Council approves variance for Providence Road subdivision to use T-turnaround; allowance added for possible underground detention

The Alpharetta City Council unanimously approved a variance on June 23 allowing a T-shaped turnaround in lieu of a cul-de-sac for a proposed seven‑lot single-family subdivision on about 3.25 acres at 12725 and 12735 Providence Road.

Planning staff said the T turnaround would square up two end lots, reduce impervious surface compared with a cul-de-sac, and would not increase the number of lots. The applicant’s engineer showed the design meets R‑15 development standards and stated the Fire Marshal had reviewed the design and found it acceptable. Resident questions at the community meeting had focused on green space, stormwater runoff, off-site trees and visibility at the new road entrance.

Council discussion focused on stormwater management. Staff said the city’s stormwater policy manual generally discourages underground detention in residential subdivisions because of long-term maintenance concerns, but council members and the applicant’s engineer discussed it as a possible option. The applicant’s engineer (Barry Dunlop) said he prefers underground detention for the reduced surface impact and that he would reassess cost and feasibility with the developer; the council approved a friendly amendment to allow the applicant the option to provide underground detention subject to staff approval so the applicant would not need to return for a separate variance if an underground system is selected.

Staff recommended approval subject to five conditions addressing home style, landscaping, building setbacks and off-site tree protection. The variance passed unanimously.