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Commission staff backs conditional variances for five-lot subdivision that includes detention and setback changes
Summary
Staff recommended conditional approval for a five-lot subdivision proposal that requests a reduced stream buffer for construction of a stormwater detention facility, increased impervious coverage methodology for undersized lots, and front/rear setback reductions; conditions include replanting to buffer standards after detention construction and a licensed-engineer letter confirming erosion controls before preconstruction inspection.
Staff introduced a five-lot subdivision application that would reconfigure lots to expand two small lots using area from a larger lot and would require multiple variances: reducing the stream buffer from 75 feet to 25 feet for grading the stormwater detention facility, allowing higher impervious coverage on undersized lots using the city’s standard methodology (up to 3,500 square feet in some calculations), and reducing front and rear setbacks on several lots to accommodate buildable areas.
Staff explained the red/blue buffer map on the site plan and said limits of disturbance are intended only for grading the detention facility. Staff also explained an alternative site plan that would remove one lot (lot 4) but that the applicant contends that removing a lot would make the project infeasible to build to public street standards.
Commissioners asked whether combining the five lots in right-of-way calculations would materially change the overall impervious percentage; staff calculated the total would likely fall under 35% when viewed collectively because of a very large empty lot included in the block, but the application was still presented as variances based on existing lot lines. Staff recommended conditional approval and proposed five conditions, including replanting buffer standards after detention construction.
Staff clarified stormwater maintenance requirements and added a seventh recommended condition: "Applicant owner shall provide a letter sent by a licensed engineer confirming all erosion and sediment controls are correctly installed for the limits of disturbance as shown on the approved plan prior to the passage of the preconstruction inspection." That condition is intended to address neighbor concerns about proper installation and long-term maintenance of detention and associated stormwater infrastructure.
No formal vote is recorded in the transcript. Staff noted that required stormwater maintenance agreements are not optional and will be executed per city requirements; commissioners pressed on feasibility, long-term maintenance responsibility and whether a homeowner could walk away after partial construction.
Next steps: Staff will proceed with the conditional recommendation and the added licensed-engineer letter requirement; commissioners asked staff to verify that recorded maintenance agreements and replanting commitments are enforceable and recorded as required.
