Introduction
A home inspection is one of the most important steps in buying a home, and also one of the most misunderstood. Many first-time buyers think of it as a formality, a box to check before closing. Others treat it as a warranty, as if a home that passes inspection is guaranteed to be problem-free.
Neither framing is accurate. A home inspection is a professional visual assessment of a home's condition at a specific point in time. Done well, it gives you a detailed picture of what you're buying, surfaces issues that need attention, and informs your negotiating position after you're under contract. It doesn't catch everything, but it catches a lot, and what it reveals can meaningfully change what you pay or whether you proceed at all.
This article explains exactly what a home inspector does, what their report covers, what their limitations are, and how to get the most value from the process.
What a Home Inspector Is (and Isn't)
A home inspector is a trained professional who conducts a visual assessment of a home's accessible systems and components. Most states require home inspectors to be licensed, though requirements vary significantly. Professional organizations like the American Society of Home Inspectors (ASHI) and the International Association of Certified Home Inspectors (InterNACHI) set standards that members follow.
What a home inspector is not: an engineer, a contractor, or a specialist. They're generalists who assess a wide range of systems and components. When they find something concerning, they note it and often recommend evaluation by a specialist, such as a structural engineer for foundation issues or an electrician for electrical concerns. The inspection is a triage process that identifies what needs expert follow-up, not a definitive diagnosis of every issue.
What a Home Inspection Covers
A standard home inspection follows a defined scope that varies slightly by inspector and professional organization standards. Here's what's typically covered:
Roof
Condition of roofing materials (shingles, tiles, metal), flashing around chimneys and penetrations, gutters and downspouts, and visible signs of damage or wear. Note: inspectors typically walk the roof if safe to do so, but in some cases, assess from the ground or from the eave level with binoculars. Roof inspections have inherent limitations based on what's accessible and visible.
Exterior
Siding condition, exterior doors and windows, grading and drainage around the foundation, driveways and walkways, decks and porches, and visible foundation from the exterior.
Foundation and Structure
Visible foundation walls (interior and exterior), structural elements visible in the basement or crawl space (beams, joists, posts), and signs of settlement or movement. Inspectors assess what's visible; hidden structural conditions require specialist evaluation.
Basement and Crawl Space
Visible evidence of water intrusion or past flooding, insulation, ventilation, structural elements, sump pump condition, or any visible pest damage.
Attic
Insulation type and coverage, ventilation, visible roof structure from the interior, signs of water intrusion, mold, or pest activity. Access may be limited by hatch size or storage.
Electrical System
Main electrical panel (condition, capacity, labeling, safety concerns), visible wiring, outlets and switches (tested for proper function), GFCI protection in appropriate locations (bathrooms, kitchen, exterior, garage), and smoke and carbon monoxide detector locations. Inspectors do not open walls to assess hidden wiring.
Plumbing
Visible supply and drain pipes, water pressure and flow at fixtures, water heater condition and age, evidence of leaks or past leaks, and visible pipe materials. Inspectors do not inspect inside walls or underground. Sewer line condition requires a separate specialist inspection (sewer scope).
HVAC Systems
Heating and cooling equipment condition, age, and operation (tested during the inspection season if conditions allow), visible ductwork, filters, and thermostat function. Inspectors run the systems but can't predict when a unit will fail.
Insulation and Ventilation
Insulation in accessible areas (attic, crawl space), ventilation of attic and crawl space, bathroom exhaust fans and kitchen ventilation.
Interior
Walls, ceilings, and floors (condition, visible cracks, water stains), doors and windows (operation, condition, seals), stairs and railings, built-in appliances (tested for basic operation), and fireplace visible condition (flue requires separate chimney inspection).
What a Home Inspection Does Not Cover
Understanding the limitations of a standard inspection is just as important as understanding what it covers. A standard inspection does not include:
- Sewer line condition: The main sewer line from the house to the street is underground and requires a separate sewer scope inspection (a camera fed through the line). This is strongly recommended for homes more than 20 to 30 years old.
- Chimney interior: The interior of a chimney flue requires a separate chimney inspection. Inspectors assess what's visible but can't see inside the flue.
- Radon: Radon is a naturally occurring radioactive gas and a leading cause of lung cancer. Testing requires a separate radon test, typically conducted over 48 to 96 hours.
- Mold testing: Inspectors note visible mold and conditions conducive to mold growth, but comprehensive mold testing (air sampling, swab testing) requires a separate specialist.
- Pest or termite inspection: In most states, wood-destroying organism (WDO) inspections are performed by licensed pest inspectors, not general home inspectors.
- Well and septic systems: These require specialized inspections by qualified professionals.
- Underground or concealed conditions: Inspectors assess what's visible and accessible. Problems behind walls, under concrete, or underground are outside the scope of a standard inspection.
- Pool and spa: Some inspectors offer this as an add-on; many don't. Confirm upfront if the property has a pool.
- Environmental hazards: Lead paint testing, asbestos testing, and other environmental assessments are specialist services.
How to Choose a Good Inspector
Get Referrals from Trusted Sources
Your buyer's agent should have relationships with inspectors they've observed in action. A homebuying coach with local knowledge is another good source. If you're getting referrals from the listing agent or the seller, be more cautious. They have an incentive to recommend inspectors who won't find problems or who don't report them aggressively.
Verify Credentials
Check that your inspector is licensed in your state (where required) and whether they hold certifications from ASHI, InterNACHI, or other professional organizations. These organizations require ongoing education and adherence to standards of practice.
Ask About Their Report Format
A good inspection report should be clear, detailed, and include photos. Some inspectors produce reports during the inspection itself using tablet-based software; others compile them afterward. Ask to see a sample report so you know what you're getting.
Ask About Their Experience with Similar Properties
An inspector who primarily works on new construction may be less familiar with the specific issues common in 1950s homes in your area. Ask whether they have experience with the age and type of home you're buying.
Attend the Inspection
Always attend your inspection if at all possible. A good inspector will walk you through what they're finding in real time, explain the significance of issues they observe, and answer your questions on the spot. This gives you far more context than reading the report later. Block off two to four hours for a typical single-family home inspection.
How to Read an Inspection Report
Inspection reports can be long, often fifty to one hundred pages, is not unusual for a detailed report, and first-time buyers often aren't sure how to interpret them. A few principles help.
Not everything in the report is equally significant. Most reports use a rating system (Safety Concern, Major Defect, Minor Defect, Maintenance Item, Informational) to help you prioritize. Focus first on safety concerns and major defects, which represent issues that could affect your health, the home's habitability, or involve significant repair costs.
Maintenance items and minor defects are normal for any lived-in home. The goal of an inspection isn't to find a perfect home; it's to understand what you're buying and identify anything that could affect your decision or your offer terms.
Work through the report with your agent and, if needed, your homebuying coach. Their experience reading reports and understanding what's typical for homes of that age and type in that area helps you distinguish between findings that are genuinely concerning and ones that are standard for an older home.
What Happens After the Inspection
The inspection report informs your next step: deciding whether to proceed, negotiate for repairs or credits, or walk away.
Most buyers request some combination of repairs and credits after receiving an inspection report. The scope of what to request is a negotiation; you're not entitled to a perfect home, and asking for every minor item risks offending the seller and derailing an otherwise good transaction. Focus on safety issues, major systems concerns, and items that significantly affect habitability or value.
Your agent will help you draft an inspection response. Your coach can help you think through what genuinely matters versus what's standard and expected. Together, they help you make decisions that protect your interests without being unreasonable.
Final Thoughts
A home inspection is not a formality and not a guarantee. It's a professional assessment that gives you the most accurate picture you can get of a home's condition before you close. Treat it seriously, attend it in person, read the report carefully, and use what you learn to make informed decisions.
The few hundred dollars an inspection costs is among the best money you'll spend in the entire homebuying process. The information it provides can save you from costly surprises, strengthen your negotiating position, and give you the confidence to move forward knowing exactly what you're buying.
Sources & Further Reading
For authoritative information on the topics covered in this article, consult these resources:
