What's the worst thing a home inspector can find?

Asked by: Kiley Beahan  |  Last update: May 18, 2026
Score: 4.9/5 (25 votes)

The worst things a home inspector can find are critical issues like severe foundation damage, extensive mold or termites, unsafe electrical panels (Federal Pacific, Zinsco), major structural failure (e.g., collapsing decks, roof issues), or hidden environmental hazards (asbestos, buried tanks), as these pose significant safety risks, threaten structural integrity, and can cost tens of thousands to remedy, often ending a potential home purchase.

What is the biggest red flag in a home inspection?

The biggest home inspection red flags involve structural integrity (large foundation cracks, uneven floors, sticking doors/windows), major system failures (old/unsafe wiring, old plumbing, leaky roof with water damage/mold), and severe pest infestations (termites, extensive rodent damage), as these signal costly, safety-compromising issues requiring immediate professional attention, often from specialists like structural engineers.
 

What are the most common problems found in home inspections?

Most Common Home Inspection Findings

  • Roof. Over 19 percent of home inspections uncover roofing issues. ...
  • Electrical wiring. Approximately 51,000 fires start each year in the home due to improper wiring. ...
  • Insulation and ventilation. ...
  • Plumbing. ...
  • Grading and drainage. ...
  • Mold. ...
  • Foundation. ...
  • Roof.

What would make a house fail a home inspection?

A house fails a home inspection due to major safety, structural, or system issues like foundation cracks, roof leaks, faulty electrical wiring, major plumbing problems, or extensive mold/pest damage, which pose significant risks or incur huge repair costs, often violating building codes. Common "fails" are severe drainage issues, bad HVAC, rotting wood, asbestos, radon levels, or outdated systems, signaling potential hazards and big expenses for buyers.
 

What is the riskiest part of a home inspection?

The riskiest parts of a home inspection involve structural integrity, hidden water damage, electrical hazards, and toxic materials like asbestos or radon, as these present significant safety concerns, potential for severe injury (falls in crawlspaces/roofs), and extremely costly repairs, often requiring specialized professional assessment beyond the general inspector's scope, such as foundation issues, faulty wiring, or extensive mold from drainage problems. 

Why some Mike ‘Holmes Approved Homes’ are now being demolished

28 related questions found

What do home inspectors not look for?

A regular home inspection doesn't cover hidden issues behind walls, environmental hazards (like asbestos, mold, radon, lead paint), pest infestations, septic/well systems, pools/spas, or cosmetic flaws, focusing instead on accessible, visible components for functionality and safety; these require separate, specialized inspections. 

What is the first thing an inspector wants to see?

In most inspections, especially for businesses, the inspector first wants to see your records and paperwork, such as licenses, permits, compliance logs, and safety training documents, to establish a baseline understanding of operations. For a home inspection, they often start with the exterior (roof, foundation) to assess major structural and safety elements before moving inside. 

How clean does my house need to be for an inspection?

To clean for an inspection, focus on removing clutter, opening access to all major systems, and preparing kitchens, bathrooms, and outdoor areas so the inspector can clearly see the condition of the home. This helps prevent missed problems and reduces last-minute surprises during the inspection report.

What causes a house to not pass an inspection?

Top reasons homes fail inspection

Foundation flaws such as cracks, troublesome tree roots and uneven settling or lack of steel reinforcement. An aging, damaged or deteriorating roof. Missing flashing or shingles. Damaged siding.

How often do home inspectors get sued?

Home Inspectors typically get sued once every five years and can expect to get sued twice on average in their careers. It is a litigious field. I have been a Licensed New Jersey Home Inspector for 19 years.

What to watch out for during a home inspection?

What are the most common problems found in a home inspection? Common things a home inspector finds include roofing issues, problems with the HVAC system, faulty electrical wiring, dry rot, mold, and structural damage.

Should I worry about a home inspection?

A home inspection can detect safety issues like radon, carbon monoxide, and mold, which all homes should be tested for. 2 Make sure that your home-buying contract states that should such hazards be detected, you have the option to cancel the offer to buy.

What would fail an inspection?

Common reasons for a failed vehicle inspection include: An active check engine light. Broken headlights and taillights. A faulty gas cap.

When to walk away after a home inspection?

You should walk away after a home inspection when significant, costly issues like major structural damage (foundation, roof), serious safety hazards (mold, asbestos, faulty wiring, gas leaks), or extensive system failures (sewer lines) are found, especially if the seller won't negotiate repairs, credits, or price, or if the repairs exceed your budget and comfort level. It's about balancing major expenses against your financial well-being, safety, and future goals. 

What are the five red flags?

Five common relationship red flags include controlling behavior, poor or dishonest communication, lack of respect for boundaries, emotional unavailability/neglect, and extreme jealousy or possessiveness, all signaling potential toxicity and unhealthy dynamics. Other significant warnings involve gaslighting, inconsistent actions (words don't match deeds), and constant criticism, indicating deeper issues with trust and empathy.
 

How to tell if a home inspector is good?

Some state organizations, such as the California Real Estate Inspection Association, also have a database of inspectors. Go to each group's website to find details about the experience and professional certifications of local inspectors and the services they provide.

What will make you fail a home inspection?

Home inspections fail due to major safety, structural, or functional issues, primarily concerning the roof (leaks, damage), foundation (cracks, settling), electrical hazards (outdated wiring, code violations), plumbing problems (leaks, low pressure, sewer line issues), and HVAC system malfunctions, plus signs of mold, pests (termites), and environmental hazards like asbestos or radon. While minor cosmetic flaws don't cause a failure, serious defects in these core systems can halt a sale, requiring negotiations or repairs. 

What is the most common reason a property fails to sell?

The most common reason a property fails to sell is overpricing, as it deters buyers, leads to poor market comparison, and causes issues with financing and appraisals, making the home linger on the market and appear undesirable. Other major factors include poor condition (needing repairs), bad staging/curb appeal, amateur photography, ineffective marketing, or an undesirable location. 

What will fail a home insurance inspection?

A home insurance inspection will fail a property due to significant safety hazards, poor maintenance, and structural issues, like an old roof, outdated wiring (e.g., knob-and-tube), foundation cracks, extensive water damage/mold, hazardous materials (asbestos), or unaddressed risks like overhanging dead trees or large pools/trampolines without proper safety measures. Issues often lead to a "fail," but typically result in a requirement for repairs within a set timeframe rather than outright denial, though severe neglect can cause policy cancellation or non-renewal.
 

What is the 80/20 rule house cleaning?

The 80/20 rule for cleaning (Pareto Principle) means 80% of your home's perceived cleanliness comes from just 20% of the cleaning effort, focusing on high-impact areas like kitchen counters, sinks, and main floors. By tackling these vital spots first (e.g., quick wipe-downs, tidying surfaces, making beds), you create the biggest visual impact quickly, reducing overwhelm and achieving a clean look with less time, saving the deeper, less frequent tasks for later.
 

Do home inspectors care if your house is messy?

Although the cleanliness of your home has no impact on the inspection, a dirty or messy home may prevent the inspector to access areas of the home.

How to prep your house for an inspection?

Preparing for a home inspection: A do-it-yourself checklist for sellers

  1. Clean and declutter inspection access points. Clean furnace filter. ...
  2. Test functionality of the items a home inspector will check. ...
  3. Take basic safety and security precautions. ...
  4. Make necessary repairs to the property. ...
  5. Complete exterior home improvements.

What are red flags during inspection?

Unsightly brown circles on the ceiling or trickling brown lines down a wall could be a big money pit red flag. If you find water stains during your home inspection, this might be a sign of a major roof leak, which can be very costly to repair.

What's the most common home inspection issue?

The most common home inspection issues often revolve around roofing problems, electrical deficiencies, and improper grading/drainage, all leading to potential water intrusion or safety hazards, with other frequent finds including plumbing issues, HVAC problems, and structural concerns like foundation cracks. Roofing issues like worn shingles, leaks, and flashing problems are consistently top concerns, as are outdated or unsafe wiring and poor yard drainage that directs water toward the foundation.
 

What are the 4 points of inspection?

What is a 4-point inspection? The short answer is that it's a thorough examination of a house's condition that focuses on four major components: Electrical, plumbing, roofing, and the heating, ventilation and air-conditioning system.