Do I need a permit for shed or accessory structure in Wildwood?

It depends. Whether shed or accessory structure needs a permit in Wildwood comes down to the details of your project.

Missouri has no statewide residential building code; whether a permit is required depends entirely on the city or county code that covers the address. The IRC 200 square foot shed exemption does not govern statewide; each city or county sets its own size threshold, if any. Many rural Missouri counties have not adopted a county building code, and a county code applies only outside city limits; inside a city, the city's own code governs. In NFIP communities, building in a mapped floodplain can require a floodplain development permit even where no building code applies. A shed that will have electricity, plumbing, or a permanent foundation falls outside the usual small accessory building exemption, which generally covers simple unpowered structures only. Electrical and plumbing work each normally require their own permit and inspection even when the structure itself would have been exempt, and many jurisdictions require a licensed electrician or plumber to pull them. Zoning setbacks, height limits, and lot coverage are reviewed separately from the building permit, so confirm placement with your local department before the shed is delivered or poured.