10/10/2026
You'll spend twenty minutes in the kitchen and about four seconds under the sink. Nobody checks the plumbing at a viewing — and it's the costliest thing in the house to get wrong.
Here's ten minutes' worth, in order, with no tools.
1. Turn on three things at once. Kitchen tap, bathroom tap, flush a toilet, and watch what happens to the flow. One fixture on its own tells you almost nothing; a house shows itself when three things ask for water together. While you're standing there, time how long the hot water takes to arrive. That's a number you're going to live with every morning.
2. Open every cupboard under a sink. This is the one people get wrong, because they go looking for a drip. A drip is obvious, and it gets fixed before anyone comes round. What you actually want is staining, swelling along the back edge, and board that gives when you press it with your hand. Dark old wood sitting against newer board is exactly the contrast to look for — somebody has already had a problem there.
3. Flush every toilet, then sit on it. Watch it refill: it should stop, and stop properly, rather than trickling on. Then put the lid down, sit, and shift your weight side to side. Any rock at all means it isn't sealed to the floor, and a toilet that moves has been letting water into that floor for a while.
4. Find the water heater and read the label. There's a date on it. A tank well into its second decade is a replacement you may be inheriting, and that's worth knowing before you agree a price rather than after. While you're there: in California it's supposed to be strapped to the wall, top and bottom.
5. Find the main shutoff. You don't need to turn it at somebody else's viewing. You need to know where it is — and if anyone can tell you the last time it moved, that's worth hearing too. A valve nobody has touched in twenty years is its own small project.
6. Then go outside, for two things. First, the cleanout: a capped pipe standing a few inches out of the ground, usually near the house. If nobody can find one, that matters, because it's how the main line gets reached without coming through the house. Second, walk the yard looking for a patch that's wrong — greener, softer or wetter than everything around it, with no sprinkler to explain it.
7. And then ask one question: "Has the sewer line ever had a camera down it?" On an older house with mature trees in the yard, that is the single most expensive thing you can find out cheaply — and it's the one nobody volunteers. If the answer is no, that's not a reason to walk away. It's a reason to find out.
Every one of these is a five-minute job while the house is empty, and effectively impossible once your boxes are in it.
If you're buying around Stockton, we can put a camera down the sewer line and tell you what's actually in it while it's still somebody else's house. And if you know someone who's house-hunting right now, send them this — it's the part of the viewing nobody does.
Licensed, bonded & insured · Lic #1090721
📞 (209) 889-7868 · Free estimates