The Des Moines City Council on Monday will hold a work session on the city’s proposed new zoning code. A likely topic to be discussed is whether to establish a minimum size for newly built houses. Proposed minimum house size requirements were included in a proposed zoning code that was released in May. The city’s Plan and Zoning Commission earlier this month declined to include the requirements when it approved the new code. City staff, elected officials and community members have worked for more than five years on rewriting the current code, which was put in place in the 1960s and has been updated more than 300 times. About two years ago, a first draft of the rewritten code was released and received hundreds of complaints and suggestions for changes. Staff and others reviewed the comments, reworked the zoning code and re-released it this spring with numerous changes and additions, including minimum standards for new houses in Des Moines. The minimum house size requirements sparked an outcry among homebuilders and affordable housing advocates who said the standards would drive up the cost of a new house and be unaffordable for moderate-income families. The council will meet at 7:30 a.m. Monday at City Hall, 400 Robert D. Ray Drive.