Boulder planning board backs rezoning for East Boulder 300‑unit project, approves form‑based code review with conditions

Dec 4, 2025

The Planning Board recommended City Council rezone two East Boulder parcels at 5501 and 5505 Arapahoe Avenue to MU‑4 and approved a related form‑based code application for a five‑story, 300‑unit mixed‑use project, granting several exceptions and conditions (including requiring 12‑ft shop base ceilings and written findings for a streetscape plaza exception).

The full story

The City of Boulder Planning Board voted to recommend that City Council rezone 5501 and 5505 Arapahoe Avenue to MU‑4 and, in a separate decision, approved the developer’s form‑based code application for a five‑story mixed‑use building containing 300 dwelling units and about 2,918 square feet of retail. The rezoning recommendation passed unanimously; the form‑based code approval passed 4–3 after extended questioning about design, open space, and exceptions.

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