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Planning staff outline risks and benefits of reducing minimum lot sizes; zoning update tied to AIM process
Summary
City planning and public works staff presented options and constraints for smaller minimum lots, highlighting utility and emergency-access challenges for retrofits and recommending code updates as part of a broader zoning rewrite tied to AIM.
Jane (planning director) and Scott Stearns (public works/subdivision official) presented the committee with a review of subdivision scenarios and the practical constraints the city faces if it reduces minimum lot sizes.
Jane described two common scenarios: greenfield subdivisions (large tracts divided into many new lots) and infill short-form plats (splitting a single existing lot into two). She said short-form plats require street frontage and adequate emergency-vehicle access, utility easements and setbacks, and that in many older core-area lots water and sewer lie on opposite lot edges, which can complicate retroactive subdivision.
Scott Stearns explained examples the city has approved, including panhandle lots and shared access easements, and noted that some new subdivisions have used panhandles and shared drives successfully. He said the city plans to revisit subdivision regulations as part of a forthcoming rewrite of the zoning code and noted an existing design standard of roughly 65% lot coverage used in newer developments; exceeding that coverage would create drainage and capacity issues unless offset with low-impact development techniques.
Staff told council members that reducing minimum lot sizes for new greenfield development is feasible if a developer plans for the resulting layout and utilities in advance, but retrofitting smaller lots into fully built neighborhoods can create unintended consequences (utility access, nonconforming setbacks, and increased impervious coverage). Jane said the short form plat process still requires legal subdivision steps, time and money.
Council members raised concerns about demolition of older housing stock, potential conversion of new small lots into short-term rentals, and neighborhood parking impacts. Councilor Montano said the intent should be to make efficient use of land in new greenfield development and in targeted redevelopment, not to force retroactive changes. Councilor Berg warned that smaller lots in core neighborhoods could be used for short-term rentals and harm affordability.
Staff requested council direction to incorporate lot-size and subdivision-regulation changes into the AIM planning process and the zoning-code rewrite; they said no formal action was required at this time and that any adopted changes would not alter existing property without owner consent.
No formal votes were taken during the committee discussion.
