Common Home Inspection Issues in South Florida
CMI-certified inspectors see these problems daily in Miami-Dade, Broward, and Palm Beach—roof wear, HVAC corrosion, moisture intrusion, and more. Know what to fix before it costs you. Schedule a home inspection or call for same-day availability—200 Google reviews as of September 2026.
Green Foot Home Inspections has documented South Florida houses since 2014. This guide covers the issues that show up often in Miami-Dade, Broward, and Palm Beach files—roof wear, moisture, HVAC corrosion, electrical, and plumbing—and how to think about them before you buy or renew insurance. We report what we see. We do not invent sitewide percentages or repair-dollar averages.
By Fabian Fernandez, CMI® and Sergio Fernandez, CMI® (HI7640 & HI8652). Updated September 28, 2026. Primary context: Florida OIR, Citizens underwriting forms, and InterNACHI practice—not invented failure rates.
Salt Air Corrosion in South Florida Homes
Salt air is a coastal fact of life in Miami-Dade, Broward, and Palm Beach. Homes closer to the water see it first—metal, coatings, and HVAC outdoor units take the brunt—but inland houses are not immune.
When salt particles combine with Florida's 75-90% humidity levels, they create a corrosive environment that attacks metal components, paint, sealants, and coatings at an accelerated rate.
What Gets Damaged by Salt Air?
HVAC Systems (Most Affected)
- Corroded condenser coils reduce cooling efficiency
- Rust on refrigerant lines leads to leaks
- Corroded electrical connections and control boards short out
- Lifespan reduction: 10-12 years → 6-8 years in coastal areas
- Repair cost is a contractor bid (typical condenser work often quoted in the low thousands)
Roofing & Fasteners
- Metal flashing and roof penetrations rust rapidly
- Nails and fasteners corrode, causing loose shingles
- Coatings and sealants deteriorate, allowing water intrusion
- Salt deposits accelerate granule loss on asphalt shingles
Windows, Doors & Exterior Metal
- Window frame corrosion leads to air leaks and seal failure
- Door frames warp and seal failure occurs
- Metal railings, gutters, and downspouts develop white oxidation
- Aluminum siding and soffit corrosion creates pitting and staining
Plumbing Connections
- Copper pipe corrosion (blue-green oxidation)
- Brass valve failure
- Accelerated pipe wall thinning
- Pinhole leaks develop prematurely
Warning Signs of Salt Air Damage
- Discoloration or white/gray streaking on roof materials
- Rust spots on exterior metal components
- Corroded AC condenser unit showing rust or pitting
- Chalky white deposits on windows and exterior surfaces
- Peeling or bubbling paint near coastal areas
- Increased corrosion on fasteners and hardware
- Window seals failing prematurely (5-7 years instead of 10-15)
What GreenFoot Inspectors Look For
During your home inspection, we specifically examine:
- Condenser coil corrosion and outdoor HVAC salt/rust patterns (visual)
- Flashing condition around roof penetrations
- Window seal integrity and caulking degradation
- Metal fastener condition for visible rust
- Exterior paint and coating condition
- Gutter and downspout deterioration
Prevention & Maintenance Strategy
- HVAC Maintenance: Professional rinse-down service quarterly in coastal areas (semi-annual inland)
- Protective Coatings: Apply corrosion-inhibiting coatings to AC units every 2-3 years
- Window Sealing: Inspect and reseal windows twice yearly (spring & fall)
- Gutter Cleaning: Monthly during rainy season to prevent salt buildup
- Roof Inspection: Annual inspection of flashing and fasteners
- Sacrificial Anodes: Consider zinc strips on copper plumbing in older homes
Moisture Intrusion in South Florida Homes
Florida's humidity levels (75-90% year-round) combined with frequent storms create the perfect environment for moisture problems. Unlike other regions where moisture is seasonal, South Florida homes battle constant moisture 365 days a year.
Moisture intrusion is not just uncomfortable—it's dangerous. Hidden water damage causes:
- Mold growth (health hazard)
- Structural rot in wood framing
- Foundation deterioration
- Electrical hazards
- Foundation settlement and cracking
Where Does Moisture Hide?
AC Condensate Systems
- Clogged condensate drain lines cause backup water into walls
- Frozen coils (from overworking) create water overflow
- Standing water in drainage pans promotes mold growth
- Duct work condensation and corrosion
Foundation & Slab Areas
- Capillary action pulls moisture up through concrete slabs
- Absence of vapor barriers under slabs
- Poor grading directing water toward foundation
- Cracks in concrete slab allow water penetration
- Moisture readings at maximum levels while slab appears dry to touch
Walls & Wall Cavities
- Water intrusion through compromised window seals
- Faulty caulking around door frames
- Damaged or missing house wrap and weather barriers
- Moisture trapped in drywall and studs (readings 12-22%)
- Wet bottom plates and furring strips at floor level
Most Common Moisture Issues by County
Miami-Dade County: Slab moisture, failed window seals on older openings, and AC condensate backups show up often in our files. We report what we see—not invented county percentages.
Broward County: Foundation-wall moisture, bathrooms that do not vent outside, and aging roof membranes show up in older-stock files. We report the house in front of us—not a county-wide rate.
Palm Beach County: Older coastal stock, salt air near the water, and weak attic ventilation are common notes. Frequency depends on the building, not a published percent.
Red Flags During Home Inspection
- Musty odor in HVAC closets, utility rooms, or around slab edges
- Dark stains or discoloration on ceilings or walls
- Peeling paint or bubbling wallpaper
- Soft spots in flooring or drywall
- Visible mold or mildew (even if small)
- High humidity readings (above 55% RH)
- AC condensate dripping inside home
- Water stains on ceiling or upper walls (roof leak indicator)
- Efflorescence (white powdery deposits) on foundation walls
How We Check for Moisture
We document what is accessible on the day of the visit:
- Moisture meters on suspect drywall, wood, and plumbing areas when indicated
- Humidity readings where indoor moisture is part of the complaint or finding
- Visual inspection of attics, roofs from accessible vantage points, slabs, and HVAC condensate paths
Repair cost is always a licensed contractor bid. We photograph conditions; we do not invent a sitewide average dollar figure.
What Happens After We Find Moisture
We photograph and describe moisture sources we can access. A licensed contractor (and sometimes a mold specialist) prices the fix from that evidence. We do not publish a remediation price table—ranges vary too widely by house, access, and scope.
Why South Florida Roofs Age Faster—What Inspectors Look For
South Florida roofs face a perfect storm: intense UV radiation, salt air corrosion, hurricane-force winds, heavy rain, and constant humidity. The result: many roofs here reach the end of useful life in the 15–20 year range, sooner than a 25–30 year marketing lifespan. Our roof certification inspections can help identify these issues before they become costly problems.
Why Florida Roofs Fail Faster
UV Degradation: Intense Florida sun breaks down asphalt and coating. Shingle curling and brittleness often show after a decade in this sun. Granule loss accelerates with age.
Salt Air Damage: Metal flashing corrodes and loses water-shedding ability. Fastener corrosion causes loose shingles. Roofing materials near the coast often break down faster than inland stock.
Storm & Wind Damage: Hurricane-force winds (74+ mph) common June-November. Most claims: $1,200-$3,500 per storm event.
Roof Issues Found Most Often
Age-Related Issues (Roofs 15+ Years): Granule loss exposing the asphalt base, shingle curling and cracking, fastener corrosion, loose shingles, and flashing that has separated or rusted.
Water Intrusion Problems: Leaks at flashing (penetrations, valleys, edges), loose or missing shingles, and ponding on low-slope sections.
Red Flags for Roof Problems
- Sagging or uneven roof line
- Missing or damaged shingles
- Granules in gutters (blackish sand)
- Discolored or algae-stained sections
- Water stains on ceilings or upper walls
- Original roof at or past typical South Florida useful life (often 15–20 years)
Roof Replacement Cost Factors
Asphalt, metal, and tile replacement quotes vary by size, pitch, tear-off, and material. Ask a licensed roofing contractor for bids on the house in front of you. We document condition and remaining useful life notes for your agent or lender; we do not bid roof work.
Electrical Problems That Create Fire Hazards in South Florida
Florida's humidity, salt air, and heat create unique electrical challenges. Combined with older wiring installations and insufficient grounding, many South Florida homes present genuine fire risks that must be remedied immediately upon discovery. These issues are often identified during 4-point inspections when a carrier or Citizens asks for the four systems.
Most Common Electrical Issues Found
Panel & Service Issues (High Priority): Corrosion in the main panel (especially coastal), undersized service (for example 60 amps where the load needs 100+), double-tapped breakers, and standing water in the enclosure.
Wiring & Insulation Issues (High Priority): Aluminum wiring oxidation on older houses, leftover knob-and-tube on pre-war stock, and exposed or damaged insulation. We photograph what is installed—not a prevalence rate.
Repair Costs for Common Issues
Outlet, panel, and rewire prices are contractor bids. We photograph the panel, wiring type, and safety defects so you can get accurate quotes—we do not publish a fixed electrical price list.
Plumbing Failures in South Florida—Signs Not to Ignore
Plumbing systems in South Florida face double jeopardy: aging infrastructure in older homes AND environmental corrosion from humidity and salt air. When combined with Florida's high water table in some areas, plumbing failures can cause catastrophic damage. Our comprehensive inspection services thoroughly evaluate plumbing systems to catch these issues early.
Most Common Plumbing Issues
Main Water Supply Issues (High Priority): Galvanized pinhole leaks on older supply, copper pinholes where water is aggressive, pressure above 80 PSI, and polybutylene (PB) still in some 1980s–1990s houses.
Drain & Vent Issues (Medium Priority): Improper slope on drain lines, corroded cast-iron drains on older houses, and missing or failed venting that lets traps empty.
Repair & Replacement Costs
Leak repair and replumb prices are contractor bids. We document pipe material, visible leaks, and water-heater age; we do not publish a fixed plumbing price list.
HVAC Failures in South Florida—Often Preventable with Maintenance
South Florida's year-round air conditioning demand means HVAC systems work constantly—often for 12-14 months per year compared to 8-10 months nationally. This intense usage, combined with salt air corrosion and humidity, creates specific failure patterns. HVAC condition is a critical component of 4-point insurance inspections.
Most Common HVAC Issues Found
Condenser Unit Issues (Outdoor Unit): Corrosion on fins and coils (especially coastal), refrigerant leaks from corroded lines, fan-motor and capacitor failures, and compressor failure at end of life. Capacitor replacement is often quoted in the low hundreds; compressor work is a contractor bid.
Air Handler & Indoor Components: Clogged filters, condensate-drain blockages, evaporator-coil corrosion or mold, and duct leaks or disconnects.
HVAC Repair & Replacement Costs
HVAC service and replacement prices are contractor bids. We document age, operation, and outdoor-unit corrosion; we do not publish a fixed HVAC price list.
Foundation Problems in South Florida: Water, Salt, and Settlement
South Florida's high water table (12-18 feet below surface in most areas), sandy soil conditions, and year-round moisture create unique foundation challenges. Unlike northern states where frost heave is a concern, South Florida foundations face subsidence, settlement, water intrusion, and salt-induced deterioration. Foundation issues are thoroughly evaluated during our comprehensive home inspections.
Most Common Foundation Issues
Slab-on-grade: Moisture at the slab edge, missing or failed vapor control, and settlement cracks are common inspection notes in South Florida. Frequency depends on grading, irrigation, and the original slab—not a single percent for every house.
Foundation Wall Issues: Horizontal cracking (indicates pressure), Vertical cracking (usually cosmetic but monitor), Bowing or leaning walls, Efflorescence deposits indicating water movement.
Foundation / Moisture Repair Costs
Most South Florida houses are slab-on-grade. Crack sealing, drainage, and waterproofing prices are contractor bids from the conditions we photograph—not a Green Foot price table.
Termites, Carpenter Ants, and Moisture Damage
Florida's warm, humid climate is a paradise for wood-destroying organisms. Every South Florida home is at risk, regardless of age or location. Unlike structural damage that develops over years, termite damage can be extensive and expensive before any visible signs appear.
Wood-Destroying Organisms in South Florida
Subterranean Termites (Most Common): Every South Florida house is in termite country. Damage is often hidden in walls and framing until mud tubes or a WDO inspection makes it visible. Treatment and wood repair are pest-company and contractor bids, not a Green Foot average.
Drywood Termites (Coastal Areas): Infest wood without soil contact, Can damage roof framing and structural wood, More expensive to treat than subterranean.
Carpenter Ants: Large ants that hollow out wood, Can weaken structural components, Usually indicate moisture problem (they need dampness).
Treatment & Prevention Costs
WDO inspections and termite treatment are separate licensed trades. We note visible wood-destroying organism evidence; treatment pricing comes from a pest control company.
Ready to Understand Your Home's Real Condition?
South Florida's unique climate demands professional inspection expertise. Properties here face challenges that inspectors in other regions never encounter. Understanding your home's specific vulnerabilities is the first step toward smart maintenance planning and protecting your investment.
Green Foot Home Inspections has inspected in Miami-Dade, Broward, and Palm Beach since 2014. We know the climate those houses face, and we photograph what is there so you can bid repairs with a contractor—not a made-up average.
Serving South Florida since 2014 | Miami-Dade County | Broward County | Palm Beach County
Frequently Asked Questions
Strategy #1: Get Your 4-Point Inspection Early
If your home is approaching the age where insurance companies require a 4-point inspection, don't wait until you have a problem. Get the inspection done when you know your systems are in decent condition. This gives you time to address any issues before they become deal-breakers.
- Contact your insurance agent and ask if your home requires a 4-point inspection
- Schedule the inspection at your earliest convenience
- Review the report and identify any recommended repairs
- Get estimates for repairs BEFORE your insurance company makes demands
- Complete repairs and submit the updated report to your insurer
Strategy #2: Document wind features before you upgrade
Order OIR-B1-1802 first so you know what is already installed. Credits come from the carrier’s table (Fla. Stat. 627.0629). We do not publish a 15–88% or payback chart. Green Foot wind inspections start at $100; 4-point + wind is $200.
Start with the form
Attic access, opening labels, and a current 1802 (Rev. 04/26 on or after April 1, 2026) matter more than a made-up ROI table.
Strategy #3: Shop Your Insurance Annually
With your 4-point and wind mitigation reports in hand, shop carriers. Each company applies its own table to the same form. We do not quote a premium dollar savings from switching.
Strategy #4: Address Problematic Features
Certain features will get you denied or charged massive premiums:
- Polybutylene Plumbing: Often requires full replacement (expensive)
- Federal Pacific or Zinsco Electrical Panels: Fire hazard—must be replaced
- Older roof coverings: Citizens publishes soft/hard age thresholds (25 / 50 years) with remaining useful life rules—private carriers set their own lists. Ask your agent what they need.
- No working HVAC: Many carriers treat cooling as required for habitability—confirm with your agent.
If your agent flags a system, get contractor bids and updated photos before the next underwriting review. Your agent submits documentation; the carrier decides.
Ready to Understand Your Home's Real Condition?
The cost of these inspections varies based on home size, location, and complexity, but here's what you can expect in Miami-Dade, Broward, and Palm Beach counties:
4-Point Inspection Pricing
Our Price: Starting at $125
Factors That Increase Cost: Larger homes, difficult attic access, multiple buildings
On-site time: Typically 60–90 minutes
Report: Same-day PDF, typically within 24 hours
What's Included: Written report with photos for your agent to submit—the carrier decides
Wind Mitigation Inspection Pricing
Our Price: Starting at $100
Factors That Increase Cost: Larger homes, multiple stories, complex features
On-site time: Typically 45–60 minutes
Report: Same-day OIR-B1-1802 PDF, typically within 24 hours
What's Included: Official form with labeled photos—your agent submits; the carrier applies credits
Combined 4-Point + Wind Mitigation
Many homeowners get both inspections done at the same time. The combined 4-point and wind mitigation package is $200 and typically takes about 90–120 minutes total in one visit. This is more efficient than scheduling them separately.
How the 1802 is used
We complete Florida's OIR-B1-1802 form documenting the features that are installed. Your agent submits it. The carrier applies credits from its own rate filing. We do not quote a premium dollar savings.
4-Point vs. Wind Mitigation: Full Comparison
Many homeowners get confused about the difference between these two inspections. Here's a clear breakdown:
Do You Need Both?
YES – Most homeowners benefit from both inspections because they serve different purposes:
- 4-Point Inspection: Documents roof, electrical, plumbing, and HVAC for underwriting. Your agent submits; the carrier decides whether systems are acceptable.
- Wind Mitigation Inspection: Completes OIR-B1-1802 so the carrier can apply credits from its own rate filing—we do not quote a premium dollar savings.
Many older South Florida homes need both on the same visit: eligibility paperwork and wind-feature documentation. Ask your agent which forms they need before you book.
How to Prepare Your Home for Inspections
Preparation Checklist for 4-Point Inspections
⚠️ What NOT to Do Before Inspection
Don't attempt cosmetic fixes or cover up problems. Inspectors are trained to look behind cosmetic work. Be honest about system age and condition—it will come out in the inspection anyway.
✓ Before Your Inspection:
- Clear Attic Access: Remove boxes, storage items from attic entrance so inspector can fully evaluate roof system
- Locate Electrical Panel: Know where it is and ensure it's accessible (not blocked by furniture/storage)
- Know Your System Age: Gather documentation of when roof, HVAC, plumbing, and electrical work was done (if available)
- Clear Under Sinks: Remove items from under bathroom/kitchen sinks so plumbing can be inspected
- Test HVAC: Ensure your AC and heating work before inspection day
- Unlock Garage/Utility Areas: Inspector needs access to all mechanical systems
- Be Home & Available: Inspector will have questions about system history and maintenance
Preparation Checklist for Wind Mitigation Inspections
✓ Before Your Wind Mitigation Inspection:
- Gather Documentation: Find records of any roof, window, or door replacements or retrofits (dates are important for discounts)
- Document Existing Features: Take note of any hurricane shutters, impact windows, roof clips, or bracing already in place
- Clear Exterior: Trim bushes/trees near doors/windows for photos and visual inspection
- Know Your Roof Type: Hip or gable? (Hip roofs score better)
- List Home Improvements: Any recent upgrades to exterior (siding, doors, windows, etc.)
- Attic Access: Inspector may need to see roof-to-wall connections in attic
What to Fix BEFORE Inspection (If Needed)
If you know you have issues, addressing them before inspection is smarter than dealing with them after:
High Priority (Address Before Inspection):
- Roof leaks or missing shingles
- Electrical hazards (exposed wiring, bad panels)
- Active plumbing leaks or water damage
- Non-functional HVAC systems
Medium Priority (Address Soon):
- Outdated electrical panels (Federal Pacific, Zinsco)
- Polybutylene plumbing (needs replacement)
- Roofs over 15-20 years old
Frequently Asked Questions
Moisture shows up often on South Florida inspections. We report readings and visible damage. Repair cost is a contractor bid, not a sitewide average.
Salt air corrodes outdoor condenser coils and can cut cooling efficiency. Condenser replacement is a contractor bid; coastal rinse-downs cost less than premature replacement. Green Foot reports condition and does not bid repairs.
A buyer inspection is not required by Florida statute. Skipping it leaves issues for after closing. A 4-point is a carrier form—Citizens requires it on applications for homes more than 20 years old. Green Foot buyer inspections start at $300.
Priority on older South Florida houses: roof condition, electrical panel, plumbing, HVAC, and moisture at the slab. Repair cost for those systems is a contractor bid and depends on the house—not a sitewide total.
For ownership: a visual roof check yearly, major systems every few years, and a full inspection when you buy or every several years. Green Foot buyer inspections start at $300. Findings inform a negotiation; they are not a guaranteed savings figure.
Galvanized supply often fails after decades of service—low pressure, rust-colored water, and pinholes are common notes on older South Florida houses. Patch repairs are temporary; full replumb scope and price come from a licensed plumber. We document what is installed.
Knob-and-tube and older aluminum branch wiring are safety concerns when still in service. Remediation options and pricing come from a licensed electrician. We photograph the panel and visible wiring type.
End-of-life signs: age 15+ years in Florida sun, heavy granule loss, curling or cracking shingles, repeated leaks, a sagging roof line, and moss or algae. Asphalt, metal, and tile replacement quotes vary by size and material—ask a licensed roofer. We document condition; we do not bid the work.
South Florida houses are mostly slab-on-grade. Moisture at slabs, windows, or HVAC condensate is common; repair scope and price depend on the house. Ask a licensed contractor for bids. We document conditions; we do not publish a sitewide repair-dollar average.
About This Guide
This guide was written by Green Foot Home Inspections, a CMI-certified company serving Miami-Dade, Broward, and Palm Beach since 2014.
Why South Florida Home Inspection is Different
Inspectors in Pennsylvania, Texas, or California face different challenges. Snow, frost heave, different humidity levels, different building practices—their expertise doesn't fully translate to South Florida's unique environment.
Green Foot inspectors live this environment. We work Florida codes, insurance forms, salt air on coastal stock, and high water tables in Miami-Dade. We report the house in front of us.
This isn't just inspection experience—it's South Florida-specific expertise.
Why Choose Green Foot Home Inspections?
Same-day and next-day inspections often available. Serving Miami-Dade, Broward, and Palm Beach counties.
About This Guide
This guide was written by Green Foot Home Inspections, a CMI-certified company serving Miami-Dade, Broward, and Palm Beach since 2014.