Why a Standard Home Inspection Isn't Enough
General home inspectors are trained to assess many systems but are not licensed plumbers. They check visible supply lines, test faucets and toilets, and look for obvious leaks — but they do not run sewer line cameras, test water pressure accurately, identify pipe materials, or evaluate the condition of underground lines. In Los Angeles, where many homes were built in the 1940s–1970s with galvanized steel pipes and clay sewer lines, a general inspection routinely misses $10,000–$50,000+ in plumbing problems.
What a Professional Plumbing Inspection Covers
A pre-purchase plumbing inspection from Plumbing 405 includes: identification of all pipe materials (galvanized, copper, PEX, polybutylene); water pressure testing at multiple fixtures; sewer line video camera inspection; water heater age, condition, and code compliance assessment; leak check under all sinks, around toilets, and at the water heater; inspection of all accessible supply lines and drain connections; gas line visual inspection; review of any previous plumbing permits on file; and a written report with photos and prioritized recommendations.
The Most Important Item: Sewer Camera Inspection
A sewer camera inspection is the single most important plumbing test for any LA home purchase. We run a high-definition camera through the main sewer line from the cleanout to the city connection. This reveals: root intrusion (extremely common in LA due to mature trees), cracks and offsets in clay or cast iron pipe, pipe bellies (low spots that cause chronic backups), collapsed sections, and the presence of older clay or Orangeburg pipe. Sewer line replacement can cost $8,000–$25,000+. A $300 camera inspection before closing is the best money you'll spend in the entire transaction.
Red Flags in LA Homes That Demand a Plumbing Inspection
Require a plumbing inspection before making an offer if: the home was built before 1985 (high likelihood of galvanized or clay pipes); there are large trees near the house (root intrusion risk); the home has had multiple owners or appears to have deferred maintenance; you see staining under sinks, around the toilet base, or near the water heater; the water pressure feels low or varies significantly; the sewer cleanout is missing or inaccessible; or there are signs of previous water damage.
How Much Does a Pre-Purchase Plumbing Inspection Cost in LA?
A comprehensive pre-purchase plumbing inspection in Los Angeles runs $350–$700 depending on the size of the home and whether a sewer camera inspection is included. This is a negligible cost relative to the potential repair bills it can uncover — or the negotiating power it gives you with the seller. Plumbing 405 provides a detailed written report with photos that you can use directly in your purchase negotiations.