A permit is required for basement finish projects if:
Any walls are being constructed
Sheetrock is being installed
See the basement finish handout (PDF) for specifics for egress window requirements and the checklist for requirements before applying. If you are putting a bathroom in the basement you are required to obtain a building, plumbing (PDF), electrical (PDF), and possibly a mechanical (PDF) permit. All gas work must be done by a contractor who is licensed for HVAC with the City of Maplewood.