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Committees adopt green‑roof, rooftop design and approval standards for Dock Street area
Summary
Alderman Savage’s Amendment 5, adding green‑roof definitions, design and maintenance standards and limits on enclosed habitable rooftop structures in the Dock Street historic overlay, was recommended favorably by both committees after staff said standards were technically sound and a drafting change was made from 'covered' to 'enclosed'.
The Rules and Environmental Matters committees recommended favorably Amendment 5 to O‑1425, which establishes green‑roof performance standards and rooftop accessory‑structure design rules intended primarily for the Dock Street historic overlay and downtown downtown overlay areas.
Sponsor Alderman Savage said the amendment incorporates Planning Commission recommendations and adds specificity on green‑roof definitions, drainage and maintenance, and on accessory structures such as guardrails, screenings and cladding. Planning staff — including Chris Kubiak and Eric Leschinsky — told the committee they found the amendment "technically sound" and workable for review and enforcement.
Early in the discussion Deputy City Manager Jackie Guile flagged mandatory wording in a draft passage that read a green roof 'shall' be required for certain properties. Committee members and staff agreed to clarify the language to preserve applicant flexibility where intended and to ensure the provision applied only where the draft intended it to.
Staff also recommended changing a prohibition phrase that would have banned 'covered' accessory structures, because that phrasing could bar common shading or pergola elements used for outdoor dining. The committee accepted a motion to change the draft text to prohibit 'enclosed' accessory structures that create habitable rooftop rooms, thereby allowing unenclosed shade structures while preventing fully enclosed habitable uses (for example, hotel rooms or permanent enclosed dining rooms on rooftops).
The amendment includes: a green‑roof definition and performance standards (stormwater retention, thermal performance, reversibility for historic fabric, visibility limits from public rights‑of‑way), drainage and maintenance requirements with inspection responsibilities, and rooftop accessory structure rules covering materials, guardrails, visibility minimization and prohibitions on enclosed habitable uses. Committees also added an applicability statement making clear the Dock Street standards are in addition to citywide rooftop dining standards (2164‑540).
Both committees recorded voice votes in favor of Amendment 5 and forwarded the amendment with those clarifying edits to the full council as part of O‑1425.
