What a Home Inspection Does Not Tell You

The report came back and the summary said the major systems were functional. That is a real piece of information and it is worth what you paid for it. It is also a verdict about one Tuesday afternoon.

A home inspection answers a narrow question extremely well: is anything visibly wrong right now, in the parts of the house a person can reach without taking anything apart. What it is not built to answer, and in most cases is explicitly not required to answer, is the question that governs your next five years of spending. How old is all of this, and how much service life is left in it.

A furnace can be nineteen years old, well maintained, running quietly, and completely correct to describe as functional. That is one sentence containing good news and a bill.

None of this is a criticism of inspectors. It is a description of the job, and knowing the shape of the job is what lets you fill in the parts it was never going to cover.

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An inspection is a snapshot, not a forecast

The standards of practice most inspectors work under, whether through state licensing or a trade association, describe a visual, non-invasive examination of readily accessible systems and components. Every one of those words is doing work.

Visual. The inspector reports what can be seen. Not what is inside a wall, under a slab, above a finished basement ceiling, or buried in the yard.

Non-invasive. Inspectors generally do not dismantle equipment, remove panels that are not made to come off, cut into finishes, or take a system apart to look at its internals. A hairline crack in a heat exchanger, in a spot that requires disassembly to see, is not going to be found this way.

Readily accessible. If the crawlspace hatch is behind a bolted shelving unit, the attic access is painted shut, or there is a storage rack in front of the electrical panel, that area often gets noted as inaccessible rather than inspected. Those notes are easy to skim past and they are frequently the most important lines in the document.

And most standards state that the inspector is not required to predict future condition or remaining service life. That is not a loophole. It is an honest boundary. Nobody can look at a running compressor and tell you whether it has two years left or nine.

The question	Does the inspection answer it?
Is anything visibly broken or unsafe today?	Yes. This is the whole point
Is anything visibly installed wrong?	Usually
Are there active leaks, stains, or damage?	Yes, where visible
How old is each major system?	Sometimes noted, often estimated, rarely guaranteed
How many years are left in the furnace?	No
What will this house cost me over five years?	No
Is the sewer lateral cracked or root-filled?	Not without a separate camera scope
Is there a problem inside a wall or under the slab?	No

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The phrases that get misread

Inspection reports use careful language, and the care is the point. A few of them mean much less than buyers assume.

"Functional at the time of inspection." It worked on the day. That is the entire claim, and it is a true one.

"Appeared serviceable." Nothing visible looked wrong. Note the word appeared.

"At or near the end of its typical service life." This is the closest thing to a forecast you will get, and when it appears you should treat it as a significant finding rather than a footnote. It usually means the inspector read a date off a data plate and did arithmetic. You can do the same arithmetic on every other system in the house.

"Recommend further evaluation by a licensed contractor." This is not a formality. It means the inspector found something outside their scope to judge and is handing it off. Every one of these is a decision you still have to make, and the number of them in a report is a better summary of the house than the number of pages.

"Not inspected" or "inaccessible." Nobody looked. Read the list of these before you read anything else.

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What sits outside the scope almost everywhere

Scopes vary by state and by inspector, so read your own agreement. That said, the following are commonly excluded from a general home inspection, and each of them has its own specialist.

Commonly excluded	Who handles it	When it is worth ordering
Sewer lateral condition	Camera scope by a plumber	Older neighborhoods, mature trees near the line
Chimney flue interior	Chimney sweep or certified inspector	Any house with a wood-burning fireplace in use
Septic system	Septic contractor, sometimes county-required	Any house not on municipal sewer
Well flow rate and water quality	Well contractor plus a lab test	Any private well
Wood destroying insects	Separate report, required by some lenders	Warm and humid regions, any wood-to-soil contact
Radon	Separate test kit or continuous monitor	Regionally dependent, ask locally
Mold, asbestos, lead	Environmental testing firm	Older homes, or where the report notes suspect materials
Pools and spas	Pool contractor, sometimes an inspection add-on	Always, if there is one
Structural questions	Licensed structural engineer	Whenever the report says the word structural
Code compliance	Nobody, generally	An inspection is not a code inspection

That last row surprises people. A general home inspection is not a code compliance review, and a house built to the code of its era is not required to meet current code. Older wiring, older stair geometry, and missing modern safety devices are extremely common in houses that pass an inspection without incident.

Pricing on these varies enormously by region, so it is not worth quoting a number here. Ask locally. The general rule is that the specialist inspections cost a small fraction of the problems they exist to find.

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The systems that got a pass because of the calendar

There is a whole category of things that go uninspected for reasons having nothing to do with the house.

Air conditioning in cold weather. Many inspectors will not run a central air conditioner when the outdoor temperature is below roughly 60 degrees, because on some systems doing so risks damaging the compressor. If you closed in February, your AC may have been looked at and not operated. The same logic runs the other way for heating in a hot month, though less often.

Anything shut off. Most standards do not require an inspector to turn on a system that was off, and turning on gas or water valves in a vacant house is not their call to make. A pilot that is out, a water supply that is shut at the street, a breaker that is off: all of these commonly result in a system that goes unevaluated.

Seasonal equipment. Irrigation systems, pool heaters, humidifiers, and evaporative coolers are frequently winterized and untestable.

Detached structures. Sheds, detached garages, and outbuildings are often outside the scope entirely.

None of these are failures. They are just holes, and the fix is to know where the holes are so you can either close them before closing or budget for them after.

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The age question the report was never going to answer

This is the gap that matters most, and closing it costs about forty minutes and no money.

Walk the house and photograph the data plate on every major system: furnace, condenser, water heater, panel, sump pump, softener, and every appliance. Most manufacturers encode the build date into the serial number and most will publish the format. Age is the single number that predicts more about your next five years than anything in the inspection report.

The full version of this walk, with what to photograph and what to do with it, is in the first thirty days after closing. For what the ages mean once you have them: water heaters, HVAC by system type, and appliances ranked by service life.

The inspection tells you the condition. The data plates tell you the position on the curve. You need both, and only one of them came with the report.

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Three things worth doing alongside the inspection

Attend it. The written report is constrained by liability and by scope. The conversation is not. An inspector standing in front of a twenty-year-old furnace will usually tell you plainly what they think, even when the report is going to say functional. Ask directly: how old is this, and what would you be planning for if you lived here.

Ask the seller for records, in writing, before closing. Replacement dates, contractor names, remaining manufacturer warranties, and whether anything was permitted. Sellers answer this in week one of the deal and go quiet by month three.

Read the "not inspected" list first. Then decide, deliberately, which of those holes you are paying a specialist to close and which you are accepting. Accepting them is a legitimate choice. Accepting them without noticing is not.

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Where this touches coverage, stated plainly

One consequence of an inspection report is worth understanding before you shop for a home service contract, because it works in a direction most people do not expect.

An inspection finding is documentation of a pre-existing condition. Every legitimate home service contract excludes pre-existing conditions, meaning anything already failing or already defective when the contract was purchased. If your report says the water heater is weeping at a fitting, or the AC is not cooling to spec, or the disposal is seized, no contract you buy afterward is going to pay for that item. The report is dated, it is in your file, and administrators do verify.

There is also a waiting period on every legitimate contract, commonly around 30 days, before coverage becomes active. It exists for the same reason: to stop people from buying on Monday for a failure that started on Sunday.

So the ordering runs opposite to intuition. Coverage does nothing for the items the inspection flagged. It is a tool for the items that got a clean report and happen to be old, which in most houses is the larger and quieter category.

And it is genuinely a choice. If your inventory comes back with everything under ten years old, self-insuring is a perfectly sensible decision and you should not be talked out of it. If it comes back with a furnace at nineteen, an AC at sixteen, a water heater at eleven, and all of them working, that is a different question, and it is one about your cash flow rather than about the house.

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The short version

An inspection is a competent answer to "is anything wrong today." It is not, and does not claim to be, an answer to "what does this house cost." The second question is the one you live with, and you close the gap yourself with a phone camera, a list of serial numbers, and the willingness to read the section of the report that says nobody looked.

If your walk turns up several systems well into their expected service life with nothing currently wrong, that is the specific moment a quote is worth thirty seconds.