The math
30-minute job, $150-$200 price tag, 80% margin. Tack onto every pre-purchase inspection that involves an older home or a big tree near the line.
What you need
A pushrod camera ($800-$2,500), a clean carrying case, and software that supports a dedicated capture mode.
What InspectorData does
Dedicated camera mode, condition library (root, offset, belly, crack, scale), distance markers from cleanout. Full sewer scope page →
How to sell it
Bundle with pre-purchase: "For $175 more I'll camera the main line — that's what catches the $5,000 surprises." 60-70% of buyers say yes.