Should I get a sewer scope when buying a house?

Yes. A sewer scope is one of three things you genuinely cannot find by looking at a house, and I ask for all three on anything I would buy myself.

The other two are radon and meth residue. None of them are visible, none are smellable, and none show up in a standard home inspection unless you ask for them specifically.

I do not ask because I expect something to be wrong. I ask because there is no version of walking through a house where you would notice.

What a sewer scope actually is

A camera on a flexible cable goes down the sewer lateral — the line running from the house to the city main or to the septic tank — while someone watches a screen.

What it shows:

The pipe material. Clay, cast iron, Orangeburg, ABS or PVC. On an older house this alone is worth the fee, because material tells you a great deal about remaining life.

Root intrusion. Tree roots find joints in clay pipe. Decades of a mature tree near the line is the most common finding on an older property.

Breaks, cracks and offsets. Where sections have separated or shifted.

Bellies. A sag where the line has lost its slope, so waste collects rather than draining. These do not clear themselves and they are a repair rather than a cleaning.

Blockages and prior repairs, including patches somebody did without mentioning it.

Why the standard inspection does not cover it

A home inspector tests the fixtures. They run water, flush toilets and confirm things drain.

A line can drain acceptably on a short test and still be full of roots, bellied, or cracked. The test measures today’s flow with one household’s worth of water. It does not look at the pipe.

That is the gap, and it is why the scope is usually a separate specialist and a separate fee.

When it matters most

Older houses. Clay and cast iron were standard for decades, and both have finite lives. A house from the fifties, sixties or seventies is squarely in scope territory.

Mature trees near the line. The thing people love about established neighborhoods is also what finds the pipe joints.

Any house where you do not know the line’s history. Which is most houses.

Before a remodel. Opening a basement floor after you have finished it is substantially worse than before.

On genuinely new construction the case is weaker, though not zero — construction debris and improperly bedded pipe both happen. And whether you can buy a car before closing is the other thing to get right in this period, for different reasons.

The other two invisible tests

Radon. This one has a real number attached. Utah’s Department of Environmental Quality reports that one in three Utah homes tests above the EPA action level of four picocuries per liter, and that the average Utah home comes in around 5.3. The EPA describes indoor radon as the leading cause of lung cancer in people who have never smoked.

That is not a scare statistic, it is a reason to spend very little money on a test. Radon in Utah homes covers testing and what mitigation involves, and mitigation is inexpensive relative to the risk.

Meth residue. Uncommon and unpleasant to think about, and the reason to test is the same as the others: there is no way to see it. A property with a history is not always a property with a disclosed history. The test is cheap and the remediation is not.

Three tests, none visible, all cheap relative to what they find.

What a scope costs against what it saves

I am not quoting a price — scope fees vary by provider and access, and a figure here would rot.

The shape: a scope is a small fraction of a sewer line replacement, and line replacement means excavation, which means the driveway or the yard or the basement floor. It is one of the few repairs where the access costs more than the part.

Ask your inspector whether they scope or whether they refer out, and book it at the same time as the inspection so it lands inside your due diligence period.

What to do if it finds something

Findings are common and most are not deal-ending.

Roots may be cleanable, or may mean the joints are already compromised. Ask the scope technician which.

A belly is a repair. Get a quote during due diligence rather than negotiating blind.

Orangeburg pipe is worth taking seriously — it is a material with a known failure pattern and a replacement conversation rather than a repair one.

Then negotiate with the quote in hand. Whether you have to fix everything on the inspection report covers how that works in Utah, and the useful point is that almost nothing is mandatory — it is a negotiation, and a specific quote is far stronger than a general concern.

Who pays, and when to ask

The buyer pays for these in almost every case, and that is normal — they are your due diligence, commissioned by you, reported to you.

The timing is the part worth planning. All three want to happen early in the due diligence period, not at the end of it, for one reason: if something turns up, you need time left to get a quote and negotiate. A scope booked on the last day of due diligence gives you a finding and no room to act on it.

So the order is: go under contract, book the inspection immediately, and ask at the same time for the scope, the radon test and anything else specific to that house. One phone call, three bookings, all inside the window with time to spare.

What due diligence means in a Utah real estate contract covers what the period actually gives you and what happens when it ends, which is the deadline all of this runs against.

What I actually see

Buyers who skip the scope on an older house because the inspection came back fine.

The inspection being fine is not evidence about the pipe. It is evidence that water went down the drain on a Tuesday. Those are different claims, and the gap between them is a few hundred feet of pipe nobody looked at.

The other pattern is skipping it on a house with beautiful mature trees, which is precisely the house that most needs it. The trees are the reason the neighborhood is lovely and the reason the line has roots in it.

What to do next

Book the scope, the radon test and the inspection together so everything lands inside your due diligence window. On an older house, ask about the pipe material specifically — it is the single most useful sentence in the report.

What happens during a home inspection in Utah covers what the main inspection does and does not include.

I am Kelsey Earl, a Realtor with Keller Williams South Valley, and I ask for all three of these tests rather than waiting to be asked. Tell me what you are under contract on and I will tell you which specialists to book.