Permanent infrastructure needed during interim grading
Permanent storm water detention/management facilities (commercial/industrial site plans only)
Subdivision Improvements Cost Estimate
An itemized cost estimate is required to establish the Subdivision Improvements Performance Guaranty amount. This amount must cover the costs for all public improvements maintained by the county (public streets and storm sewers) or private improvements maintained by the homeowners (private streets, storm sewers, detention and storm water management facilities).
The cost estimate must include, but is not limited to, the following costs:
Earthwork (grading, clearing, demolition, etc.)
Retaining walls, if part of road embankment
Street and miscellaneous pavement
Sidewalks (adjacent to common ground and handicap ramps)
Street signs, guard rail, and other ancillary items
Storm sewer systems, bridges, and culverts
Stream/Storm Water channel improvements
Storm water detention and management facilities
Please contact the St. Charles County Development Review Division at 636-949-1814 or Email Development.