Florida is one of the most beautiful places in the world to own a home. It is also one of the most unforgiving climates for a property that is sitting empty for six months.
The heat, humidity, storms, wildlife, and relentless Florida sun create a perfect storm of conditions that turn small, easily-fixable issues into expensive disasters — fast. And the most frustrating part? Nearly all of these problems are completely preventable with regular professional monitoring.
Here are the 10 most common — and costly — things we see go wrong in vacant Martin County and Treasure Coast homes every summer.
Florida's summer heat is brutal on HVAC systems running continuously at 78-80 degrees in an empty home. Clogged filters, refrigerant leaks, and compressor failures are extremely common — and when the A/C stops, indoor humidity climbs fast. The EPA recommends keeping it below 60% (EPA); above that, mold becomes a real risk.
Mold is one of the most common issues we look for in vacant Treasure Coast homes. Any moisture intrusion — a leaking pipe, a failing AC, a cracked window seal — combined with 90-degree heat creates ideal mold conditions. The EPA advises drying water-damaged materials within 24–48 hours to help prevent mold growth, which is hard to do when nobody's home.
Water heaters, supply line hoses, and irrigation systems are the most common sources of slow leaks in vacant Florida homes. A pinhole leak in a supply line behind a wall can go undetected for weeks, saturating drywall and subfloor. Many homeowners come back in November to floors that need complete replacement.
An unoccupied home is an open invitation for Florida's wildlife. Palmetto bugs, rats, squirrels, and even snakes have been found in vacant homes across Martin County. Rodents chew through electrical wiring — a fire hazard — and contaminate insulation that requires full replacement. Termite activity also accelerates in humid, unmonitored conditions.
Hurricane season runs June 1 to November 30, overlapping almost exactly with the months snowbirds are away. A loose shingle, a lifted roof membrane, or a cracked ridge cap — all invisible from the street — can allow water intrusion after every rain event for months before discovery. The resulting structural damage is far more expensive than the original repair would have been.
An unmonitored pool in a Florida summer turns green within two weeks without proper chemical maintenance. Beyond aesthetics, algae-filled pools attract mosquitoes and wildlife, and pool equipment — pumps, heaters, and automation systems — can fail silently for months.
Florida's summer rainy season combined with a running irrigation system leads to either underwatering during dry spells or severe overwatering during wet ones. Failed irrigation heads, broken lines, and timer malfunctions are extremely common — and can kill established landscaping that took years to grow. HOA communities in Martin County often fine homeowners for dead or overgrown lawns.
Vacant homes are targets. Whether it is opportunistic theft, vandalism, or in extreme cases squatters — an unoccupied property that shows no signs of regular activity is far more vulnerable than one with a visible professional monitoring presence. In Florida, squatter removal can become a lengthy legal process if not caught early.
Water heaters in Florida homes work hard year-round and don't last forever. A failed water heater in a vacant home can leak slowly for weeks or fail catastrophically — releasing 40-80 gallons of water onto your floor. A pressure relief valve that has not been tested recently is a time bomb in any vacant property.
After tropical storms, debris accumulates quickly — fallen branches, scattered furniture, damaged screen enclosures. Many HOA communities in Palm City, Sewalls Point, and Hobe Sound require prompt cleanup or issue formal violations. Fines can add up while you're away.
| Months | What to watch | Why |
|---|---|---|
| May – June | A/C, humidity, pool chemistry, irrigation timers | Owners leave, the heat ramps up, and the rainy season starts |
| June – November | Roofs, screen enclosures, storm debris, shutters | Atlantic hurricane season runs June 1 – November 30 |
| July – September | Mold, A/C drain lines, ceiling stains after storms | Peak heat and humidity plus daily afternoon storms |
| All summer | Pests, unauthorized entry, HOA appearance | Empty homes with no visible activity |
| October – November | Arrival prep, post-season roof and interior check | Owners return; hidden damage from the summer shows up |
The full printable version: closing your Martin County home for summer. Curious what a professional visit covers? See what a home watch visit includes, or local pages for Stuart, Hobe Sound and Palm City.
Moisture: A/C failures, clogged condensate lines and slow plumbing leaks that lead to high humidity and mold. That's why interior checks matter more than drive-bys.
The EPA recommends keeping indoor humidity below 60%, ideally between 30% and 50%.
Leak and humidity sensors alert your phone in real time, and regular home watch visits with photo reports catch what sensors can't, like roof damage, pests and storm debris.
Every single one of these problems has one thing in common: they are catastrophically more expensive when discovered late. A home that is regularly inspected, photographed, and monitored catches these issues while they're still small. For scale, water damage and freezing claims averaged about $15,400 per claim from 2019 to 2023 (Insurance Information Institute).
That is exactly what professional home watch provides — eyes on your property every week, a trained professional who knows what to look for, and timestamped photo documentation that protects you with your insurance company when you need it most.
Which of these problems shows up first depends on where your home is. Island condos fight salt air and leaks from the unit above: Hutchinson Island condo watch. Lagoon-side homes and 55+ communities: home watch services in Jensen Beach. Shady, wooded lots: home watch in Hobe Sound. Bigger homes with pools and generators: Palm City home watch. Second homes: vacation home watch in Stuart.
We visit properties across Stuart, Palm City, Hobe Sound, Jensen Beach and all of Martin County. Photo reports every visit, same-day storm response. Starting at $75 for a one-time visit or $89/month.
Book Your First Visit TodayA one-page, printable list of everything to do before you leave your Florida home: water, A/C, storm prep, insurance and more.
Tell us where your home is and when you're leaving. We'll reply personally with a recommended plan and a time for a free walkthrough.