Bolthole Index

Pulaski County, Missouri

Building permits, zoning and septic rules in St. Robert, Missouri

St. Robert, Missouri has a city Building Department that enforces adopted building codes; ask that department which building permits your project needs.1 St. Robert sets its own zoning inside city limits.2 For septic in Pulaski County, Missouri DHSS is the OWTS regulatory authority, while St. Robert also requires a written city permit before private sewage system construction.34

At a glance

Building permits
City Building Department enforces adopted codes; confirm project-specific building permits1
Zoning
City zoning applies inside St. Robert city limits2
Septic permits
DHSS OWTS review plus a city private sewage disposal permit34
RV living
No more than 3 days outside an approved RV park5
Minimum lot area
A-1: 3 acres; R-1L: 20,000 square feet67
City sewage fee
$10 private sewage disposal permit and inspection fee8

Who to call

Building permits

St. Robert Building Department

Building-code questions and construction applications

573-451-3319

194 Eastlawn Avenue Suite A Saint Robert, MO 65584

Zoning

St. Robert Land Use / Zoning

Zoning, land-use applications and floodplain development questions

573-451-3319

194 Eastlawn Avenue Suite A Saint Robert, MO 65584

Septic permits

Missouri DHSS Onsite Wastewater Treatment Program

State OWTS construction permitting and exemption questions; coordinate with St. Robert on its separate private sewage disposal permit

573-751-6095

[email protected]

PO Box 570, Jefferson City, MO 65102-0570

Online permits →

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

Going off-grid in St. Robert means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in St. Robert, Missouri?

St. Robert’s Building Department enforces adopted building codes for buildings and structures constructed or occupied within the city.1 Start with the city Building Department for your proposed home, addition or alteration, and ask for the applicable building-permit application, inspection schedule and occupancy requirements.1 We could not confirm the general building-permit requirement, residential inspection schedule or owner-builder exemption for St. Robert; ask the Building Department to resolve those questions before construction.1 For a parcel outside city limits, use the Pulaski County guide for the unincorporated-area building-permit answer.9

Who handles building permits and zoning in St. Robert?

St. Robert’s Building Department and Land Use / Zoning office are the city contacts for construction and land-use questions.110 Ask the Building Department about the proposed structure and ask Land Use / Zoning about the parcel’s district, permitted use and any variance application.110 The city’s Land Use / Zoning page provides a land-use application packet and floodplain development permit form.10 Missouri DHSS remains the OWTS regulatory authority for Pulaski County, but a private sewage system inside St. Robert also needs the city’s Superintendent-signed permit.34

Does St. Robert have zoning, minimum lots and setbacks?

St. Robert requires land uses inside city limits to conform to its permissible-use and land-development regulations.2 In St. Robert’s agricultural A-1 district, the minimum lot area is 3 acres, with front, side and rear setbacks of 35, 25 and 50 feet respectively.611 In St. Robert’s low-density single-family R-1L district, the minimum lot area is 20,000 square feet, with front, side and rear setbacks of 25, 15 and 30 feet respectively.712 Front setbacks are measured from the street right-of-way line, and corner lots apply the front setback along both street frontages.1112 Ask Land Use / Zoning to identify the district before selecting a house footprint.10

How do septic permits work inside St. Robert?

Before constructing a private sewage disposal system in St. Robert, the owner must obtain a written permit signed by the Superintendent, using the city form with requested plans and specifications.4 St. Robert’s code states a $10 permit and inspection fee, paid when the application is filed.8 The applicant must notify the Superintendent for final inspection before covering underground work.13 Separately, Missouri DHSS regulates OWTS in Pulaski County, and most installations or repairs require a construction permit unless an exemption is confirmed.314 Missouri’s temporary DHSS application-fee suspension does not establish a waiver of St. Robert’s separate city fee; ask both offices which approvals and charges apply.158

Can you live in an RV or tiny home in St. Robert?

An RV in St. Robert may not be occupied for more than 3 days unless parked inside an approved recreational vehicle park.5 That limit makes an extended RV stay on a private building lot unsuitable as a default housing plan while construction proceeds.5 St. Robert RV parks require a conditional use permit and are allowed only in C-2 districts on sites of at least 4 acres.5 We could not confirm a St. Robert rule specifically allowing tiny-home occupancy or an accessory dwelling unit; ask Land Use / Zoning about the proposed residential use and the Building Department about construction approval.101

What are the steps to building a home in St. Robert?

  1. Ask St. Robert Land Use / Zoning to confirm the parcel’s district and proposed residential use, then fit the site plan to that district’s lot and setback rules.1021112
  2. Take the proposed structure to the St. Robert Building Department and request the building-permit and inspection requirements for the project.1
  3. If proposing private sewage disposal, obtain the Superintendent-signed city permit and resolve the DHSS construction permit or exemption before starting system work.414
  4. Check floodplain development approval with Land Use / Zoning; Missouri requires a permit for all development in a floodplain.1016
  5. Arrange the city private-sewage final inspection before underground portions are covered.13

Watch-outs

  • St. Robert’s RV occupancy limit is 3 days outside an approved RV park, so resolve temporary housing before planning to live on a building lot.5
  • A DHSS septic exemption does not establish an exemption from St. Robert’s written private sewage disposal permit; confirm both requirements before system construction.144
  • We could not confirm private-well or driveway-access requirements inside St. Robert; ask Land Use / Zoning which office must approve the proposed site plan.10

Sources

  1. St. Robert Building Department (saintrobert.com)
  2. Article I: Zoning Districts (St. Robert), quoted and re-checked
  3. On-Site Wastewater Treatment Systems, quoted and re-checked
  4. ecode360.com (St. Robert), quoted and re-checked
  5. Chapter 423 Recreational Vehicle Parks — Regulations (St. Robert), quoted and re-checked
  6. Chapter 412: Density and Dimensional Regulations (St. Robert), quoted and re-checked
  7. Chapter 412: Density and Dimensional Regulations (St. Robert), quoted and re-checked
  8. ecode360.com (St. Robert), quoted and re-checked
  9. State of Missouri Data Portal - County Building Codes for Missouri (2026 county census)
  10. St. Robert Land Use / Zoning (saintrobert.com)
  11. ecode360.com (St. Robert), quoted and re-checked
  12. Chapter 412: Density and Dimensional Regulations (St. Robert), quoted and re-checked
  13. ecode360.com (St. Robert), quoted and re-checked
  14. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
  15. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
  16. Floodplain Forms (Missouri statewide rule), quoted and re-checked

Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for St. Robert

St. Robert’s own rules

  • Local zoningPresent

    Land inside St. Robert city limits.

    • Land uses must conform to Chapter 404 and other applicable land-development regulations.
    “All land uses will be in conformance with the provisions of Chapter 404 (Permissible Uses) and other applicable Sections of this regulation.”
  • Minimum lot sizeDistrict specific (with conditions)

    Agricultural A-1 district inside St. Robert city limits.

    • The table also states a maximum density of one dwelling unit per three acres.

    minimum lot area: >= 3 acres

    “"A-1" | 3 acres | 1 du/3 acres | 200 feet | 35 feet | 25 feet | 50 feet | 35 feet | 25%”
    One more reviewed finding on this topic
    • District specific (with conditions) — Residential single-family low-density R-1L district inside St. Robert city limits.
      “"R-1L" | 20,000 sf | 1 du/1 acre | 125 feet | 25 feet | 15 feet | 30 feet | 35 feet | 30%”
  • SetbacksDistrict specific (with conditions)

    Agricultural A-1 district inside St. Robert city limits.

    • Front setback is measured from the street right-of-way line; corner lots apply the front setback to both street-frontage sides.

    front setback: >= 35 feet · side setback: >= 25 feet · rear setback: >= 50 feet

    “"A-1" | 3 acres | 1 du/3 acres | 200 feet | 35 feet | 25 feet | 50 feet | 35 feet | 25%”
    One more reviewed finding on this topic
    • District specific (with conditions) — Residential single-family low-density R-1L district inside St. Robert city limits.
      “"R-1L" | 20,000 sf | 1 du/1 acre | 125 feet | 25 feet | 15 feet | 30 feet | 35 feet | 30%”
  • Lot coverageSpecified

    Agricultural A-1 district inside St. Robert city limits.

    • Maximum lot coverage is the gross percentage of all primary and accessory buildings permitted on a lot.

    maximum gross lot coverage: <= 25 percent

    “"A-1" | 3 acres | 1 du/3 acres | 200 feet | 35 feet | 25 feet | 50 feet | 35 feet | 25%”
    One more reviewed finding on this topic
    • Specified — Residential single-family low-density R-1L district inside St. Robert city limits.
      “"R-1L" | 20,000 sf | 1 du/1 acre | 125 feet | 25 feet | 15 feet | 30 feet | 35 feet | 30%”
  • Building heightSpecified

    Agricultural A-1 district inside St. Robert city limits.

    • Height is measured from the average finished grade within 20 feet of the structure to the highest point of the roof.
    • Specified roof features may be exempt subject to the code's conditions.

    maximum building height: <= 35 feet (specified exempt roof features subject to Section 412.011)

    “"A-1" | 3 acres | 1 du/3 acres | 200 feet | 35 feet | 25 feet | 50 feet | 35 feet | 25%”
    One more reviewed finding on this topic
    • Specified — Residential single-family low-density R-1L district inside St. Robert city limits.
      “"R-1L" | 20,000 sf | 1 du/1 acre | 125 feet | 25 feet | 15 feet | 30 feet | 35 feet | 30%”
  • Living in an RVLimited

    Recreational-vehicle occupancy inside St. Robert city limits.

    • An RV may not be occupied for more than three days unless parked inside an approved recreational vehicle park.
    • A recreational vehicle park requires a conditional use permit.
    • RV parks may be established only in C-2 zoning districts and must have at least four acres.
    • Occupancy in an RV park for more than 180 days in any 12-month period is conclusively permanent occupancy.

    maximum occupancy outside approved RV park: <= 3 days · minimum RV park site area: >= 4 acres

    “No recreational vehicle shall be occupied for more than three (3) days unless the same is parked inside an approved recreational vehicle park.”
  • Septic inspectionRequired

    Private sewage disposal systems inside St. Robert city limits.

    • The permit does not become effective until installation is completed to the Superintendent's satisfaction.
    • The Superintendent may inspect at any stage.
    • The applicant must notify the Superintendent for final inspection before underground portions are covered.
    • Inspection is to be made within 48 hours after notice.

    final inspection response time: 48 hours

    “He/she shall be allowed to inspect the work at any stage of construction and, in any event, the applicant for the permit shall notify the Superintendent when the work is ready for final inspection, and before any underground portions are covered.”
  • Building in a floodplainLimited

    Development in St. Robert's FH-1 flood-hazard overlay and agricultural structures in a regulated floodplain.

    • The FH-1 overlay permits underlying-district uses only if also permitted by Chapter 421.
    • Agricultural structures may be constructed at grade and wet-floodproofed only if there is no human habitation or occupancy, the structure is single-wall, has no permanent retail, wholesale, or manufacturing use, a variance is granted, and a floodplain development permit is issued.
    “Structures used solely for agricultural purposes in connection with the production, harvesting, storage, drying or raising of agricultural commodities, including the raising of livestock, may be constructed at-grade and wet-floodproofed provided there is no human habitation or occupancy of the structure; the structure is of single-wall design; there is no permanent retail, wholesale or manufacturing use included in the structure; a variance has been granted from the floodplain management requirements of this Chapter; and a floodplain development permit has been issued.”
  • Permit feesPublished (with conditions)

    Private sewage disposal permit applications inside St. Robert city limits.

    • The fee is due when the private sewage permit application is filed.

    private sewage disposal permit and inspection fee: 10 USD

    “A permit and inspection fee of ten ($10.00) dollars shall be paid to the City at the time the application is filed.”
  • Permit processPublished (with conditions)

    Private sewage disposal permits inside St. Robert city limits.

    • Obtain a written Superintendent-signed permit before construction.
    • Use the city form and provide requested plans, specifications, and information.
    • Notify the Superintendent for final inspection before underground portions are covered.
    • Final inspection is to be made within 48 hours after notice.
    “Before commencement of construction of a private sewage disposal system the owner shall first obtain a written permit signed by the Superintendent. The application for such permit shall be made on a form furnished by the City of St. Robert, which the applicant shall supplement by any plans, specifications, and other information as are deemed necessary by the Superintendent.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask St. Robert or Pulaski County directly.

  • Building permit — New construction and alterations inside St. Robert city limits.
  • Owner-builder exemption — Owner-builders constructing or altering buildings inside St. Robert city limits.
  • Inspections — Building construction inside St. Robert city limits.
  • Certificate of occupancy — Occupancy of buildings inside St. Robert city limits.
  • Tiny homes — Tiny-home occupancy inside St. Robert city limits.
6 more unanswered
  • Accessory dwellings
  • Well permit
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Short-term rentals

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 St. Robert publishes no rule on the point, not that none exists. Pulaski County’s page lists the county offices to call.

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