Missouri Home Inspection Checklist: 17 Issues That Can Cost You Thousands If You Skip an Inspection

Buying a home in Missouri without a professional inspection can lead to unexpected repair bills ranging from $10,000 to $40,000. Many of these costly problems hide beneath the surface, invisible during a quick walk-through. This checklist highlights some of the most common issues found in Missouri homes and explains why skipping an inspection could be a costly mistake.

Damaged roof with missing shingles and flashing issues

Hidden Roof Leaks

Roof leaks often start with improper flashing, missing shingles, or hail damage. These leaks can cause water damage inside walls and ceilings, leading to mold growth and structural decay. A professional inspection uses moisture meters and visual checks to detect leaks that are not visible to the naked eye. Repairing roof leaks can cost anywhere from $1,000 to $10,000 depending on the extent of damage.

Foundation Movement

Cracks, bowing walls, and settling indicate foundation movement, which can compromise the entire structure of a home. Left unchecked, foundation problems can lead to uneven floors and costly structural repairs. Inspectors look for visible cracks, measure wall bowing, and check for uneven floors to identify foundation issues early. Foundation repairs typically range from $5,000 to $25,000 or more.

Sewer Line Failure

Missouri homes often face sewer line problems caused by tree roots invading pipes or collapsed sections underground. Sewer failure can cause backups, foul odors, and health hazards. Inspectors use specialized cameras to examine sewer lines and detect blockages or breaks. Repairing or replacing sewer lines can cost between $3,000 and $15,000 depending on the damage and access.

Sewer inspection camera checking underground pipes

Radon Gas

Missouri ranks as a high radon risk state, and radon exposure increases the risk of lung cancer. Radon is a colorless, odorless gas that can seep into homes through cracks in the foundation. Inspectors perform radon testing using specialized detectors to measure radon levels before purchase. Installing a radon mitigation system can cost between $800 and $2,500.

Electrical Fire Hazards

Electrical issues like double taps, aluminum wiring, and overloaded panels increase the risk of fire. Faulty wiring can cause sparks or overheating, threatening the safety of the home and its occupants. Inspectors examine electrical panels, outlets, and wiring for signs of hazards. Electrical repairs vary widely but can cost $1,000 to $10,000 depending on the extent of rewiring needed.

HVAC Failure

Undersized HVAC systems or cracked heat exchangers reduce heating and cooling efficiency and can pose safety risks like carbon monoxide leaks. HVAC failure can lead to uncomfortable living conditions and expensive emergency repairs. Inspectors test system performance and visually check components for damage. Replacing or repairing HVAC systems typically costs $3,000 to $8,000.

Mold and Moisture Intrusion

Mold thrives in damp environments and can cause health problems and structural damage. Moisture intrusion often results from leaks, poor ventilation, or flooding. Inspectors use moisture meters and look for visible signs of mold or water stains to identify problem areas. Mold remediation and repairs can cost $500 to $6,000 depending on severity.

Improper Deck and Porch Construction

Decks and porches built without proper support or fasteners can collapse, causing injury and property damage. Inspectors check for secure attachments, proper materials, and signs of rot or insect damage. Repairing or rebuilding decks can cost $1,000 to $15,000 depending on size and complexity.

Wooden deck showing rot and loose nails

Drainage and Flooding Risks

Poor drainage around a home can cause water to pool near the foundation, leading to flooding and foundation damage. Inspectors assess grading, gutters, and drainage systems to identify risks. Fixing drainage issues may involve landscaping, gutter replacement, or installing French drains, costing $1,000 to $10,000.

Termite and Wood-Destroying Insects

Termites and other wood-destroying insects silently damage wooden structures, weakening the home’s framework. Missouri’s climate supports termite activity, making inspections critical. Inspectors look for mud tubes, damaged wood, and insect presence. Treatment and repairs can cost $500 to $5,000 or more depending on infestation size.

Skipping a home inspection in Missouri can expose you to hidden problems that cost thousands to fix. From roof leaks to radon gas, these issues often go unnoticed without a thorough professional check. Protect your investment by scheduling a detailed inspection before buying. It’s the best way to avoid surprises and negotiate repairs or price adjustments.

Home inspector checking exterior of a Missouri house