Corona A meaningful share of Corona's housing stock dates to the 1960s and 1970s, and buying one of these homes usually means inheriting original plumbing that's now well past the point where problems commonly start showing up. A standard home inspection covers the basics, but a few specific items are worth checking further before closing, or at least understanding clearly as part of your overall decision.
Ask About The Supply Line Material
Homes from this era commonly ran either copper or galvanized steel supply lines. Copper, even at 50-plus years old, is often still functional, though it becomes more prone to pinhole leaks with age. Galvanized steel is more concerning, since it corrodes internally over time, gradually narrowing the pipe and reducing water pressure throughout the house, sometimes long before it fails outright. Knowing which material you're dealing with changes how urgently you'd want to plan for eventual repiping.
Get A Camera Inspection Of The Sewer Line
This is arguably the single most valuable plumbing-specific step you can take before buying an older home, and it's not always included in a standard inspection. A sewer camera inspection reveals root intrusion, cracks, or bellied sections in the line running from the house to the street, issues a standard inspector has no way to see. Finding this before closing gives you real negotiating information rather than an expensive surprise afterward.
Ask Directly About Slab Leak History
If the home has ever had a slab leak, the seller or their agent should be able to tell you, and it's a fair, direct question to ask. A single past repair on an otherwise sound system isn't necessarily a red flag, but a pattern of multiple leaks suggests the rest of the under-slab plumbing may not be far behind. This is exactly the kind of history that doesn't always show up in disclosure paperwork unless specifically asked about.
Check The Water Heater's Age
A water heater's manufacture date is usually printed on a label on the unit itself, often encoded in the serial number if not stated outright. Most standard tank units are built for a 10 to 12 year service life, and Corona's hard water tends to shorten that somewhat further. If the unit is already near or past that range, budgeting for a near-term replacement is a reasonable expectation rather than a surprise.
Look At The Water Pressure Directly
Run multiple fixtures at once, a shower and a sink, for example, and see whether pressure drops noticeably. Weak pressure throughout the house can point to corroded galvanized supply lines narrowing internally. That's a different and often more involved fix than a single fixture issue, sometimes indicating the entire supply system is nearing the end of its useful life rather than one isolated problem.
Ask About Backflow Devices And Irrigation
If the property has an irrigation system, confirm whether a backflow prevention device is installed and whether it's been tested recently. This is an easy detail to overlook during a purchase but matters for both compliance and protecting the home's water supply.
Consider A Future Repipe In Your Planning
If the inspection and camera work reveal aging galvanized supply lines, an old sewer lateral, or a pattern of past leaks, a full repipe may be the better long-term move. You don't need to do this immediately after buying. Factoring the likely future cost into your overall budget for the home is a reasonable part of the decision.
What To Do Before You Close
- Get any seller disclosures about past plumbing issues in writing, not just verbal assurances during a walkthrough.
- Ask for clarification or bring in a plumber if a home inspector flags anything ambiguous.
- Don't skip the sewer camera inspection over cost. It's inexpensive relative to what a damaged line costs to fix after closing.
- Understand your contract's contingency terms before deciding how to proceed if a significant issue turns up.
Check For Earthquake Preparedness Upgrades
Some sellers have already installed an automatic earthquake gas shut-off valve, a genuinely California-specific upgrade worth checking for at the gas meter. If it's not present, this is a relatively contained addition you can plan for after closing rather than a dealbreaker, but it's worth knowing either way given the area's seismic activity.
Ask About Any Prior Insurance Claims
If the seller has filed a water damage or plumbing-related insurance claim in the past, that history is worth understanding in detail, including what caused it and what repair was performed. A properly repaired issue with documentation is very different from an undisclosed, informally patched problem, and this distinction matters for both your negotiating position and your own future planning.
Don't Skip The Water Heater's Location And Setup
Beyond the unit's age, check where it's installed and whether it has a drain pan, particularly for units located in an attic, upper floor, or anywhere a leak could cause damage to areas below. Older installations sometimes predate current code requirements for pans and overflow drains, which is worth flagging even if the unit itself is in reasonable condition.
The Bottom Line
None of this means an older Corona home is a bad purchase. It means going in with real information about the plumbing's actual condition rather than assumptions. That way you can budget appropriately and negotiate from an informed position if issues turn up during your inspection period or afterward, rather than discovering them the hard way after you've already moved in and the seller is no longer part of the conversation.