Bolthole Index

Ramsey County, Minnesota

Zoning, building permits and septic rules in St. Paul, Minnesota

Building in St. Paul, Minnesota takes a city building permit, issued by the Department of Safety and Inspections (DSI)12. The city sets zoning by district3, and Ramsey County has no land-use authority of its own4. Septic systems inside city limits fall under St. Paul Legislative Code chapter 50, with maintenance reports filed with DSI5.

At a glance

Building permit
Required; issued by the City of Saint Paul DSI12
Zoning
City zoning, set by district3
Lot size and setbacks
Vary by zoning district; ask DSI Zoning67
Septic
St. Paul Legislative Code chapter 50; reports go to DSI5
Inspections
Required before a permit is complete8
Owner-builder
State licensing exemption for owner-occupants; city permit still needed910
Accessory dwellings
Allowed in listed districts, subject to city zoning11
Online permits
PAULIE portal12

Who to call

Building permits

City of Saint Paul Department of Safety and Inspections (DSI)

Building permits, plan review and inspections for construction inside the City of Saint Paul

651-266-8989

375 Jackson Street, Suite 220, Saint Paul, MN 55101

Online permits →

Zoning

Saint Paul DSI Zoning Section

Questions about zoning code setbacks, lot coverage and land use inside the City of Saint Paul

651-266-9008

375 Jackson Street, Suite 220, Saint Paul, MN 55101

Septic permits

Saint Paul DSI, Individual Sewage Treatment Systems

Septic maintenance reports and well water analysis reports under St. Paul Legislative Code chapter 50

651-266-8989

375 Jackson Street, Suite 220, Saint Paul, MN 55101

Zoning

Saint Paul DSI, accessory dwelling unit rules

Accessory dwelling unit standards in the City of Saint Paul zoning code

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

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

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Does St. Paul, MN have zoning, and what does it mean for lot size and setbacks?

Yes. The City of Saint Paul sets zoning by district, and what you can build on a lot depends on its district3. The city's zoning code also covers lot size, setbacks for structures and building height6. We could not confirm the numeric lot-size, setback or height standard for any one district, so the figure for a specific parcel has to come from the city.

Call the DSI Zoning Section at 651-266-9008 with the parcel address and ask for the district, setbacks and lot coverage13. Ramsey County does not set zoning for St. Paul4.

Do you need a building permit in St. Paul, and who issues it?

Yes. Construction inside St. Paul follows the Minnesota building code and city ordinance, and the City of Saint Paul DSI issues the building permits114. Minnesota's code requires an owner to apply for a permit before constructing, enlarging, altering, repairing, moving or demolishing a building10.

Every permit must be inspected and approved before the permitting process is complete, and DSI advises calling the assigned inspector before work starts8. Fees depend on the permit type and the work, and the city publishes a building permit fee schedule that includes the state surcharge15. Apply through PAULIE, the city's online permit system12, or contact DSI at 651-266-898914.

How do septic permits work inside St. Paul?

St. Paul regulates individual sewage treatment systems under its own Legislative Code chapter 50, and DSI collects the septic maintenance report and well water analysis report5. Minnesota state rules otherwise let counties, cities or townships issue construction permits for most septic systems16.

We could not confirm who issues a new-construction septic permit inside St. Paul, or how private wells are permitted. Ask DSI at 651-266-8989 first5.

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

We could not confirm a St. Paul rule on living in an RV or camping on private land, so do not assume either is allowed. Ask the DSI Zoning Section before you park or occupy one13. Minnesota's statewide camping rules cover recreational camping areas, not a single lot, so they do not answer the question17.

For tiny homes, Minnesota's tiny-house appendix defines a tiny house as a dwelling 400 square feet or less in floor area, excluding lofts18. A tiny house used as a dwelling must meet the building code and the city's zoning19.

Accessory dwelling units are the clearer path. St. Paul's zoning code permits two accessory dwelling units for each one-family dwelling on a lot, and only where a one-family dwelling stands on the same lot11.

Building a home in St. Paul: the steps, in order

  1. Ask the DSI Zoning Section which district your lot is in and what it allows313.
  2. Confirm whether sewer service and a well or city water apply to the address; we could not confirm utility-connection rules, so ask DSI14.
  3. Submit plans and apply for the building permit through PAULIE12.
  4. Pay the permit fee from the city's fee schedule15.
  5. Call your assigned inspector before work starts, then schedule each inspection8.
  6. Do not occupy the building until the building official issues a certificate of occupancy20.

If you build the home yourself, Minnesota exempts owner-occupants from contractor licensing, but the exemption does not cover building for resale21. It does not remove the permit requirement.

What stays with Ramsey County, and what to check before you buy in St. Paul

For land outside city limits, use the Ramsey County page; the city rules above apply only inside St. Paul. Ramsey County does not hold land-use or zoning authority itself4.

Before you buy, check four things. First, the zoning district and what it permits3. Second, whether the parcel lies in a floodplain, where building a house or placing fill needs a floodplain permit22. We could not confirm St. Paul's floodplain office. Third, any driveway onto a state highway, which needs a MnDOT access permit23. Fourth, taxes: Ramsey County's effective property tax rate is 1.2%24.

Watch-outs

  • We could not confirm St. Paul rules for RV occupancy, camping on private land, wells or utility connections; ask DSI at 651-266-8989 before you rely on any of them14.
  • Lot size, setbacks and height are set district by district, so a neighbor's answer may not apply to your parcel7.
  • Short-term rentals of under 30 days need a city host license, and operating or advertising without one is unlawful25.
  • Rental buildings that are not owner-occupied, and any building with three or more units, need a Fire Certificate of Occupancy26.

Sources

  1. Building and Construction | Saint Paul Minnesota (St. Paul), quoted and re-checked
  2. City of Saint Paul Department of Safety and Inspections (2026 county census)
  3. Building and Construction | Saint Paul Minnesota (St. Paul), quoted and re-checked
  4. Draft Ramsey County HRA Fiscal Year 2026 Annual Action Plan, quoted and re-checked
  5. Saint Paul DSI, Individual Sewage Treatment Systems (stpaul.gov)
  6. Building and Construction | Saint Paul Minnesota (St. Paul), quoted and re-checked
  7. Building and Construction | Saint Paul Minnesota (St. Paul), quoted and re-checked
  8. Building and Construction | Saint Paul Minnesota (St. Paul), quoted and re-checked
  9. revisor.mn.gov (Minnesota statewide rule), quoted and re-checked
  10. Minnesota Rule 1300.0120, Permits, quoted and re-checked
  11. Saint Paul DSI, accessory dwelling unit rules (stpaul.gov)
  12. Online Permits | Saint Paul Minnesota (St. Paul), quoted and re-checked
  13. Saint Paul DSI Zoning Section (stpaul.gov)
  14. City of Saint Paul Department of Safety and Inspections (DSI) (stpaul.gov)
  15. Building Permits & Inspections | Saint Paul Minnesota (St. Paul), quoted and re-checked
  16. SSTS design (Minnesota statewide rule), quoted and re-checked
  17. 2025 Minnesota Statutes, Chapter 327 (Minnesota statewide rule), quoted and re-checked
  18. Tiny Houses and the 2020 Minnesota Residential Code, quoted and re-checked
  19. Tiny Houses and the 2020 Minnesota Residential Code, quoted and re-checked
  20. Minnesota Rule 1300.0220, Certificate of Occupancy, quoted and re-checked
  21. revisor.mn.gov, quoted and re-checked
  22. Floodplain Regulations (Minnesota statewide rule), quoted and re-checked
  23. Access / Driveway Permit (Minnesota statewide rule), quoted and re-checked
  24. Effective property tax rate: Bolthole Index county data
  25. Short Term Rentals | Saint Paul Minnesota (St. Paul), quoted and re-checked
  26. Short Term Rental Host and Platform License | Saint Paul Minnesota (St. Paul), quoted and re-checked

Written October 24, 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. Paul

St. Paul’s own rules

  • Building code adoptedAdopted (with conditions)

    Construction inside St. Paul city limits.

    • Construction is also regulated through local ordinance.
    “The City regulates construction through local ordinance and the Minnesota building code.”
  • InspectionsRequired

    Work performed under City permits inside St. Paul city limits.

    • Contact the assigned inspector before starting work to coordinate required inspections.
    “All permits must be inspected and approved by the inspector for the permitting process to be complete.”
  • Certificate of occupancyLimited

    Non-owner-occupied residential buildings and all residential buildings with three or more units inside St. Paul city limits.

    • The cited requirement is a Fire Certificate of Occupancy requirement.
    “All residential buildings that are not owner-occupied shall have a Fire Certification of Occupancy. All buildings with three (3) or more units shall have a Fire Certificate of Occupancy.”
  • Local zoningPresent (with conditions)

    Land inside St. Paul city limits.

    • Zoning requirements vary by zoning district.
    “City zoning codes inform what you can build and where you may build on your property based on zoning district.”
  • Minimum lot sizeDistrict specific (with conditions)

    Development subject to St. Paul zoning districts inside city limits.

    • The specific district and numeric lot-size standard were not resolved in the opened material.
    “City zoning codes inform what you can build and where you may build on your property based on zoning district. Zoning code also addresses physical requirements, such as lot size, setbacks for structures, building heights and more.”
  • SetbacksDistrict specific (with conditions)

    Development subject to St. Paul zoning districts inside city limits.

    • The specific district and numeric setback standard were not resolved in the opened material.
    “City zoning codes inform what you can build and where you may build on your property based on zoning district. Zoning code also addresses physical requirements, such as lot size, setbacks for structures, building heights and more.”
  • Building heightDistrict specific (with conditions)

    Development subject to St. Paul zoning districts inside city limits.

    • The specific district and numeric height standard were not resolved in the opened material.
    “City zoning codes inform what you can build and where you may build on your property based on zoning district. Zoning code also addresses physical requirements, such as lot size, setbacks for structures, building heights and more.”
  • Short-term rentalsLimited

    Short-term rentals inside St. Paul city limits.

    • A short-term rental is a dwelling or portion of a dwelling unit rented for less than 30 days.
    • It cannot be used for commercial or social events.
    • Hosts and platforms must obtain a City license and renew it annually.
    • A host license is required; operating or advertising without a valid host license is unlawful.
    • For non-owner-occupied residential buildings, a current Fire Certificate of Occupancy or proof of a completed provisional application and fee payment must be supplied with the application.

    short-term-rental period: < 30 days · required insurance coverage: >= 300000 USD (ACORD certificate is required unless applicant indicates use only of Airbnb, VRBO, and/or HomeAway.)

    “A Short-Term Rental Host license is required for any person who is the owner or tenant of a dwelling unit, or portion thereof who provides a dwelling unit for short-term rental use. Short term means a period of less than 30 days.”
  • Permit feesPublished (with conditions)

    City building permits inside St. Paul city limits.

    • The applicable fee depends on permit type and work.
    “See the Building Permit Fee Schedule for information regarding permit fees and the state surcharge.”
  • Permit processPublished (with conditions)

    City permits and licenses inside St. Paul city limits.

    • Online applications require a valid email address and an up-to-date browser with TLS 1.2 or better.
    • A PDF of the permit must be printed and posted on the job site.
    “PAULIE is the City of Saint Paul's new secure online system for permits, licenses, inspections, complaints, and more.”

Still unanswered

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

  • Owner-builder exemption — Owner-builders of residential structures inside St. Paul city limits.
  • Minimum dwelling size — One-family dwellings inside St. Paul city limits.
  • Living in an RV — RV occupancy on private land inside St. Paul city limits.
  • Camping on your land — Temporary camping on private land inside St. Paul city limits.
  • Tiny homes — Tiny-home occupancy inside St. Paul city limits.
11 more unanswered
  • Manufactured homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Building in a floodplain

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

← All of Ramsey County: county rules, score and offices