-level market knowledge.
Over the years, Lynley has naturally become a trusted resource for homeowners preparing to sell. Many of her clients come to her long before their home ever hits the market, looking for guidance on timing, pricing, improvements, and how to position their property thoughtfully. She approaches each listing as a strategic launch rather than a simple transaction, combining market insight, negotiation experience, and elevated marketing to help sellers move forward with clarity and confidence.
As the founder of the Lynley Residential Group, Lynley remains personally involved in every listing she represents. She leads each transaction from initial strategy through closing, ensuring that every detail — from pricing and preparation to storytelling and exposure — reflects the uniqueness of the home itself. Her work often centers on architecturally interesting properties and homes where thoughtful positioning can make a meaningful difference in outcome.
Throughout her career, Lynley has consistently ranked among the top real estate agents in Miami. She has been recognized as part of EWM's Chairman's Club, placing in the top 5% of the company; in 2022 she was honored as the #2 individual agent at the company overall with $37 million in annual sales; and she's a leader in Miami with Real Broker. With more than $100 million in career transactions and more than 60 5-star Google reviews, her experience spans a wide range of property types while maintaining a strong focus on seller representation in southern Miami.
Beyond her work with clients, Lynley is known locally for her market insight and community-focused content. Through her weekly newsletter, neighborhood videos, blog posts, and social media, she shares thoughtful perspectives on the Miami real estate market and the lifestyle that surrounds it. Her approach is informative without being overwhelming, offering homeowners a clear understanding of how market conditions affect real decisions.
If you're preparing to sell a home in Coral Gables, Coconut Grove, South Miami, Pinecrest, Palmetto Bay, or nearby areas, Lynley offers a local perspective shaped by experience, relationships, and a genuine understanding of what makes Miami homes so special. Learn more at lynleyresidential.com.