414.1  Building restrictions — powers granted — limitations — rental permit caps.
  1.  a.  For the purpose of promoting the health, safety, morals, or the general welfare of the community or for the purpose of preserving historically significant areas of the community, any city is hereby empowered to regulate and restrict the height, number of stories, and size of buildings and other structures, the percentage of lot that may be occupied, the size of yards, courts, and other open spaces, the density of population, and the location and use of buildings, structures, and land for trade, industry, residence, or other purposes.
  b.  A city shall not, after January 1, 2018, adopt or enforce any regulation or restriction related to the occupancy of residential rental property that is based upon the existence of familial or nonfamilial relationships between the occupants of such rental property.
  c.  When there is a replacement of a preexisting manufactured, modular, or mobile home with another manufactured, modular, or mobile home containing no more than the original number of dwelling units, or a replacement of a preexisting site-built dwelling unit with a manufactured, modular, or mobile home or site-built dwelling unit, within a manufactured home community or a mobile home park, the city shall not adopt or enforce any ordinance, regulation, or restriction that would prevent the continuance of the property owner’s lawful nonconforming use that had existed relating to the preexisting home unless any of the following apply:
  (1)  A discontinuance is necessary for the safety of life or property.
  (2)  The nonconforming use has been discontinued for the period of time established by ordinance, unless such discontinuance is caused by circumstances outside the control of the property owner. The period of time so established shall be not less than one year.
  (3)  The replacement results in the overall nature and character of the present use being substantially or entirely different from the original lawful preexisting nonconforming use.
  (4)  The replacement results in an obstruction to a shared driveway or shared sidewalk providing vehicular or pedestrian access to other homes and uses unless the property owner makes modifications to such shared driveway or sidewalk that extinguishes such obstruction or the effects of such obstruction.
  d.  A city shall not adopt or enforce any regulation, restriction, or other ordinance related to residential property rental permit caps on single-family homes or duplexes.
  2.  The city of Des Moines may, for the purpose of preserving the dominance of the dome of the state capitol building and the view of the state capitol building from prominent public viewing points, regulate and restrict the height and size of buildings and other structures in the city of Des Moines. Any regulations pertaining to such matters shall be made in accordance with a comprehensive plan and in consultation with the capitol planning commission.
[C24, 27, 31, 35, 39, §6452; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §414.1]
99 Acts, ch 204, §36; 2017 Acts, ch 94, §1; 2019 Acts, ch 43, §2; 2019 Acts, ch 68, §1, 2
Subsection 1, NEW paragraphs c and d