Residential Construction Permit
How Do I Apply?
Online: Please visit the Building Construction Permit section of our Citizenserve Citizen Access Portal.
When is a Residential Construction Permit Required?
A residential construction permit is required whenever a new residence is being built on a lot. It is also required for mobile homes moving onto either private lots or into a park, as well as when building a foundation on a lot with the plan being to build a residence on that foundation at a later date.
Types of Residential Construction Permits
- Detached Single Family
- Attached Single Family (condos & townhouses)
- Modular Home
- Mobile Home – Private Lot
- Mobile Home – In Park
- Multi-Family Residential (apartment complex)
- Display Home (not for occupancy)
What Will I Need to Submit?
- Building plans (PDF format preferred) showing footing/foundation detail, framing member sizes, header sizes, door and window location and sizes, truss or rafter design, flooring detail, and any electrical or plumbing. Also include floor plan, wall cut detail, elevations, and any applicable stair details.
- A detailed plot plan (PDF) showing the location of your home and proposed building or structure on the lot. Show distances to property lines and keep in mind that structures may not be located over easements or septic systems.
Fees & Plan Review
Building Permit Fees (PDF)
The plan review process typically takes about 10 working days. When the permit is ready, you will be notified via email that the permit is ready for pick up as well as the final amount of the permit fee.
Building permit fees are based on cost of construction. At the time of application, you will provide us with your estimated cost of construction and our plan reviewers will calculate an estimated cost of construction per ICC Building Safety Journal. The higher of these two estimates will be multiplied by 0.73%; this amount, or the minimum permit amount, whichever is higher, is the building permit fee that will be charged. There may be other fees associated with your permit, such as floodplain permit fees, land disturbance fees, and other fees as applicable.
At least one inspection will be required. When the permit is issued, the necessary inspections required will be listed on your permit card. At the inspector's discretion, some inspections may not be applicable to the particular permit in question. The inspector will note those inspections are "N/A" at a later date.
Inspections must be called into the office by 3 p.m. the business day prior to your requested inspection date. To schedule your inspection, call 636-949-7345. If it is necessary to cancel or change your inspection, please do so as soon as possible. Also, please remember to post your permit so that it is visible from the street.
Please contact the St. Charles County Building and Code Enforcement Division at 636-949-7345 or email@example.com.