Marysville Planning Commission scheduled first round of middle housing and ADU code amendments for March 25 discussion

What the records say

The Marysville Planning Commission's March 25, 2025 agenda listed an old-business item titled 'Middle Housing and Accessory Dwelling Units - Part 1 of Code Amendments,' marked 'Discussion item only,' meaning no vote or final action was scheduled at that meeting. ¹ The attached staff memo describes the proposed first batch of amendments: consolidating the city's four single-family residential zones (R-4.5, R-6.5, R-8, and WR-R-4-8) into a single Neighborhood Residential zone; amending parking requirements for middle housing; and significantly reorganizing accessory dwelling unit standards, including eliminating the owner-occupancy requirement, prohibiting use of an ADU as a short-term rental, capping ADU size at 1,000 square feet gross floor area or 50 percent of the house's total floor area (whichever is greater), and allowing a reduced 10-foot rear setback for one-story ADUs. ¹ The memo states staff anticipated presenting a second package of amendments at the April 8 Planning Commission work session. ¹ The supplied records cover the meeting as scheduled and the materials prepared for it; they do not establish the outcome of the March 25 discussion.

• The March 25, 2025 Planning Commission agenda listed 'Middle Housing and Accessory Dwelling Units - Part 1 of Code Amendments' as an old-business item marked 'Discussion item only,' with no vote scheduled. ¹
• The proposed amendments would consolidate the city's four single-family residential zones (R-4.5, R-6.5, R-8, and WR-R-4-8) into a single Neighborhood Residential zone, using the R-6.5 dimensional standards. ¹
• The proposed ADU amendments would eliminate the owner-occupancy requirement, prohibit ADUs as short-term rentals, cap ADU size at 1,000 square feet gross floor area or 50 percent of the principal dwelling's total floor area (whichever is greater), and allow a reduced 10-foot rear setback for one-story ADUs. ¹
• The memo states staff anticipated presenting a second package of middle housing amendments at the April 8 Planning Commission work session, covering additional definitions, site and architectural design, unit lot subdivisions, and comprehensive plan amendments. ¹

Why it matters

These amendments would shape what can be built in Marysville's residential zones: the proposal would consolidate the city's single-family zones into one Neighborhood Residential zone, change middle-housing parking requirements, and loosen several ADU rules, including removing the owner-occupancy requirement and banning ADU short-term rentals. ¹ Because the March 25 item was discussion-only, residents tracking these rules need later records to see whether the proposals advanced toward a public hearing or City Council adoption. The supplied records do not establish the meeting's outcome.

What changed / what's next

• No adopted change is documented in the supplied pre-meeting record; the item was scheduled for discussion only, and the code amendments described in the memo were proposals, not adopted rules. ¹
• The supplied records do not establish the outcome of the March 25 discussion or any vote on the amendments.
• The memo states a second package of middle housing amendments was anticipated at the April 8 Planning Commission work session. ¹
• The proposals would ultimately require Planning Commission recommendation and City Council adoption by ordinance; no such action is documented in the supplied records.
• The available records do not establish the meeting's outcome.