Buying a Home With Septic in Jackson County, Oregon

Rural and semi-rural homes are a big part of the Rogue Valley market, and most of them come with a septic system. For a buyer, the system is one of the most expensive components of the property that cannot be seen. This guide walks through what to ask for, what the Oregon paperwork covers, and the red flags worth slowing down for.

Step 1: Read the seller's disclosure

Oregon's statutory seller property disclosure (ORS 105.464) has a sewage system section. It asks whether the property is on public sewer or an onsite system, whether the system was installed by permit, whether it has been repaired or altered, whether it has been evaluated with a report issued, and whether and when the tank was pumped. Unknown answers are not automatically bad, but they are a reason to dig further.

Step 2: Pull the DEQ records yourself

DEQ keeps onsite septic records for Jackson, Josephine and Curry counties, searchable by parcel number. Records can show the permitted design, tank size, the design bedroom count, drainfield layout, and any repair permits. Compare the permitted bedroom count with the house you are buying; additions and converted rooms sometimes outpace the original design. See how to find septic records.

Step 3: Use the septic addendum

Many Oregon purchases use the Oregon Real Estate Forms septic/onsite sewage system addendum (OREF 081). The published sample says onsite system inspections must be performed by a DEQ-certified professional, notes that a property may have more than one system and that parts of a system may not be on the property they serve, and that DEQ may require abandoned systems to be decommissioned. It also provides a period after reports are delivered for buyer and seller to negotiate deficiencies. Your agent controls the deadlines.

Step 4: Schedule the inspection early

Inspection slots, pumping and digging to find buried lids all take time, and winter rain can slow drainfield assessment. Book as soon as the addendum is signed. Coordinate with the seller so the tank is not pumped twice. More on our home sale inspections page.

Step 5: Check for service contracts

If the system is an ATT, a pressure distribution system or residential sand filter permitted after January 1, 2014, or another type listed in DEQ's operation and maintenance fact sheet, the owner must keep a contract with a certified maintenance provider. Ask for the contract, the latest service report, and, for ATT systems, the owner's manual. Plan to take over or replace the contract at closing so coverage does not lapse. Our system types guide explains which designs are covered.

Red flags

• No permit record for the system, or records for a smaller house than the one for sale.
• No pumping history, or a tank pumped right before listing with no inspection.
• Driveways, decks, pools or outbuildings over the drainfield.
• A drainfield in a low, wet area, or wet ground over it in dry weather.
• An alarm panel that is disconnected or silenced.
• More structures with plumbing than the records account for.

If the inspection finds problems

Get written repair estimates before the negotiation window closes. Repairs to a failing system generally need a DEQ permit. Our drainfield replacement cost guide gives published ranges to sanity-check bids.

Do not forget the well

Many rural properties also have a private well. Well testing and the septic inspection are separate tasks, and the setback between them matters if a drainfield ever needs replacing.

General information, not legal advice. Confirm deadlines with your agent and requirements with DEQ.

Common questions