Planning commission recommends approval of Northern South Park Area 1 master site plan with six conditions

The Teton County Planning Commission on March 10, 2025, voted 3–1 to recommend approval of the Northern South Park (NSP) Area 1 master site plan, forwarding the application to the Board of County Commissioners with six added conditions covering transportation mitigation, park exaction layout, wildlife permeability and final recordation language.

The recommendation matters because the master site plan establishes development entitlements for up to 600 residential units in Northern South Park’s Area 1 and sets the framework for later development plans that will determine where housing, parks and roads will be built. Commissioners and staff said they sought stronger assurances about how traffic impacts, park acreage and wildlife movement will be addressed as the project proceeds.

Senior Planner Chandler Windham, who presented staff’s analysis, said the master site plan is “a conceptual proposal. It's like a sketch plan, but it is binding.” Windham explained that the recorded master site plan would entitle density in the NSP incentive overlay and that later development plans must be “consistent with the master site plan.”

Transportation mitigation and condition 1

A central point for commissioners was a revised condition about transportation mitigation. The commission’s amended condition requires the applicant, before the first development plan, to collaborate with Public Works staff and obtain the county engineer’s written approval of a structured, block-by-block list of contributions toward traffic management, off‑site infrastructure improvements or financial contributions consistent with the West Jackson Transportation Plan. The condition explicitly requires the list to identify responsible entities, account for construction impacts (including construction traffic), include realistic benchmarks and performance monitoring, and allow later adjustment based on final unit counts and monitoring data to be approved by the Board of County Commissioners at development plan.

Commissioner Weiss said he asked staff to change the term from “consult” to “collaborate,” adding that the word “collaborate tightens that up” and ensures the county engineer performs a formal review. County Engineer Amy Ramage and other public‑works staff participated in drafting the condition and supported adding construction‑traffic language after commissioners raised concerns about heavy equipment and truck traffic on High School Road.

Parks, school exactions and the 12‑acre requirement

Staff and Parks and Recreation disagreed with the applicant about what should count as park exaction land. Windham summarized that exactions are calculated at development plan based on unit counts and that LDR Division 7.5 caps what can be required. The staff report and Parks and Recreation review noted that the neighborhood plan envisions a central park of roughly 3–5 acres supplemented by smaller “pocket parks.” The applicant’s concept plan included multiple small park parcels and pathway corridors that together sum to more than the 12 acres required if all 600 units are built; Park 1 on the concept plan is shown as 4.1 acres.

Steve Foster, interim director of Teton County Parks and Recreation, told commissioners: “We are saying that what they call parks, the Greenway corridors, 2 3 4 6 7 8, have no public park function, and no public park development opportunities. It's a green space. We were happy to call it open space, but ... that is the difference.” Parks staff sought a single, contiguous community park of about 3.5 acres in the north half of NSP and urged limiting the portion of narrow pathway corridors that count toward park exaction acreage to a 30‑foot corridor.

Commissioners asked staff to reconcile the neighborhood plan’s open‑space checklist (which favors many smaller, proximate parks and wildlife permeability) with Parks and Recreation’s maintenance and function concerns. Windham noted the county may accept private parks as exactions only under limited conditions and that final dedication timing and acceptability are decided at development plan and by the Board of County Commissioners.

School exaction comments

Windham also relayed that the Teton County School District commented that the state requires a minimum of 10 acres for an elementary school, but Windham said there is not a legal nexus under the LDRs to require additional school‑exaction acreage beyond the minimum formulas in Division 7.5; the minimum acceptance for a school or park exaction is one acre per the LDRs. Windham added that school exaction land is flexible in permitted uses, listing “school facilities, support facilities, open space, recreation areas and housing for employees and their families.”

Wildlife permeability and parks layout

Multiple commissioners and county review memos flagged wildlife permeability as a priority. Commissioners pressed staff and the applicant on ensuring open spaces do not “dead end” into developed blocks and on how parks and block design together will allow seasonal and daily movement of wildlife across the site. Windham told commissioners the neighborhood plan and incentive overlay require open spaces and pathways to be designed “to promote wildlife permeability.”

After discussion the commission added a condition directing that future development plans demonstrate ample wildlife permeability on the eastern and southern boundaries through passive parks and permeability between housing units (for example, continuity between unfenced backyards), and asked that perimeter fences meet Teton County wildlife‑friendly fence specifications where fencing is necessary. Applicant representatives said they had met with Wyoming Game and Fish and that their design intent was to funnel wildlife southward toward agricultural lands to reduce human‑wildlife conflicts; they warned that a substantially different planning mandate could require extensive redesign.

Geotechnical study and other technical review

Commissioner Kelly asked about geotechnical work. Windham said the applicant first referenced the Porter Ranch geotechnical report but later submitted a supplement from a Wyoming‑licensed engineer that staff found sufficient to meet the LDR requirement for an Area 1 geotech study.

Recordation, consistency and next steps

Windham emphasized that the master site plan, once recorded, entitles the density in the incentive overlay and that approved conditions would be binding on future development plans consistent with the recorded master plan. The commission also added a condition asking that any language on concept exhibits that declares an element “not legally binding” be removed from the recorded master site plan; the applicant agreed to strike the nonbinding disclaimer from Exhibit A and to leave the exhibit as illustrative only.

Formal action and vote

Commissioner Weiss moved to recommend approval of MSC‑2024‑0037 (Northern South Park Area 1 master site plan, submitted Oct. 30, 2024; updated Jan. 17 and Feb. 14, 2025) with the planning director’s findings and the six added conditions. The motion was seconded and passed by a recorded vote of three in favor, one opposed. The votes recorded in the meeting minutes were: Commissioner Weiss — yes; Commissioner Maramsev — yes; Commissioner Kelly — yes; Commissioner Lawrie — no. The commission’s recommendation advances the application to the Board of County Commissioners; staff indicated the item is scheduled for an upcoming BCC meeting.

What the conditions require (summary)

1) A revised, structured block‑by‑block list of transportation contributions approved in writing by the county engineer; list must include responsible entities, construction‑traffic mitigation, benchmarks and monitoring and be adjustable based on final unit counts and monitoring and approved by the BCC at development plan. 2) Dedication of the required east‑west connector easement through Area 1 prior to recording of the master site plan, consistent with the LDR requirement for that segment. 3) All future blocks must demonstrate compliance with the LDR standard limiting internal block face size at development plan. 4) Prior to recordation, revise the concept parks plan so each park exaction parcel meets the minimum one‑acre size requirement; pathway segments (Parks 6, 7 and 8) may be counted toward exactions only if accepted by the Board of County Commissioners and limited to a 30‑foot corridor, with any acreage reduced from those corridors relocated to other parks (Park 1 or Park 5 preferred). 5) Remove “not binding” disclaimers from materials that will be recorded with the master site plan so that recorded documents reflect the county’s definitive master plan and the plan’s conditions. 6) Future development plans shall demonstrate ample wildlife permeability on the eastern and southern boundaries through passive parks and permeability between housing units; where perimeter fencing is required, fence designs must align with Teton County wildlife‑friendly fence specifications.

Next steps and timetable

The planning commission’s recommendation moves the application to the Board of County Commissioners for their review and final decision; staff indicated the item will be scheduled for a BCC hearing in the coming weeks. Commissioners and staff repeatedly noted that many implementation details — exact phasing, cost‑sharing mechanics for off‑site transportation projects, and how exactions will be conveyed block by block — will be hammered out during subsequent development‑plan reviews and through agreements the applicant and county finalize prior to recording and development plan approvals.

Ending

The commission’s action sends the master site plan and six recommended conditions to the Board of County Commissioners for a final decision that will govern how the NSP Area 1 project proceeds toward any future construction and subdivision.