12 Things Home Inspectors Often Overlook

No matter if you’re a first-time homebuyer or a seasoned pro, if you plan to make an offer on a house, a home inspection always plays a big role in the process. 

A home inspector can identify costly issues and avoid wasting money before the deal is finalized, helping you make an informed decision — or negotiate the sales price.

However, there are limitations to what a home inspector can find. These are 12 of the most commonly overlooked issues.

Home inspectors typically don’t climb on the roof of the house; instead, they inspect it visually from the ground. That means they likely won’t catch issues like leaks or holes caused by raccoons or squirrels, which can be incredibly expensive to fix. 

If a damaged roof isn’t repaired quickly, water can enter the home and, if left long enough, ruin property inside the house.

You can hire a specialized roofing contractor to examine the roof to ensure it’s in good condition before making an offer on the home. On average, a roof inspection costs $216, significantly less than the typical repair or replacement cost.

The home inspector likely won’t play with the heating or air conditioning unit very much out of worries about being liable for any damage to it. 

They’ll typically run it briefly to ensure it works, but they don’t evaluate the system’s efficacy or if it’s at risk of breaking; they only do a visual inspection. If you buy the home, you may find that the system breaks soon after you move in due to a lack of maintenance.

An HVAC specialist can examine the unit and tell you what maintenance it needs — or whether it needs to be replaced. An HVAC inspection costs $300, on average. 

Considering that a new air conditioning system can cost over $5,000 on average, it’s well worth the added expense, especially if you’re buying a second home or investing in a rental property.

If you’ve never dealt with septic tanks before, you may not realize how much maintenance they require — or how horrible it can be if the septic system breaks. 

Your general home inspector will perform a visual inspection, flush all of the home’s toilets, run the water, and check the tank’s drain field to make sure there’s no standing water. But that’s as far as the inspection goes.

If you’re looking at a home with a septic tank, it’s wise to request an inspection and assessment of the tank from a state-licensed septic tank plumber or contractor. The evaluator will look for cracks, leaks, and other defects, as well as drainage issues and the condition of the pump and alarms.

A septic tank inspection costs between $250 and $500. Considering that a new septic tank costs, on average, $6,677, it’s a smart investment.

When a home inspector examines a home, they check some (but not all) appliances. They ensure that the refrigerator, washer, dryer, dishwasher, and stove all work, but they only look for major issues, like not turning on, smoke, or leaks. As you tour the home, you can ask to try out each appliance yourself to see if they work.

If you’re planning on replacing the appliances anyway, defective appliances may not be a dealbreaker, but it’s a good idea to know ahead of time so you can budget for new appliances. 

The average cost of new appliances — including a refrigerator, range, washing machine and dryer — is $10,875.

A home inspector will turn on the pool’s pump or heater to make sure they work. However, they don’t evaluate any cracks or dings in the pool, nor can they tell how if there are underlying issues with the pump.

A professional pool inspector can run pressure tests for plumbing leaks, evaluate the existing pumps and heaters, and look for potential issues. 

On average, a new pool pump costs $1,100, while pool resurfacing costs $6,500, so an inspection can be a good investment.

Lead-based paints used to be common in homes, but they were banned for residential use in 1978 as children could become poisoned from inhaling flakes and dust from the paint.

Sellers are required to tell you if the home has lead paint, but they are not required to test for it; if they don’t know, they don’t have to test it before selling.

A visual inspection from a home inspector won’t tell you if the paint is lead-based or not. However, sellers are required to include a 10-day period in the contract to give you time to test for lead. 

You’ll need to hire a certified inspection or risk assessment firm to inspect the home. On average, a lead paint inspection costs $317.

If lead paint is used throughout the home, it can cost $15,000 to $25,000 to remove it. Because lead paint must be disclosed to prospective buyers, it can affect the home's resale ability.

Home inspectors will examine drains in the home and run water through them to ensure they work correctly. However, they usually only run the water for five to 10 minutes — not enough time for major problems to be revealed. 

Damage or obstruction to the sewer line can cost $5,000 to $10,000 to repair, so it’s smart to get a specialist out to evaluate the drains.

If the house isn’t graded properly, water will pool around it rather than away from it. Over time, this can cause leaks in the basement or crawl spaces and mold. 

But if it’s in the middle of the dry season, there may be no sign of water or leaks, and the inspector may overlook grading issues.

Talk to your realtor about the location and if they see issues in similar homes. In some cases, it may be worth bringing in an expert to evaluate water levels in the soil around the home.

Home inspectors will check the floors for obvious signs of wear, tear, and damage. They will look for swelling or sloping that may indicate water damage or incorrect installation. However, they don’t usually evaluate the padding underneath the floor or squeakiness.

After moving in, you may find that the padding is paper-thin or nonexistent, so you hear every step above you. Before you buy, make sure you listen to people walking upstairs and throughout the home to make sure you can live with the noise.

A home inspection will tell you whether the chimney has obvious damage. However, it’s solely a visual inspection. If you’re buying a home with a chimney — especially if it’s older — getting an actual chimney inspection from a specialist can be a wise investment.

A chimney specialist will inspect external and internal sections of the chimney and fireplace to evaluate their condition.

Unfortunately, internal leaks are easy to miss. The home inspector can only report what they see during their evaluation; if the home has been unused and the water hasn’t been running, there may be no obvious signs of leaks. 

When buying a home, it can be a good idea to get a plumbing inspection done to catch any major issues with the plumbing or pipes.

Home inspectors will look for mold or mildew during their evaluation, but not all issues are visually obvious. 

If a home is in a humid climate, has a history of water damage, or is an older home, consider having mold testing done with a moisture meter and humidity gauge. Mold removal can cost as much as $6,000, so it’s important to catch it early.

It’s easy to get caught up in the idea of a dream home. In a hot housing market, it can be tempting to waive the inspection contingency, but that can be a costly mistake. 

If possible, ensure a home inspection is part of your contract. If you have concerns about specific details of the home, like its HVAC or septic systems, also request to have specialists come in to examine those issues. 

Spending a little more upfront can be a smart homeowner money move, saving you thousands in unexpected repairs later on.