Denver's competitive housing market pushes buyers to skip steps. On a 1940s bungalow or 1968 ranch, skipping a sewer scope is how you inherit a lateral that roots into every spring for the next decade, or worse, Orangeburg nearing collapse. Denver Drain Cleaners offers the same camera work used after backups as a pre-purchase check.
What a sewer scope shows
A camera travels the lateral from cleanout or accessible entry through the run toward the municipal connection. You see material, clay, cast iron, Orangeburg, PVC, joints, root entry, bellies, offsets, and cracks. Still photos and video become negotiation evidence.
When scope is essential
- Built before 1970 without documented lateral replacement
- Mature trees between house and street
- Seller disclosure mentions past drain backups or root cleaning
- No cleanout visible, access issues themselves are useful to know
Interpreting results
Roots in clay: Common, manageable with maintenance if joints are otherwise sound. Budget for periodic clearing or plan for repair quotes.
Orangeburg oval: Plan for replacement timeline, not just cleaning.
Belly with standing water: Sediment accumulation and repeat clogs likely until repaired.
Near-new PVC: Still worth filming for offsets from poor install, rare but expensive.
Who performs the scope
Some inspectors subcontract camera work; drain specialists also offer pre-purchase inspections with footage you keep. Either way, hire someone who films regularly, not a generalist guessing from a one-time snapshot.
A dedicated sewer scope inspection uses the same equipment as a post-backup camera run, which means repair contractors can trust the footage later.
Negotiation reality
Sellers may credit cleaning or repair; they rarely replace a full lateral pre-close unless failure is obvious. Knowing the number before you own the keys beats discovering it the first Thanksgiving with twelve guests flushing.