Zoning, building permits and septic rules in Alexandria, Missouri
Alexandria is a city in Clark County, Missouri. Septic permits inside Alexandria come from the county and state together. 3 rules below are quoted from official sources and independently re-checked, most recently on November 5, 2026. Rules for unincorporated land are on the Clark County page.
Answers from the rulebook for Alexandria
Rules another office applies inside Alexandria
Alexandria does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Who permits septicMixed (with conditions)
Onsite wastewater systems serving property inside Alexandria city limits when an onsite system is used.
A city or county may adopt the state standard; where it has not, DHSS enforces the state standard.
The particular administrative authority for Alexandria city was not independently verified.
“Agency: DHSS Authority Type: DHSS Address: 930 Wildwood Dr, Jefferson City, MO 65102 County: Clark”
Septic permitLimited
Construction or repair of an onsite wastewater system serving property inside Alexandria city limits.
Certain residential properties may be exempt from state permitting requirements.
Where authority is based on a local ordinance, regulation can be more restrictive than the state standard.
“A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS). Some single family residential lots may be exempt from permitting.”
Off-grid sanitationLimited
Onsite wastewater disposal serving property inside Alexandria city limits.
A person or property owner may not operate an onsite system so as to cause a nuisance, health hazard, or contamination of surface water or groundwater.
“No person or property owner may operate onsite systems in a manner as to cause a nuisance, health hazard or contaminate surface water or groundwater.”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Alexandria or Clark County directly.
Building permit — Residential construction inside Alexandria city limits.
Owner-builder exemption — Owner-built dwellings inside Alexandria city limits.
Building code adopted — Building construction inside Alexandria city limits.
Inspections — Residential building inspections inside Alexandria city limits.
Certificate of occupancy — New or altered dwellings inside Alexandria city limits.
22 more unanswered
Local zoning
Zoning districts
Minimum dwelling size
Minimum lot size
Setbacks
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Septic inspection
Well permit
Mandatory utility hookup
Agricultural exemption
Subdividing land
Driveway access
Building in a floodplain
Short-term rentals
Permit fees
Permit process
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Alexandria publishes no rule on the point, not that none exists. Clark County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Alexandria means bringing your own water and power. The kit we’d start with:
