St. Louis County, MO Parking Rules: EV Charging (2026)
Key Facts
- Governing code
- Ch. 1119 SLCRO § 1119.030
- Trigger threshold
- Projects with more than 30 parking spaces
- EV-ready requirement
- 10% of required spaces
- EVSE-installed requirement
- 2% of required spaces
- Applies to
- Unincorporated St. Louis County only
- Penalty
- Up to $500 per day, per violation
- Effective
- 90 days after 2021 County Executive approval
Summary
New construction, major remodels, and parking-lot alterations in unincorporated St. Louis County that create more than 30 parking spaces for offices, stores, factories, institutions, and similar occupancies must set aside electric vehicle charging capacity under Chapter 1119, adopted in 2021. Ten percent of the required spaces must be wired 'EV ready' and two percent must have a working charger installed, with violations punishable by a $500-per-day fine.
1119.030 - Electric Vehicle Charging Station Requirements. —l. As provided herein, electric vehicle charging station requirements shall apply to all new construction and major remodel when the required parking, existing or new, to serve the new construction or major remodel, exceeds 30 parking spaces. In addition, the electric vehicle charging station requirements are applicable to parking alterations, not associated with any new construction or major remodel, that exceed 30 parking spaces. The number of electric vehicle charging stations, in accordance with this chapter, shall only be applicable to A, B, E, F, H, I, M use/occupancies as defined by the Building Code of St. Louis County Chapter 1115 and shall be as follows: (a)Ten (10) percent of the otherwise required parking spaces shall be electric vehicle ready spaces.(b)Two (2) percent of the otherwise required parking spaces shall be EVSE spaces. When the calculation of the number of spaces required results in a fractional parking space, the number required shall round up to the next whole number. Loading spaces shall not be included in such calculation.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 85 | Traffic: Supplement 80).
Full Breakdown
St. Louis County's Electric Vehicle Charging Code, Chapter 1119 SLCRO, took effect ninety days after the County Executive's approval of Ordinance No. 28256 in 2021 and by its own terms applies only 'in the unincorporated section of St. 010. 030 triggers the requirement whenever new construction, a major remodel, or a standalone parking-lot alteration serves more than 30 parking spaces for Building Code use groups A, B, E, F, H, I, or M, covering most retail, office, assembly, educational, and light industrial projects. 020 definition, and 2 percent must be full EVSE spaces with the charging equipment itself installed; any fractional space rounds up, and loading spaces never count toward the total.
030(2) exempts a long list of use types outright, including fueling stations, restaurants, bars, bowling alleys, banks, car washes, print shops, funeral parlors, ambulatory care and residential care facilities, K-12 schools, and any parking that is not otherwise required, not designated, or sits in the public right-of-way. 020 definitions of EVSE, EVSE space, electric vehicle ready, major remodel, new construction, and parking alteration to decide whether a given project trips the 30-space threshold.
Violations & Fines
Section 1119.050 makes any violation of the Electric Vehicle Charging Code punishable, upon conviction, by a fine of not more than $500.00, with each day the violation continues charged as a separate offense. Because the requirement attaches at building permit and site-plan review, noncompliant projects are typically flagged before a certificate of occupancy issues rather than caught after construction is complete.
Frequently Asked Questions
What triggers St. Louis County's EV charging requirement?
How many EV charging spaces does a qualifying project need?
Does this rule apply inside cities like Chesterfield or Ballwin?
What is the penalty for skipping the EV charging requirement?
Sources & Official References
Other rules in St. Louis County
Compare St. Louis County to another location·View the Missouri parking rules overview
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