Buying a home in San Diego is a dream, but if you aren’t careful, that “charming” 1950s bungalow in North Park or that coastal retreat in Pacific Beach can quickly become a money pit.
While a general home inspector checks if the faucets turn on, they rarely look deep into the infrastructure. At Perry Plumbing San Diego, we help buyers spot the expensive disasters before they sign the closing papers. Here are the 7 red flags you must look for.
1. Galvanized Steel Pipes (The “Rusted From Within” Trap)
If you see dull, silver-gray pipes in the garage or crawlspace of an older home, you’re looking at galvanized steel.
- The Red Flag: These pipes rust from the inside out, narrowing the passage for water.
- The Test: Turn on the kitchen sink and the shower at the same time. If the pressure drops to a trickle, the pipes are likely choked with rust.
2. The “Mystery Mix” of Materials
Keep an eye out for “Frankenstein plumbing”—where you see a mix of copper, PEX, and old galvanized steel all joined together with various adapters.
- The Red Flag: This is a sign of “patch-work” plumbing. Instead of a professional repipe, the previous owner likely just fixed leaks as they happened. This usually means a major leak is coming soon.
3. Slow-Draining Sinks and “Gurgling” Toilets
San Diego is famous for its drought-seeking tree roots.
- The Red Flag: If you flush the toilet and hear a gurgling sound in the shower, or if the water in the sink takes more than a few seconds to swirl away, roots have likely invaded the sewer lateral.
- The Fix: Don’t just buy the house; ask for a sewer camera inspection. It’s the only way to see if you’re inheriting a $10,000 sewer collapse.
4. Signs of a Hidden Slab Leak
Many San Diego homes are built on concrete slabs. When pipes under that concrete leak, it’s a massive repair.
- The Red Flag: Look for damp spots on the carpet, warped laminate flooring, or a water heater that seems to be running constantly.
- Pro-Tip: Check the water meter while all faucets are off. If the little dial is spinning, water is escaping somewhere underground.
5. Water Heater Corrosion (The “San Diego Scale”)
Our city’s hard water is brutal on tanks.
- The Red Flag: Look at the top of the water heater. If you see white, crusty mineral buildup or “rust spotting” at the base, the unit is likely at the end of its life.
- The Cost: If the heater is over 10 years old, budget for a replacement immediately after moving in.
6. Low-Flow “Fake-Outs”
California has strict water-saving laws. Some sellers swap in cheap, low-flow fixtures right before an inspection to meet code.
- The Red Flag: If the toilet flush feels “weak” or the showerhead feels like a misting bottle, it might be a cheap fixture hiding poor underlying water pressure.
7. Missing Sewer Cleanouts
Every modern home should have a “cleanout”—a capped pipe in the yard that allows plumbers to clear blockages.
- The Red Flag: If you can’t find a cleanout in the front yard, a plumber will have to pull a toilet or get on the roof to clear a clog, which triples your labor costs every time you have a backup.
Buying a San Diego Home? Get a Second Opinion.
A standard home inspection is a great start, but a Plumbing Diagnostic from a licensed professional can save you from a $50,000 foundation or sewer nightmare.
Before you close escrow, call Perry Plumbing San Diego at 619-472-2112. We offer comprehensive buyer inspections, including high-def sewer camera scans, so you can buy with confidence (or negotiate a better price!).
