Planning commission recommends preliminary approval for Back 40 subdivision with conditions

The Teton County Planning and Zoning Commission recommended approval Thursday of the preliminary plat for the Back 40 subdivision, asking the developer to supply several outstanding items before the Board of County Commissioners acts.

The commission’s recommendation covers a revised plan that reduces the original five-lot concept to four lots of about 10 acres each, retains the developer’s proposed two-access design off 1000 West, and includes six conditions staff and commissioners said must be satisfied ahead of final review.

Why it matters: The commission’s action moves the project forward but conditions its approval on clarifying legal and engineering details that affect emergency access, road construction standards and irrigation interests. Commissioners said they want a complete record before the board grants preliminary plat vesting rights under the Teton County Land Development Code.

Staff presentation and road standards The planner reported that the application originally proposed five lots of roughly eight acres; after concept review the applicant revised the layout to four roughly 10‑acre lots and removed the property from the City of Victor area of impact. Staff said they reviewed the application under the zoning that applied at the time of submission and under the Teton County Land Development Code (LDC).

County public works staff and the county engineer reviewed the road proposal and concluded the segment of 1000 West that serves the site functions like an interior subdivision road in this location. Staff told commissioners the county engineer was comfortable with the two shared access points proposed, which are separated by about 300 feet on the plan, provided the roadway improvements meet county standards and that there is adequate turnaround at the northern end of the property.

Outstanding items and conditions Commissioners and staff flagged several outstanding submittals. Specifically they asked the applicant to provide: a current stamped cost estimate for required improvements (the earlier estimate dated 2024 reflects a prior five‑lot layout), a response or letter from the applicable irrigation company (listed on the plat as Fox Creek Irrigation Company after commission correction), and a plan for a subdivision identification sign and mailbox cluster. Staff noted the property contains an existing pond that must be inspected and certified annually; existing covenants (CCRs) allow joint use of that pond for fire control.

Applicant comment Taylor Cook of Nelson Engineering, speaking for the applicant, said utilities and much of the road and utility construction already exist from nearby subdivisions, which is why the current design removes the interior subdivision road from the earlier proposal. Cook said a subdivision sign could be added and that, historically, signs have cost roughly $3,000 on similar projects.

Commission deliberation and motion Commissioners debated whether the outstanding items were “deal stoppers” or minor items that could be conditioned to be resolved before the preliminary plat goes to the Board of County Commissioners. After discussion the commission voted to recommend approval of the preliminary plat as submitted 04/17/2025, with the staff report’s six conditions of approval and the changes directed in the meeting (notably replacing the irrigation company reference with Fox Creek Irrigation Company and adding clearer wording in a condition about required cost estimates for the turnaround, mailbox cluster and signage).

What’s next The commission recommended the preliminary plat to the Board of County Commissioners; staff advised that the outstanding items should be provided before the county schedules the plat for consideration by the board. The commission also asked staff to ensure the development agreement and CCRs receive legal review prior to final platting, per LDC requirements.

Ending The recommendation does not authorize construction; it asks the applicant to return with required documentation and to meet the six conditions before the Board of County Commissioners considers preliminary plat approval.