Buying an Older Home in Salem? What to Check in the Plumbing First

By the Salem Apex Plumbing team · Updated 2026-09-10

Buying an older home in Salem comes with real character and often a better location, but it also means inheriting decades of plumbing decisions made by previous owners, sometimes decades ago and sometimes without a permit. A standard home inspection catches obvious problems, but it typically doesn't cover the specific plumbing risks that tend to cluster in Salem's older housing stock. Here's what's actually worth checking before you close, based on the issues that come up most often in this specific market.

Ask What's Actually Underground

Homes built between the 1940s and early 1970s may still have Orangeburg pipe, a wood-pulp sewer material prone to softening and collapsing over time, especially under the pressure of Salem's clay soil movement. Even older homes might have clay tile, which is more rigid but brittle and prone to root intrusion at its joints. A standard home inspection doesn't typically include a sewer camera inspection, which means either material can be present and functioning adequately right up until it isn't. Requesting a camera inspection as a condition of sale is a reasonable and relatively inexpensive step for any home from this era.

Cast Iron and Galvanized Steel Are Common in Older Homes

Interior plumbing from before the 1980s often used cast iron for drain lines and galvanized steel for supply lines, both of which corrode internally over decades. This doesn't always show up as an obvious problem during a walkthrough, sometimes it's just slightly lower water pressure or a faint metallic taste that a buyer touring the home wouldn't necessarily notice or think to ask about. Running the taps and checking pressure at multiple fixtures, along with asking directly about pipe material and any known corrosion history, is worth doing before you're committed to the purchase.

Check Whether Past Work Was Actually Permitted

Salem requires a permit for water heater replacement, and an unpermitted installation can mean the unit wasn't verified for correct venting, gas connections, or seismic strapping. If the water heater has been replaced during the current owner's tenure, it's fair to ask whether a permit was pulled, and city permit records can sometimes be checked independently to verify.

Groundwater History Matters More Than It Might Seem

If the home has a crawl space or basement, ask directly about any history of moisture, flooding, or sump pump activity, and whether the sump pump, if one exists, has been tested recently. A property closer to the Willamette River or one of its tributary creeks carries more groundwater exposure than one on higher, drier ground, and that's worth factoring into your overall assessment of the property, not just the plumbing specifically.

Mature Trees Near the Sewer Line Are a Real Consideration

A beautiful mature oak or fir in the yard is a real asset to a property, but if it's growing near the sewer lateral's path, it's also a genuine root intrusion risk, especially combined with any of the older pipe materials mentioned above. Asking about any history of drain backups or root-related service calls gives you a more complete picture than the tree's appearance alone would suggest.

A Pre-Purchase Plumbing Inspection Is Worth the Cost

For any Salem home built before the 1980s, a dedicated plumbing inspection, including a sewer camera pass, is a reasonable add-on to a standard home inspection. It typically costs far less than the standard home inspection itself, and it can catch exactly the issues covered here, ones that a general inspector isn't necessarily focused on finding. Our sewer line repair team offers camera inspections that work well as part of a pre-purchase evaluation, giving you real information to negotiate with or plan around rather than an unpleasant surprise after closing. For a fuller picture of the home's plumbing condition beyond just the sewer line, our water heater repair team can also assess an existing unit's age and condition as part of the same visit.

None of this is meant to discourage buying an older Salem home. Plenty of these properties have well-maintained plumbing with no significant issues at all. The point is simply that plumbing condition in an older home isn't something a buyer can reasonably assess by eye during a walkthrough, and a modest additional inspection cost buys real certainty before you're financially committed to the purchase.

Mentioned in This Article

Common Questions