https://www.oregonlaws.org/ors/308.050
To aid the county court or board of county commissioners and the
Department of Revenue in ascertaining whether a county assessor is
maintaining a county’s appraisal program, the county assessor must
present, with the annual ratio study required by ORS 309.200 (Assessor to collect sales data and prepare ratio study),
a written report as to the current status of the overall program of
property appraisals in the county, specifying what property was
reappraised in the past year and what is to be reappraised in the
current year. [1967 c.316 §2 (2); 1981 c.804 §30; 1989 c.796 §16; 1991
c.459 §86]
ORS 309.200 (Assessor to collect sales data and prepare ratio study)
1) Between January 1 and December 31 of each year the county assessor shall collect sales data for a ratio study.
(2)
The assessor shall prepare and complete a certified ratio study in the
time and manner provided by the rules adopted by the Department of
Revenue. A copy of the sales data collected and used as the basis for
conclusions relating to real market value shall be included with the
ratio study. The assessor shall file a certified copy of the sales data
and ratio study with the department, as prescribed by department rule.
(3)
Not later than October 15 of each year the assessor shall file with the
clerk of the board of property tax appeals a copy of the ratio study.
[1975 c.753 §2; 1981 c.804 §23; 1985 c.613 §24; 1989 c.330 §18; 1991
c.459 §202; 1993 c.270 §43; 1997 c.541 §239; 1999 c.655 §7]
This is the Ratio Study Report for Columbia County. An OTCATS participant:
http://www.co.columbia.or.us/departments/assessors-office-main/certified-tax-roll-data
Jackson county ratio study:
http://jacksoncountyor.org/assessor/Taxes/Tax-Time/Ratio-CPR
ORS 308.232 states: All real or personal property within each county not exempt from ad valorem property taxation or subject to special assessment shall be valued at 100 percent of its real market value.
Sales Data Ratio Study:
SURVEY OF RATIO STUDY METHODS USED BY THE STATES
(September 1995)
https://www.oregonlaws.org/ors/309.200
Crook County
http://co.crook.or.us/Portals/0/June%202016;%20Volume%202%20Issue%206.pdf
Conducted by New York
–
https://www.tax.ny.gov/research/property/reports/ratio/section1.htm
Assessor Assoc standards:
http://www.iaao.org/Search?SearchTerms=ratio%20study
"As stated earlier, ratio studies are primarily conducted to determine
the extent to which local governments are upholding statutory
requirements governing the level and uniformity of assessments and to
make appropriate adjustments where they are not. The most important step
in the verification process is the calculation of a
measure of central tendency
from the individual parcel ratios (of assessed value to either sale
price or appraised value) that are available. Several alternative
statistics can be used to measure central tendency. They would have
identical values for a perfect normal distribution of parcel ratios, but
they normally diverge in practice since the distribution seldom meets
this strict criterion."
http://oregoncounties.org/property-tax-change-ratio-city/
http://oregoncounties.org/property-tax-change-ratio-city/ (more at the link)
House Bill (HB) 2088, as introduced, would grant authority to a city by ordinance or resolution to require calculation by the county assessor of the Changed Property Ratio (CPR) within that city rather than county-wide.
Under Oregon’s complex property tax system, a large portion of which was embedded in the Oregon Constitution by Ballot Measure 50 (1997), new real property is put on the tax roll at a maximum assessed value (MAV) determined by a calculation. First, the property must be identified by category, examples of which include residential, industrial, commercial, machinery & equipment, apartment, or manufactured home. Each category has a Changed Property Ratio (CPR) in each county determined by dividing the average MAV by the average real market value of unchanged property of that category in the county. New property of that category is given a MAV that results from multiplying the CPR (typically a fraction of the number 1) times the real market value (RMV) of the new property
HB
2088 would authorize a city to require the county assessor to calculate
the CPR for properties within the city based only on properties within
that city.
AOC and the Assessors Association opposed the application of the
concept statewide, because it would add complexity and uncertainty of
administration; require additional time and expense to monitor, track,
maintain and explain multiple CPRs in the county; and county computer
software would need to be programmed to handle the change.
The City of Gresham sponsored the bill and the League of Oregon
Cities endorsed it. Gresham determined that the CPR for the city is a
larger fraction than for Multnomah County, and Gresham is expecting a
surge in residential development. After negotiations among the city,
county, AOC and assessors, Multnomah County agreed to amendments that
confine the concept to its cities. On May 11th, the House Revenue
Committee adopted amendments that confine the concept to Multnomah
County, and sent HB 2088A to the House floor with a “do pass”
recommendation. The amendments include specific provisions insisted upon
by the assessors: county cost recovery up to $60,000; a commitment by
the city of the city CPR for at least five years; and a beginning date
of January 1, 2019, unless the Multnomah County Assessor consents to
January 1, 2018.
Contributed by:
Gil Riddell | AOC Policy Director
Exception Value Ratio: Deschutes County New Property Improvements
2017-18 EXCEPTION VALUE RATIO
Property Class Property Type Ratio
|
-
0 Unbuildable 59.5
-
1 Residential 59.5
-
2 Commercial 65.9
-
3 Industrial 65.9
303 State Industrial 100.0
308
Industrial Mach/Equip 100.0
-
4 Tract 56.9
-
5 Farm 56.9
-
6 Forest 56.9
-
7 Multi-Family 66.2
71 Low Income Housing 66.2
8 Resort 84.4
|
The above ratios are applied to the real market value of new property or improvements to property
per ORS. 308.153. These ratios are calculated and applied each year based on the primary
property class for each property. The ratio is only applied to that portion of value that is new.
This adjusted new value is then added to the Maximum Assessed value of any existing property.
ORS. 308.153 was part of Ballot Measure 50 that was implemented in 1997. The statute states
in part... "If new property is added to the assessment roll or improvements are made to property
as of January 1 of the assessment year....the value of the new property or new improvements
determined under this section shall be multiplied by the ratio."
