Marion County commissioners discuss using designated PSA nodes, density tools to direct growth

Marion County commissioners and planning staff discussed draft comprehensive-plan strategies to concentrate future growth into designated “PSAs” — areas where utilities and road access could support higher-density, mixed-use development — during a March workshop.

The presentation, led by Ken Weirock of Growth Services and planning staff Blair Knighting and Christopher, laid out population projections, permit trends and maps of developable, platted lots and existing utilities to make the case for targeted nodes of denser development inside and adjacent to already built neighborhoods. “Density is not a bad word. It's not the enemy,” Weirock told the board, adding that, if managed properly, density could “be a tool” that benefits the community, developers and region.

The county’s planning staff said Marion County’s 2050 population forecast used the mid‑point between a medium (526,500) and high (650,300) scenario — a working projection of 587,900 people — and showed recent permit activity with a sharp uptick in buildings of 10 units or more. Staff reported a current capacity estimate of about 87,000 dwelling units countywide based on existing land‑use designations and development rights and noted a modeled “surplus of 20,000” units in a high‑maximum scenario and a modeled “deficit of 48,000” in a no‑new‑housing baseline; staff cautioned those figures are tools and not firm predictions.

Why it matters: Commissioners emphasized the county must steer growth where infrastructure exists to reduce pressure on rural areas, protect the county’s character and manage transportation and utility costs. Staff proposed PSAs — defined in the draft as “an area hub where a concentration of infrastructure is in place or can be feasibly in place, making it an efficient, effective location to encourage growth and development, especially a mix of uses” — as one policy tool to direct mix, scale and design of new development.

Staff showed three initial PSA candidates, including areas near Marion Oaks and Silver Springs Shores, that the presentation said have vacant platted lots and nearby centralized water within 400–500 feet, surrounding residential populations and transport access. Staff suggested PSAs could be regulated by PSA‑specific dimensional and design standards, density targets and sidewalk/park requirements — without changing the county’s overall land‑use categories — and recommended a program of community engagement before formal designation.

Commissioners pressed staff for concrete data and implementation details. Commissioner Curry called for clarity on infrastructure readiness and said the county should “get more current on our transportation infrastructure before you could start throwing more density in these PSA areas.” Vice Chairman Zalick asked for empirical examples showing “internal capture” — the share of trips retained inside a node — and data on parking and accessibility. Commissioner Stone said staff should avoid framing examples as “Orlando” development and insisted any plan protect the county’s rural character.

Staff agreed to return with more detailed policy language, recommended density ranges for PSAs (including data points such as the 7 units/acre threshold cited in the presentation that research shows can support a small corner store), comparisons to completed projects, and examples of implementation tools such as transfer‑of‑development‑rights (TDR) or density bonuses. The board asked staff to propose how community meetings would be organized and to provide technical analysis — e.g., internal‑capture studies, example parking/load assumptions, and localized infrastructure capacity — before any PSA designations.

The meeting included questions about alternative models and examples from other counties. Weirock and staff showed examples from Baldwin Park and Horizon West in the Orlando area to illustrate how a mix of 4–24 dwelling‑unit densities can be combined and stepped down into surrounding single‑family neighborhoods. Commissioners discussed balancing densification with farmland and open‑space preservation: “A good rural planning plan is having a good urban plan and vice versa,” one commissioner said.

Next steps: Staff said it would return with draft comp‑plan policy text and additional data at upcoming workshops, including an April 21 session that had already been scheduled. No formal votes were taken on changes to the comprehensive plan at the workshop.