(1) As used in ORS § 197A.350 and this section, ‘needed housing’ means all housing on land zoned for residential use or mixed residential and commercial use that is determined to meet the need shown for housing within an urban growth boundary at price ranges and rent levels that are affordable to households within the county with a variety of incomes, including but not limited to households with low incomes, very low incomes and extremely low incomes, as those terms are defined by the United States Department of Housing and Urban Development under 42 U.S.C. § 1437a. ‘Needed housing’ includes the following housing types:

(a) Attached and detached single-family housing, middle housing types as described in ORS § 197A.420 and multiple family housing for both owner and renter occupancy;

(b) Government assisted housing;

(c) Mobile home or manufactured dwelling parks as provided in ORS § 197.475 to 197.493;

(d) Manufactured homes on individual lots planned and zoned for single-family residential use that are in addition to lots within designated manufactured dwelling subdivisions;

(e) Agriculture workforce housing; and

(f) Single room occupancies as defined in ORS § 197A.430.

(2) For the purpose of estimating housing needs, as described in ORS § 197A.350 (3)(b), Metro shall adopt findings and perform an analysis that estimates each of the following factors:

(a) Projected needed housing units over the next 20 years;

(b) Current housing underproduction;

(c) Housing units needed for people experiencing homelessness; and

(d) Housing units projected to be converted into vacation homes or second homes during the next 20 years.

(3) Metro shall make the estimate described in subsection (2) of this section using a shorter time period than since the last review under ORS § 197A.350 (2)(a)(B) if Metro finds that the shorter time period will provide more accurate and reliable data related to housing need. The shorter time period may not be less than three years.

(4) Metro shall use data from a wider geographic area or use a time period longer than the time period described in subsection (2) of this section if the analysis of a wider geographic area or the use of a longer time period will provide more accurate, complete and reliable data relating to trends affecting housing need than an analysis performed pursuant to subsection (2) of this section. Metro must clearly describe the geographic area, time frame and source of data used in an estimate performed under this subsection.

(5) Subsection (1)(a) and (d) of this section does not apply to a city with a population of less than 2,500.

(6) Metro may take an exception under ORS § 197.732 to the definition of ‘needed housing’ in subsection (1) of this section in the same manner that an exception may be taken under the goals. [Formerly 197.303]