Building Fees & Impact Fees in O'Fallon, [object Object]
Total government fees for new construction in O'Fallon, St. Charles County, MO. Includes impact fees, utility connections, permits, and assessments.
$10,100
Estimated Total Fees — Standard Single-Family Home
Based on typical 2,000 sq ft home, $300K construction value. Actual fees vary by project.
Fee Breakdown
| Fee Type | Amount | Basis |
|---|
| Building Permit Fee |
0.5% |
Of construction value |
| Plan Review Fee |
0.25% |
Of construction value |
| Water Connection Fee |
$3,500 |
Flat fee |
| Sewer Connection Fee |
$2,800 |
Flat fee |
| Stormwater Fee |
$550 |
Per lot |
| Parks & Recreation Fee |
$1,000 |
Per dwelling unit |
Important Notes:
- O'Fallon charges a park improvement fee per dwelling unit for new residential development.
- No traditional transportation impact fee.
- Water and sewer provided by Missouri American Water and Metropolitan St. Louis Sewer District.
- Estimate based on $300K construction value.
Sources & Accuracy: Fee data sourced from O'Fallon published fee schedules
(effective July 2025).
Data confidence:
Partial.
Official source:
View Fee Schedule
Fees change periodically. Always confirm current fees with the city building department before budgeting.