It is intended that this zone establish areas for the development of high-density, multi-family dwellings and group living quarters.  Additionally, it is intended that this zone be located near a major thoroughfare for proper access.  Due to the different types of uses permitted within the zone, careful attention to site design and development is expected to assure that all uses are mutually compatible.

1.   Permitted Uses.

   A.   Neighborhood centers.

   B.   Multi-family dwellings.

2.   Provisional Uses.

   A.   Family care facilities (family homes), provided they are not located within one-quarter (1/4) mile of each other

(Code of Iowa, Sec. 414.22)

   B.   Nursing homes subject to the requirements of Section 165.30.

   C.   Rooming houses, provided the total floor area does not exceed 330 square feet for each 1,000 square feet of lot area and that there is at least 100 square feet of floor area for each roomer.

3.   Conditional Uses.

   A.   Child daycare facilities subject to the requirements of Section 165.30.

   B.   Clubs.

   C.   Group care facilities, provided that there is at least 300 square feet of lot area for each occupant.

   D.   Public utilities.

   E.   Schools - generalized private instruction.

   F.   Transient housing, provided that there is at least 300 square feet of lot area for each permanent resident and 200 square feet for each temporary resident.

   G.   Religious institutions subject to the requirements of Section 165.30.

   H.   Other uses when there is clear evidence that such uses will not seriously affect the value and character of the surrounding neighborhood.

4.   Dimensional Requirements.

   A.   Minimum Lot Area:  6,000 square feet

   B.   Minimum Lot Area Per Unit:  1,000 square feet

   C.   Minimum Lot Width:  None

   D.   Minimum Lot Frontage:  35 feet on a public street or an officially approved place

   E.   Minimum Yards:  (subject to the provisions of Section 165.39)

      (1)   Front - 25 feet

      (2)   Side - 5 feet for the first story, plus 3 feet for each additional story or fraction thereof, that a building exceeds one story in height; on corner lots, the side yard on the street side shall not be less than 25 feet.

      (3)   Rear - 20 feet

   F.   Maximum Building Bulk:

      (1)   Height - 35 feet or as regulated by the Mason City Airport Zoning Ordinance

      (2)   Building Coverage - 40%

      (3)   Floor Area Ratio - None

5.   General Provisions.  All principal and accessory uses permitted within this zone are subject to the requirements of the following sections of this chapter:

   A.   Permitted Accessory Uses and Buildings – See Section 165.31.

   B.   Accessory Use and Building Regulations – See Section 165.32.

   C.   Off-street Parking Requirements – See Section 165.33.

   D.   Off-street Loading Requirements – not applicable.

   E.   Sign Regulations – See Section 165.35.

   F.   Fence Regulations – See Section 165.36.

   G.   Dimensional Requirements – See Sections 165.37 through 165.40.

   H.   Tree Regulations – See Section 165.41.

   I.   Performance Standards – See Sections 165.42 and 165.43.

   J.   Nonconformities – See Section 165.44.

6.   Special Provisions.  None.