Murrieta council introduces revised residential design standards, removes ADU section for later review

The Murrieta City Council on June 2 introduced an ordinance recasting the city's multifamily objective design standards as citywide residential objective design standards and approved targeted changes to setbacks and compliance materials.

Staff and consultants told the council the update extends objective, ministerial design rules into single-family and duplex zones while simplifying compliance. The draft would remove a lengthy compliance checklist and scale decorative architectural features with project size. Staff recommended trimming the proposed accessory dwelling unit (ADU) design section (section 3.5) after receiving an advocacy letter and agreed to return with separate ADU guidance.

The most debated change concerned the distance separation between structures on single lots. Planning staff had proposed a flexible, market-responsive approach that would allow a reduced separation for small, for-sale duplex/small-lot products to encourage more for-sale housing; planning commissioners recommended a 10-foot minimum. After discussion, council adopted staff’s sliding-scale approach (reduced separation for two-unit configurations, larger separations for bigger massings) and preserved larger setbacks for larger building types. The council also accepted a planning commission suggestion to exempt single, estate residential lots from architectural-style requirements when a single custom home is proposed.

Council members discussed trade-offs between preserving neighborhood form and enabling small-lot for-sale product to meet market demand. Council Member Stone said the changes could help foster for-sale housing and preserve institutional memory for multi-year projects; other members pressed staff on fire-safety and density implications in high-fire-severity zones.

Council moved to remove section 3.5 (ADU design) from the ordinance for separate consideration and introduced Ordinance No. 635-26 (amending Murrieta Municipal Code Titles 16.08 and 16.16). The motion to introduce the ordinance, including the staff-recommended sliding-scale setback policy and the ADU removal, carried unanimously (4-0). The second reading and potential adoption are scheduled at an upcoming meeting.

The ordinance packet and the staff presentation (including illustrations of small-lot configurations and thresholds for additional design features) will be posted with the next meeting materials. Staff said they will return with finalized ADU guidance and clarified applicability for high fire severity areas.

Council noted the decision is intended to balance design quality and market feasibility while preserving opportunities for discretionary review where appropriate. The council also asked staff to monitor outcomes and report back if the standards are producing unintended rental-product conversions instead of the intended for-sale products.