Jefferson County, MO HOA Rules: Board Governance (2026)

610 on 4-2-2008, every subdivider in unincorporated Jefferson County must form or cause to be formed a property owners' association before selling any lot. The association must be established in recorded subdivision restrictions, and membership is mandatory for each owner of real property within the subdivision, not optional or opt-in. The association owns and maintains any common open space, subdivision entrance structures, stormwater system, or recreational ground shown on the final plat, and is responsible for property taxes on that common ground, for liability insurance, and for other duties of ownership.

If the association later wants to change the area of common ground, the County's Planning Division must approve the change first. Before final plat approval, the subdivider must file a declaration of restrictions and a declaration of the property owners' association, plus supply the Planning Division with the articles of incorporation (or organization) and a full set of bylaws. Those declarations must, at minimum, regulate property maintenance, maintenance of common facilities, and trash removal. The recorded set of covenants and restrictions must also be submitted to the Planning Division before a building permit is issued.

This governance structure applies only to the unincorporated area of the county; incorporated cities like Arnold, Festus and De Soto administer their own subdivision and HOA rules separately.