A pre-purchase sewer scope is a camera inspection of a home's sewer line done during your inspection window. It screens for one of the most expensive defects a house can hide — a failing lateral — for a fraction of the cost of the repair. Standard home inspections do not include it; you have to ask.
The sewer lateral is the one major system a general home inspection cannot see: it is buried, it belongs to the homeowner (not the city), and its failure is routinely a five-figure repair. That combination is exactly why a scope belongs in every purchase — and why realtors who have been burned once, like the ones who refer us, never skip it again.
Why the standard inspection does not cover it
A home inspector runs water and watches drains — and a line with a serious defect can still drain fine on inspection day. Roots, bellies, and cracked clay reveal themselves over months of use, not in a twenty-minute walkthrough. Only a camera in the pipe sees the actual condition.
What the scope covers
We run the camera from the home's cleanout to the city main and evaluate the whole run: pipe material and age, root intrusion, scale, bellies, offsets, and any breaks — each located and depth-marked from the surface. You get the findings in plain English while you watch, and footage you can share with your agent.
Older homes vs. new builds
Everyone scopes 1970s houses with mature trees — and they should. But new construction deserves it too: we regularly find construction debris in lines, bellies from soil settling under fresh grading, and equipment damage from the build itself. On a new home, footage taken during your inspection window is exactly the evidence a builder-warranty claim wants.
How to read the results
- Clean line: buy with confidence — and keep the footage as your baseline.
- Maintenance findings (light roots, buildup): normal for older homes; budget a jetting, not a crisis.
- Structural findings (bellies, offsets, breaks): now you are negotiating with evidence — repair credits and price reductions follow footage, not hunches.
- Failed line: better to know before closing than after the moving truck.
When to schedule it
Inside your inspection objection window, alongside the general inspection. The visit typically takes under an hour, and in a competitive market a same-week scope can be the difference between waiving blind and buying informed. If you are under contract in Parker, Denver, Castle Rock, or Aurora, tell us your deadline when you call — closings move fast and we know it. Choosing between inspection companies? Run our five tests for picking a drain company on all of them.