Short answer: yes, always. A pre-purchase sewer scope costs $150-$300. The sewer problems it can find cost $5,000-$25,000 to repair after closing. We've seen buyers negotiate tens of thousands in repair credits — or walk away entirely — based on what a camera found underground. It's the best $200 you'll spend in the buying process.
What a Standard Home Inspection Misses
A standard home inspection is thorough in what it can see. It covers the roof, structure, electrical, HVAC, visible plumbing fixtures, and water pressure. What it can't do is look inside your sewer line — the pipe that carries all wastewater from your home to the city main, typically buried 4-8 feet underground in your front yard.
That pipe might be 70 years old. It might have tree roots growing through it. It might have partially collapsed from soil movement. It might be made of Orangeburg — a tar-impregnated paper product from the 1940s and 50s that disintegrates over time. The home inspector cannot see any of this without a camera scope.
What a Sewer Scope Inspection Finds
A sewer camera inspection pushes a waterproof HD camera on a flexible cable through your main sewer line from a cleanout or pulled toilet, recording video the entire way. A good technician narrates what they're seeing, notes the location and depth of any problems, and provides you with written documentation and the video to keep.
Common Findings in Colorado Homes
- Root intrusion — the most common finding. Roots from trees (and sometimes shrubs) enter through cracks and joints, growing slowly until they choke the line. Minor root intrusion can be cleared; heavy root damage with pipe compromise usually needs trenchless repair or replacement.
- Bellying (sagging sections) — when soil shifts or settles, a section of pipe can sag downward, creating a low spot where solids collect and clogs form. Clay soil in Denver is notorious for this. Bellies can't be cleared — the pipe needs to be re-graded or replaced.
- Orangeburg pipe — homes built between roughly 1945 and 1975 often have Orangeburg sewer lines. This material was never meant to last forever and most has long since begun to deform and deteriorate. It's not a question of if Orangeburg will fail — it's when. Any Orangeburg finding should prompt a replacement estimate.
- Clay tile with separated joints — older clay pipe has rubber or cement joints that can separate from ground movement, creating gaps where roots enter and where soil can collapse into the line.
- Cast iron corrosion — mid-century cast iron sewer pipes corrode from the inside. Heavy buildup restricts flow; severe corrosion means sections have failed or are about to.
- Offset joints — sections of pipe that have shifted horizontally or vertically at a joint, creating a ledge where waste catches and eventually blocks.
- Foreign objects — you'd be surprised what accumulates over decades. Feminine products, paper towels, toy parts, grease masses.
- Pipe material identification — knowing what your sewer is made of helps predict its remaining life even if no active problems are found.
What It Costs — Inspection vs Repair
This is the math every buyer needs to see:
Cost of a Sewer Scope Inspection
- Pre-purchase sewer camera inspection: $150-$300
- Includes written report, video footage, and depth/location readings
- Takes 30-60 minutes, can be scheduled same week
Cost of What It Might Find
- Root clearing + camera: $400-$800 (and worth doing even if no structural damage)
- Trenchless sewer repair (CIPP lining): $5,000-$15,000
- Pipe bursting replacement: $8,000-$20,000
- Full excavated sewer replacement: $10,000-$25,000+
- Orangeburg full replacement: $12,000-$25,000
We've done $20,000+ sewer jobs for buyers who didn't get scoped before closing. That's their entire down payment in repairs, usually in the first two years of ownership.
Denver Neighborhoods Where a Sewer Scope Is Especially Important
If you're buying in any of these neighborhoods or in a home built before 1980, a sewer scope should be non-negotiable:
- Capitol Hill, Cheesman Park, Congress Park — bungalows from 1910-1940, mostly clay or cast iron sewer lines, large mature trees
- Park Hill, Montclair, Hale — heavy tree coverage, mix of clay and early cast iron
- Sunnyside, Highlands, Berkeley — similar age, high Orangeburg risk in 1950s-60s additions
- Baker, South Broadway corridor — mix of original clay and 1950s Orangeburg
- Whittier, Five Points, Cole — some of Denver's oldest housing stock
- Lakewood, Wheat Ridge, Arvada (pre-1975 homes) — large lots with mature trees, high root-intrusion risk
- Colorado Springs (pre-1970 homes) — significant clay tile sewer infrastructure
How to Use the Findings in Your Negotiation
A sewer scope finding is a negotiating tool — not automatically a deal-breaker. Here's how smart buyers use the results:
If the line is clean:
You have peace of mind and documentation. The scope report stays in your home file for the next buyer or for your own reference when the first backup happens years from now.
If there's minor root intrusion or buildup:
Request a price reduction or seller credit for the cost of hydrojetting and a follow-up inspection. This is usually $400-$800 — a minor negotiating point that sellers almost always concede.
If there's structural damage (bellies, offset joints, Orangeburg):
Get a repair estimate from a licensed plumber (we provide these quickly). Present the estimate and request a price reduction equal to the repair cost. Sellers can accept, counter, or agree to fix it before closing. Some will refuse — at which point you decide whether to proceed or walk. In a market like Denver's, many sellers will negotiate rather than lose a sale.
If the line is severely compromised or fully collapsed:
This is a walk-away-or-steep-discount situation. A $20,000 sewer repair that the seller won't credit is a legitimate reason to terminate the purchase agreement during the inspection period. The scope fee was the best $200 you ever spent.
Tip for Buyers: Time Your Scope During the Inspection Period
Schedule the sewer scope at the same time as your general inspection — not after. If the scope reveals a serious problem, you want maximum time to get repair estimates and negotiate before your inspection period ends. Most scopes can be scheduled within 24-48 hours of request.
Frequently Asked Questions
How much does a sewer scope cost in Colorado?
A pre-purchase sewer scope in Colorado typically costs $150-$300, including written report and video footage. The inspection takes 30-60 minutes.
Does a standard home inspection include the sewer line?
No. A standard home inspection does not include a sewer camera inspection. It must be specifically requested and is performed by a plumber with camera equipment, not a general home inspector.
What sewer problems are most common in Denver's older neighborhoods?
Root intrusion, Orangeburg pipe deterioration, clay tile with offset or separated joints, bellied pipe sections from soil movement, and cast iron corrosion. Many older Denver homes have never had sewer work done.
Can a sewer scope damage the pipe?
No — the camera is a flexible, passive device. It cannot damage the pipe. It may find existing damage that would have caused problems regardless, but the scope itself causes no harm.