Should I Get a Sewer Inspection Before Buying a House?

Written by Steven Shipler, Texas Licensed Master Plumber, Responsible Master Plumber (RMP), MBA, and host of The 4 Guys Education on YouTube.

If you are asking, “Should I get a sewer inspection before buying a house?”, the answer is simple: yes. A sewer inspection is one of the smartest inspections a buyer can order before closing because the sewer line is underground, expensive to repair, and usually not visible during a normal home inspection.

The house may look clean. The toilets may flush. The sinks may drain. The seller may say there are no known plumbing problems. But none of that proves the underground sewer line is in good condition.

The Sewer Inspection Company provides buyer sewer scopes, sewer camera inspections, under-slab sewer evaluations, cast iron sewer inspections, drain diagnostics, sewer locating, and Master Plumber review throughout Plano, Frisco, Allen, McKinney, Richardson, North Dallas, Carrollton, Addison, Las Colinas, Irving, Coppell, and surrounding Dallas-Fort Worth areas.

The cheapest time to find a sewer problem is before you buy the house — not after closing, moving in, and discovering sewage backing up into the bathtub.

Buying a House? Schedule the Sewer Inspection Before Closing

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Get video evidence of the underground sewer line before you close, negotiate, accept repairs, or inherit someone else’s sewer problem.

Call Now: 972-333-5448

Know What’s Underground, Before You Buy.

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Why a Sewer Inspection Matters Before Buying a House

A sewer line is one of the most important systems on the property, but it is also one of the least visible. Most of the line may be buried below the yard, driveway, sidewalk, alley, landscaping, or concrete slab.

That means a buyer can walk through a beautiful home and still have no idea whether the underground sewer line has roots, standing water, pipe separation, old cast iron deterioration, clay pipe failure, or a major belly holding waste.

A sewer camera inspection gives the buyer visual evidence before closing. That matters because once the sale is complete, the sewer problem usually becomes the buyer’s problem.

For a full buyer education page, read our pillar guide here: The Ultimate Guide to Sewer Inspections Before Buying a Home .

What Can a Sewer Inspection Find?

A sewer inspection before buying a house may identify problems that are not visible from above ground.

Tree roots growing into the sewer line
Sewer bellies holding standing water
Offset pipe joints
Pipe separations
Broken sewer pipe
Collapsed sections
Cast iron pipe corrosion and scaling
Clay pipe separation
PVC settlement
Improper slope
Grease and sludge buildup
Foreign objects
Previous repairs
Cleanout access problems
Under-slab sewer defects

Not every issue means you should walk away from the house. But every issue should be understood before you close.

Is a Sewer Inspection Included in a Regular Home Inspection?

Usually, no. A standard home inspection is important, but it is not the same as a sewer camera inspection.

A home inspector typically checks visible and accessible plumbing components. That may include sinks, toilets, tubs, showers, water pressure, visible leaks, and fixture drainage. But the inside of the underground sewer line is not visible without a sewer camera.

Inspection Type	What It Checks	What It May Miss
General Home Inspection	Visible plumbing fixtures, visible leaks, water heater, basic fixture drainage, accessible plumbing components	Hidden underground sewer line defects
Sewer Camera Inspection	Inside condition of the underground sewer line using video inspection equipment	May need cleaning first if the line is blocked

The two inspections work together. The home inspection helps evaluate the visible house. The sewer inspection helps evaluate what is underground.

Why “The Toilets Flush” Is Not Enough

Buyers often assume the sewer line is fine because the toilets flushed during the showing. That is a mistake.

A sewer line can still move water while it has serious problems. Roots may be partially blocking the line. A belly may be holding water and waste. Cast iron may be deteriorating. Clay pipe joints may be separating. PVC may have settled. The pipe may work during a 30-minute showing but fail later under normal family use.

A sewer camera inspection helps answer the question that really matters:

What does the sewer pipe actually look like inside?

When Should a Buyer Absolutely Get a Sewer Inspection?

A sewer inspection is smart for most purchases, but it becomes especially important when the property has any of these risk factors:

The home is older
The home may have cast iron drain piping
The home has mature trees near the sewer path
The property has had foundation work
The seller mentions previous drain cleaning
The seller discloses sewer repair history
The home has slow drains or gurgling toilets
There is sewer odor inside or outside the home
There is an exterior cleanout overflow stain
The yard has soft spots, patchy grass, or suspicious settlement
The home has clay, cast iron, or older mixed pipe materials
You are buying an investment property, rental, flip, or short-term rental

If the house has any of these conditions, do not skip the sewer inspection.

Buyer Warning

If the seller says the drain was “recently cleaned,” ask why. A recently cleaned line may be fine, or it may be a clue that the sewer line keeps backing up.

Call The Sewer Inspection Company before your option period ends: 972-333-5448

What Happens During a Buyer Sewer Inspection?

A buyer sewer inspection should be simple, organized, and documented.

Step 1: Find the access point

The technician looks for a cleanout or another usable access point. A cleanout is usually the best place to insert the sewer camera. If there is no cleanout, another approved access point may be needed.

Step 2: Camera the sewer line

The sewer camera is pushed through the accessible line while the technician watches for roots, standing water, bellies, offsets, breaks, pipe separations, material changes, and prior repairs.

Step 3: Record the findings

Video documentation helps the buyer, realtor, seller, home inspector, and repair contractor understand what was found.

Step 4: Locate serious defects when needed

If a serious defect is found, locating equipment may help identify the approximate surface location and depth for repair planning.

Step 5: Explain the buyer risk

The report should explain whether the line appears serviceable, needs cleaning, needs maintenance, needs repair, needs further testing, or presents a major buying risk.

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Sewer Inspection Videos: See What Buyers Can Find Before Closing

These sewer inspection videos show why a sewer camera inspection before buying a home is so important. A home can look clean above ground while the underground sewer line has roots, bellies, offsets, standing water, cast iron deterioration, broken pipe, or other hidden sewer defects.

Watch these examples before you buy, negotiate repairs, approve sewer work, or close on a property.

Need a Sewer Inspection Before Buying a Home?

Call The Sewer Inspection Company today and know what’s underground before you buy.

Call Now: 972-333-5448

Sewer Inspection Video 1

Sewer Inspection Video 2

Sewer Inspection Video 3

Sewer Inspection Video 4

Sewer Inspection Video 5

Sewer Inspection Video 6

A sewer inspection video gives buyers evidence. Before you close, ask what the underground sewer line actually looks like.

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Can a Sewer Inspection Help You Negotiate?

Yes. A sewer camera inspection can help buyers negotiate because it provides evidence. Instead of saying, “We are worried about the sewer line,” the buyer can show actual video findings.

Depending on the defect, a buyer may be able to request:

Seller repair before closing
Seller credit
Purchase price reduction
Licensed plumber evaluation
Drain cleaning and reinspection
Cleanout installation
Further under-slab evaluation
Sewer repair estimate
Cancellation during the option period if the risk is too high

The inspection does not make the decision for you. It gives you the evidence to make a better decision.

Case Study Examples: What Buyers Can Find

Case Study 1: Roots Near the City Tap

A buyer ordered a sewer camera inspection during the option period. The home looked clean, and the toilets flushed normally. The camera found root intrusion near the sewer connection area. Without the inspection, the buyer would have inherited a recurring backup risk after closing.

Case Study 2: Standing Water Under the Slab

A buyer was purchasing an older slab-foundation home. The sewer camera showed standing water in the under-slab line. Standing water can point to a belly, poor slope, settlement, or pipe deformation.

Case Study 3: Old Cast Iron Pipe Still Draining but Deteriorating

In an older home, the sewer line still carried water, but the camera showed rough cast iron scaling and possible bottom-channel deterioration. The buyer learned about the future risk before closing.

Questions to Ask Before Closing

After the sewer inspection, buyers should ask clear questions.

Was the sewer line inspected from a cleanout?
Was the line inspected toward the city tap?
Was the under-slab section inspected?
What pipe material was visible?
Were roots found?
Was standing water found?
Were any bellies, offsets, cracks, or separations found?
Was cast iron pipe visible?
Were previous repairs visible?
Could the camera reach the full line?
Was the defect located?
Does the line need cleaning, repair, replacement, or further testing?

Do Not Close Blind

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If you are buying a home in Plano, Frisco, Allen, McKinney, Richardson, North Dallas, Las Colinas, Irving, Carrollton, Addison, or Coppell, schedule the sewer camera inspection before closing.

Call Now: 972-333-5448

Know What’s Underground, Before You Buy.

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Final Answer: Should You Get a Sewer Inspection Before Buying a House?

Yes. You should get a sewer inspection before buying a house because the sewer line is underground, expensive to repair, and usually not fully evaluated during a normal home inspection.

A sewer camera inspection can reveal roots, standing water, sewer bellies, offsets, pipe separations, broken pipe, cast iron deterioration, clay pipe separation, previous repairs, under-slab sewer problems, and hidden defects before they become your responsibility.

If you are buying a house, schedule the sewer inspection before your option period ends.

Call The Sewer Inspection Company today at 972-333-5448.

Helpful Internal Links

FAQs

Should I get a sewer inspection before buying a house?

Yes. A sewer inspection before buying a house can reveal hidden underground sewer problems before closing, including roots, sewer bellies, offsets, broken pipe, cast iron deterioration, clay pipe separation, standing water, and under-slab sewer defects.

Is a sewer inspection included in a regular home inspection?

Usually no. A regular home inspection generally checks visible and accessible plumbing components. A sewer camera inspection is a separate underground video inspection of the sewer line.

What does a sewer camera inspection find?

A sewer camera inspection may find roots, standing water, sewer bellies, offset joints, pipe separations, broken pipe, collapsed pipe, cast iron deterioration, clay pipe separation, PVC settlement, grease buildup, and previous repairs.

Can I use a sewer inspection to negotiate?

Yes. Video evidence from a sewer inspection may help you request repairs, ask for a seller credit, negotiate the price, request additional evaluation, or decide whether to move forward before the option period ends.

Who should I call for a sewer inspection before buying a house?

Call The Sewer Inspection Company at 972-333-5448 for buyer sewer scopes, sewer camera inspections, under-slab sewer evaluations, cast iron sewer inspections, drain diagnostics, and video reports.