ST. CHARLES COUNTY — The building frenzy in St. Charles County’s “fastest growing area” could soon transform more than 200 acres of farmland west of Lake Saint Louis into a sprawling 470-home subdivision.

Plans for the new project, “Trailside Farms,” include 383 single-family homes, 87 townhomes, a trail system, a baseball field, an outdoor skating rink and a War of 1812 memorial, county staff say.

The St. Charles County Planning & Zoning Commission is poised to hear the proposal next week.

If approved, Trailside Farms would be the fifth subdivision built or under construction since December 2023 along a two-mile stretch of Highway N west of Lake Saint Louis in rural St. Charles County. County Executive Steve Ehlmann calls it the “fastest growing area” in the county.

The four other sub

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