A Sale Does Not Reset Your Oregon Assessed Value
Program and regulatory figures verified September 25, 2026. Details change; confirm your scenario with us.
In most of the country, buying a house is the event that resets its tax basis. Oregon wrote the rule differently, and the difference follows the house rather than the owner.
The rule
The Oregon Department of Revenue describes it in two sentences. The Oregon Constitution limits the rate of growth of property value subject to taxation, and the limit is based on a property's maximum assessed value, or MAV. MAV cannot increase by more than 3 percent each year unless there are changes to the property.
Then it enumerates what counts as a change:
- The addition of a new structure
- Improvement of an existing structure
- A subdivision or partition of the property
Every item on that list is physical or parcel-based. None of them is a sale.
What follows from that
A change of ownership does not by itself lift the 3 percent growth limit. The cap attaches to the property and keeps running, which means an Oregon buyer takes the home with its existing maximum assessed value rather than one recalculated to the purchase price.
For a move-up that is genuinely useful, and it is the opposite of what most national guidance assumes. A great deal of homebuying advice is written around California's reassessment-on-purchase model, and budgeting an Oregon move-up that way overstates the new payment.
The Maryland contrast, because it is exact
Maryland runs the reverse rule. Md. Tax-Property § 9-105 makes the Homestead Tax Credit unavailable for a taxable year where, during the previous taxable year, the dwelling was transferred for consideration to new ownership. The accumulated cap belongs to the seller's tenure and dies at settlement, so the Maryland buyer is assessed at current value and starts building protection again from zero.
| Oregon | Maryland | |
|---|---|---|
| Mechanism | 3% cap on maximum assessed value growth | Homestead Tax Credit capping taxable assessment growth |
| What lifts it | New structure, improvement, subdivision or partition | Transfer for consideration to new ownership, among others |
| Effect of a sale | Does not lift the cap | Withholds the credit; buyer starts uncapped |
Two honest qualifications
This is not a promise that taxes will not rise. The MAV point is narrow. Permanent rate limits, local option taxes and bond levies all still apply, and MAV itself climbs 3 percent a year.
And Oregon taxes the lesser of two numbers. The Department states that each year the MAV and RMV for each property tax account are calculated, and the property is then taxed on the lesser of these two values, which is called the taxable assessed value.
That second point is live in Oregon right now rather than theoretical, because five Oregon metros were losing value as of August 2026. Where real market value falls toward MAV, the lesser-of rule starts to bite in the taxpayer's favour. See the move-up market page.
The renovation threshold, if you are improving before you sell
Improvements are one of the events that can lift the cap, but small work is excluded. The Department states that new additions or improvements exclude minor construction that adds less than $18,200 in one year or $45,000 in five consecutive years to real market value, and that after 2024 those thresholds are indexed annually to the Consumer Price Index.
Whether a particular project crosses that line is a question for your county assessor, not for a lender. We raise it because homeowners often renovate before a move and the tax consequence is not obvious.
The financing side is on the structures page, and the other Oregon advantage on the transfer tax page.
Frequently asked questions
Does buying a home in Oregon reset its assessed value?
Not by reason of the sale. The Oregon Department of Revenue states that maximum assessed value cannot increase by more than 3 percent each year unless there are changes to the property, and lists those changes as a new structure, an improvement of an existing structure, or a subdivision or partition. A sale is not among them.
How fast can Oregon assessed value grow?
Maximum assessed value cannot increase by more than 3 percent each year, unless one of the enumerated changes to the property occurs.
Am I taxed on market value or assessed value in Oregon?
On the lesser of the two. The Department states that each year the MAV and RMV for each property tax account are calculated, and the property is taxed on the lesser of these two values, called the taxable assessed value.
Does a renovation lift the Oregon 3 percent cap?
An improvement can, but minor construction is excluded where it adds less than $18,200 in one year or $45,000 in five consecutive years to real market value, with those thresholds indexed annually to the CPI after 2024. Whether a specific project crosses the line is a question for your county assessor.
Does this mean my Oregon property taxes will not increase?
No. The point is narrow: a sale does not lift the 3 percent MAV growth limit. Permanent rate limits, local option taxes, bond levies and compression all still apply, and MAV itself rises 3 percent a year.
Mike Certo · NMLS #260555 · Cornerstone First Mortgage NMLS #173855 · Equal Housing Lender. Educational content about financing, not a loan commitment and not legal, tax, or real estate advice. Oregon property tax is administered county by county under the Department of Revenue, and whether any local charge applies to your transfer depends on where the property sits; your closing agent, your CPA or an Oregon attorney, and your real estate agent each handle their own part. Loans are subject to borrower and property qualification.