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Planning department previews Great Seneca master plan amendment, proposes life-sciences overlay to boost housing and connectivity
Summary
Planning Board Chair Artie Harris and Planning Director Jason Sartorius briefed the County Council on the Great Seneca master plan amendment, a multi-year effort to reconfigure roughly 4,000 acres in the I-270 corridor. Key proposals include a life-sciences overlay to incentivize housing and public benefits, a finer street grid, repurposed travel lanes for multimodal use and a proposed place-management organization; a virtual public hearing and tour were scheduled for the following day.
The Montgomery County Planning Board and Planning Department on June 11 presented the Great Seneca master plan amendment, emphasizing strategies to strengthen the life-sciences economy, expand housing, and improve multimodal connections in the I-270 corridor between Gaithersburg, Rockville and Washington Grove.
Planning Board Chair Artie Harris opened the briefing, noting the board recommended the amendment on April 25 and transmitted the draft on May 10. "The plan envisions transforming roadways from barriers to vital elements of the public realm," he said, and described the exercise as a long-term, place-based effort.
Planning Director Jason Sartorius said the amendment focuses on economic competitiveness and housing production, and will advance key aspects of Thrive Montgomery 2050. Project lead Maureen Hill outlined the plan's main recommendations: encourage compact mixed-use development in the Life Sciences Center, introduce a fine-grain street grid, repurpose travel lanes for transit and public space, and address on-site energy and stormwater resilience given the lab-intensive nature of many buildings.
A proposed Great Seneca Life Sciences Overlay Zone (a zoning text amendment scheduled for later that afternoon) would standardize uses across the Life Sciences Center, allow development bonuses (including heights up to 200 feet and increased density tied to public benefits), and create incentives for affordable and market-rate housing as well as small- and medium-sized lab spaces.
Hill described extensive outreach for the plan: transportation modeling, a real-estate compatibility study, Urban Land Institute input, and a canvassing effort that reached roughly 5,000 residents in the plan area. That outreach identified recurring resident concerns about transit connectivity, housing affordability and access to recreational space; the presentation said place management and better signage/programming of privately owned public spaces could help.
The council was told a public tour and a virtual public hearing would take place the next day and that the plan will enter the committee work-session process with Housing, Planning and Parks. Staff recommended implementation tools such as an overlay zone, place management organization, targeted infrastructure projects and removal of outdated staging requirements that had restricted development under the earlier plan.
The council thanked planning staff for extensive outreach and said members looked forward to further committee review and the public hearing.
