(c) “Eligible governmental unit” means the governmental unit having jurisdiction of an eligible project, as determined by the authority.

(d) “Eligible project” means a project for housing infrastructure for workforce housing or senior housing.

(dd) “Governmental unit” means a city, village, town, or county or federally recognized American Indian tribe or band in this state.

(e) “Housing infrastructure” means that portion of the installation, replacement, upgrade, or improvement of public infrastructure, or private infrastructure in rural areas if transferred to public use, as determined by the authority, that relates to an eligible project.

(f) “Public infrastructure” means any of the following that is or will be owned, maintained, or provided to or by a governmental unit:

1. A water distribution system.

2. A water treatment plant.

3. A wastewater treatment plant.

4. A sanitary sewer system.

5. A storm sewer system.

6. A stormwater retention pond.

7. A lift or pump station.

8. A street, road, alley, or bridge.

9. A curb, gutter, or sidewalk.

10. A traffic device.

12. An electric or gas distribution line.

(g) “Residential housing” means new single-family or multifamily housing for rent or sale that satisfies all of the following:

1. Is subject to taxation under ch. 70.

2. Has not been the subject of a claim for a state or federal historic rehabilitation tax credit, as determined by the authority.

3. Has not received financial assistance from tax increments generated by an active tax incremental district.

(h) “Senior housing” means residential housing that satisfies par. (i) 1. to 4. and that is intended and operated primarily for occupancy by at least one person 55 years of age or older per dwelling unit, as determined by the authority.

(i) “Workforce housing” means residential housing that satisfies all of the following, as determined by the authority:

1. For housing intended to be rented, the estimated annual housing costs, as defined under s. 16.301 (3), do not exceed, or are not expected to exceed, 30 percent of 100 percent of the area median income, with family size determined using the federal imputed income limitation, as defined in 26 USC 42 (g) (2) (C), and the utility-related costs if not included in the rent equal the utility allowance determined by the federal department of housing and urban development.

2. For housing intended to be occupied by the owner, the estimated annual housing costs, as defined under s. 16.301 (3), do not exceed, or are not expected to exceed, 30 percent of 140 percent of the area median income, with family size determined using the federal imputed income limitation, as defined in 26 USC 42 (g) (2) (C).

3. For housing intended to be rented, the housing is for occupancy by individuals whose annual household income does not exceed 100 percent of the area median income.

4. For housing intended to be occupied by the owner, the housing is for purchase by individuals whose annual household income is not more than 140 percent of the area median income.

(2) Establishment of fund. (a) There is established under the jurisdiction and control of the authority a residential housing infrastructure revolving loan fund, for the purpose of providing loans under sub. (3). The authority may use moneys in the fund to cover actual and necessary expenses incurred to accomplish the purposes of this section, including marketing expenses under sub. (6), and administer the fund. The fund shall consist of all of the following: