OAR 150-308-0240
Real Property Valuation for Tax Purposes

(1) For purposes of this rule, these words and phrases have the following meanings:
(a) “Unit of property” means the item, structure, plant, or integrated complex as it physically exists on the assessment date.
(b) “Real property” means the real estate (physical land and appurtenances, including structures, and machinery and equipment, that comprise an integral part of the property or manufacturing operation) and all interests, benefits, and rights inherent in the ownership of the physical real estate.
(c) “Rural lands” means those lands with property classification 400, 401, 500, 501, 600, 601, 800, and 801 as defined by OAR 150-308-0310 (Real Market Value and Property Classification as Part of Assessment Roll). They are distinguished from platted land as acreages in varying sizes and are either improved or unimproved.
(d) “Utility” means the quality or property of being useful, which may either add to or subtract from real market value.
(e) “Highest and best use” means the reasonably probable use of vacant land or an improved property that is legally permissible, physically possible, financially feasible, and maximally productive, which results in the highest real market value.
(f) “Just compensation to the owner” means the amount of compensation for a property that an owner would expect for the taking through condemnation of their property. Just compensation is the real market value of the property at its highest and best use.
(2) Methods and Procedures for Determining Real Market Value:
(a) For the valuation of real property all three approaches, sales comparison approach, cost approach, and income approach, must be considered. For a particular property, it may be that not all three approaches are applicable. However, each approach must be investigated for its merit in each appraisal.
(b) The real market value of a unit of property may not be determined from the market price of its component parts, such as wood, glass, concrete, furnaces, elevators, etc., each priced separately as an item of property, without regard to its being integrated into the total unit.
(c) In utilizing the sales comparison approach, only actual market transactions of property comparable to the subject, or adjusted to be comparable, may be used. All transactions utilized in the sales comparison approach must be verified to ensure they reflect arms-length market transactions. When non-typical market conditions of sale are involved in a transaction (duress, death, foreclosures, interrelated corporations or persons, etc.), the transaction may not be used in the sales comparison approach unless market-based adjustments can be made for the non-typical market condition.
(d) If there are no market transactions of property comparable to the subject, then it is still appropriate to use market value indications derived by the cost and income approaches.
(e) Sales on the basis of disposal at salvage or scrap levels are indicators of market value only when on the assessment date such disposal of the subject property is imminent, or has actually taken place.
(f) The cost approach must use the reproduction, replacement or used equipment technique. However, original historical cost may be used when appraising property under ORS 308.505 (Definitions for ORS 308.505 to 308.674) to 308.730. The value estimate must include all costs required to assemble and construct the unit of property.
(g) The income to be used in the income approach must be the economic rent that the property would most probably command in the open market as indicated by current rents being paid, and asked, for comparable space. Income from the operation of the property may be utilized for property types, such as industrial plants, that are not typically leased or rented.
(h) The real market value for rural lands is based on an average price per acre for each size of parcel. Adjustments to the value must be made to those acres with more or less utility. For improved parcels, the value of the site developments as defined by OAR 150-307-0010 (Real Property) must be added.
(i) Determining highest and best use for the unit of property is necessary for establishing real market value. This determination of highest and best use may include, among others, all possible uses that might result from retaining, altering, or ceasing the integrated nature of the unit of property.
(3) Valuation of Special Purpose Property:
(a) Special purpose property is property specially designed, equipped, and used for a specific operation or use. This may occur because the special purpose property is part of a larger total operation or because of the specific nature of the operation or use.
(b) Some, but not all, special purpose property may be designed without concern for marketability.
(c) Market sales data for the property at its highest and best use may not exist for a special purpose property, which is what is meant by the phrase “no immediate market value” in ORS 308.205 (Real market value defined)(2)(c). Where there is no immediate market value, real market value is determined by estimating just compensation for loss to the owner of the unit of property through either the cost or income approaches, whichever is applicable, or a combination of both.
(4) Real market value for all personal property must be determined as of the date of assessment and must take into account the location and place in the level of trade of items of property in the hands of manufacturers, producers, wholesalers, distributors, retailers, users, and others.

Source: Rule 150-308-0240 — Real Property Valuation for Tax Purposes, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=150-308-0240.

150–308–0010
Continuing Education Requirements for Registered Appraisers, Waiver of those Requirements, and Revocation of Registrations 150–308–0020
Revocation of Appraiser Registration 150–308–0030
Appraiser Trainee Program 150–308–0040
Standards for Imposition, Waiver, and Reduction of Penalty on Utilities and Designated Companies Assessed by the Department. Imposition of Penalty for Failure to File a Timely or Complete Return 150–308–0050
Continuing Education Requirements for Assessors 150–308–0060
Continuing Education Requirement for Appraisal Managers in County Assessment Offices 150–308–0070
Qualifications of Managerial Employees of the Assessor’s Office 150–308–0080
Taxable Personal Property Whose Temporary Situs Is in the State of Oregon 150–308–0090
Billboards as Real Property 150–308–0100
Determining Maximum Assessed Value when the Property Class is Changed 150–308–0110
Reduction of Maximum Assessed Value (MAV) for Property Destroyed or Damaged by Fire or Act of God 150–308–0120
Reduction of Maximum Assessed Value (MAV) When a Building is Demolished or Removed 150–308–0130
Definitions 150–308–0140
Computation of Changed Property Ratio for Centrally Assessed Property 150–308–0150
Net Capitalized Additions 150–308–0160
Minor Construction 150–308–0170
Establishing a Changed Property Ratio 150–308–0180
Definition of Affected 150–308–0190
Subdivided and Partitioned Property MAV 150–308–0200
Rezoned Property — Calculating Maximum Assessed Value (MAV) 150–308–0210
Omitted Property—Allocating Maximum Assessed Value (MAV) 150–308–0220
Exemption, Partial Exemption or Special Assessment Disqualification — Allocating MAV 150–308–0230
Calculation of Maximum Assessed Value (MAV) for Lot Line Adjustments 150–308–0240
Real Property Valuation for Tax Purposes 150–308–0245
Partial Exemptions and Special Assessments of Land 150–308–0250
Derivation of Capital Structure and Discount Rates for Valuing Industrial Properties and Department-Assessed Properties 150–308–0260
Industrial Property Valuation for Tax Purposes 150–308–0270
Valuation of Contaminated Property 150–308–0280
Measuring Functional Obsolescence in Industrial Property 150–308–0290
Effective Tax Rate 150–308–0300
Valuation Review of State-appraised Industrial Property. 150–308–0310
Real Market Value and Property Classification as Part of Assessment Roll 150–308–0320
Property With Multiple Leases Assessed as One Parcel 150–308–0330
Contents of Assessment Roll for Condominiums 150–308–0340
Printout or Microfiche Required When Assessment and Tax Rolls do not Constitute a Written Record 150–308–0350
Filing Requirements for Certain Delayed Annexations by Cities 150–308–0355
Filing Requirements for Boundary Changes 150–308–0360
Appraisals of Real Property by Registered Appraisers 150–308–0370
Determining Taxable Value for Assessment Charges on Property Exempt from Taxation 150–308–0380
Appraisal of Real Property 150–308–0390
Agricultural Land Devoted to Agricultural Purposes 150–308–0400
Stipulation Procedures 150–308–0410
Cancellation of Personal Property Assessments 150–308–0420
Exemption of Watercraft Undergoing Repairs 150–308–0430
Valuation of New Construction 150–308–0440
Confidentiality — Returns of Taxable Property 150–308–0450
Industrial Property Returns — Incomplete Returns and Late Filing Penalties 150–308–0470
County Contractors Having Access to Confidential Records 150–308–0480
Confidentiality of Property Tax Information for Centrally Assessed Companies 150–308–0490
Appraisal and Valuation of Industrial Plants 150–308–0500
Confidentiality of Industrial Plant Information 150–308–0510
Definition of Destroyed or Damaged 150–308–0520
Valuation of Nonprofit Homes for the Elderly 150–308–0530
Defining “Communication Services” 150–308–0540
Assessment of Properties of Designated Utilities and Companies by Department of Revenue 150–308–0550
Property Used for Guide Service 150–308–0560
Confidentiality of Appraisals of Designated Utilities and Companies by Department of Revenue 150–308–0570
Computation of Changed Property Ratio for Centrally Assessed Property 150–308–0580
Allocation of Mobile Aircraft Property Value 150–308–0585
Procedure for Determining Oregon Property Value for Private Railroad Car Companies 150–308–0590
Allocation of Centrally Assessed Electric Company Property Value 150–308–0595
Allocation of Centrally Assessed Gas Distribution Company Property Value 150–308–0600
Allocation of Centrally Assessed Pipeline Company Property Value 150–308–0605
Allocation of Centrally Assessed Railroad Company Property Value 150–308–0610
Allocation of Centrally Assessed Communication Company Property Value 150–308–0615
Allocation of Centrally Assessed Water Transportation Company Property Value 150–308–0660
Unit Valuation of Centrally Assessed Properties 150–308–0670
Contents of the Utility Assessment Roll 150–308–0680
Contents of Department’s Journal 150–308–0690
Centrally Assessed Property — Appraisal Guidelines 150–308–0695
Removal of Certain Elected Exempt Property from Correlated System Real Market Value of Centrally Assessed Property 150–308–0700
Qualification of Property for Special Assessment as Government Restricted Multiunit Rental Housing 150–308–0710
Application and Election Process for Government Restricted Multiunit Rental Housing 150–308–0720
Special Assessment of Government Restricted Multiunit Rental Housing Property 150–308–0730
Special Assessment Disqualification Process 150–308–0740
Process for Voluntary Disqualification from Special Assessment Program and Subsequent Application 150–308–0750
Payment of Taxes on Manufactured Structure That Allows Change from Real Property to Personal Property Status 150–308–0760
Manufactured Structure Classified as Real or Personal Property 150–308–0770
Real and Personal Manufactured Dwellings to be Assessed in Like Manner 150–308–1010
Farm Use Definitions, Inactivity Due to Illness, and Description of Lands in Non-Exclusive Farm Use 150–308–1020
Disposal by donation to a local food bank or school 150–308–1030
Assessment of Farmlands Within Exclusive Farm Use (EFU) Zones 150–308–1040
Assessment of Farmlands Outside of Exclusive Farm Use (EFU) Zones 150–308–1050
Gross Income Requirement 150–308–1060
Wasteland 150–308–1070
Acquired Land as Part of Farming Unit 150–308–1080
Valuation of Certain Agricultural Land to Reflect Value for Farm Use Only 150–308–1090
Calculation of MSAV When SAV Soil Classification is Changed 150–308–1100
Disqualification of Exclusive Farm Use Farmland 150–308–1110
Disqualification of Non-Exclusive Farm Use (Non-EFU) Farmland 150–308–1120
Definition of Specially Assessed Homesites 150–308–1130
Application for Specially Assessed Homesite 150–308–1140
Qualified Specially Assessed Homesite Valuation 150–308–1150
Ratio Calculation for Open Space Lands 150–308–1500
Additional Tax Calculation and When to Impose Additional Tax 150–308–1510
No Additional Tax 150–308–1520
Deferred Additional Tax (ORS 308A.706) 150–308–1530
Disqualification Notification Procedures
Last Updated

Jun. 8, 2021

Rule 150-308-0240’s source at or​.us