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Council grants Alta Vita riparian-setback variance with green-infrastructure condition
Summary
After reopening the hearing, council approved a reduced riparian-setback variance for the Alta Vita senior housing project with a condition: the developer must add an additional 25% green-infrastructure improvements beyond the revised planting plan to mitigate heat-island effects and reduce runoff.
Longmont City Council on Oct. 28 conditionally approved a variance to the city’s riparian setback rules for the Alta Vita senior housing development after the applicant presented a revised site plan and enhanced landscaping.
What changed: The applicant revised earlier plans to shift buildings north, so the proposed building footprints sit 25 feet north of the existing bike-path edge (the applicant explained the bike-path offset creates a surveyable and fixed baseline). The revised plan adds native trees, pollinator gardens and more shrubs in the buffer area along Dry Creek. City natural-resources staff and the project’s sustainability evaluation system (SES) score supported the revised plan, concluding the measures would produce a net environmental benefit for the creek corridor under the SES protocol.
Council action and condition: Council approved the variance and attached a condition requiring the developer to provide additional green infrastructure equal to 25% more than the revised planting proposal. The council and staff said the condition is intended to further mitigate heat-island effects and improve stormwater retention.
Why it matters: The decision balances two goals: protecting riparian and floodplain functions while permitting infill senior housing that the applicant says the community needs. Staff emphasized the SES scoring process exists precisely to permit nuanced, site-specific evaluation rather than a single fixed numeric cutoff.
Outcome: Council voted to approve the variance with conditions. Staff will record the surveyable setback (25 feet north of the bike-path edge) in the final approval documents and inspect required plantings during construction.
