Bolthole Index

Winona County, Minnesota

Building permits, zoning and septic rules in Lewiston, Minnesota

Lewiston, Minnesota requires building permits for construction, additions, alterations, demolition and repairs, subject to State Building Code exemptions.1 Lewiston administers zoning inside city limits, separately from Winona County’s zoning jurisdiction.2 Sewer connection is required for qualifying properties after official notice; for a proposed private septic system, ask City Hall to confirm the administering office before proceeding.34

At a glance

Building permits
Required for regulated building work; apply through the City Clerk1
Zoning approval
City zoning permit required before constructing or moving structures, including decks2
Sewer connection
Qualifying properties must connect within 90 days after official notice3
Residential lot size
R-1: 8,000 square feet for one- or two-family dwellings; R-A: 2.5 acres for one-family dwellings, subject to existing-lot exceptions56
Owner-built projects
Owners must obtain necessary permits and arrange inspections7
Building permit fees
Generally based on construction valuation; some projects have flat fees8

Who to call

Building permits

Lewiston City Hall — Building and Zoning

City building permit and inspection questions; starting contact for zoning and utility questions

507-523-2257

75 Rice St

Septic permits

Winona County Planning & Environmental Services

County septic program; ask whether the county administers a proposed private system inside Lewiston

507-457-6520

202 West Third St, Winona, MN

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 Lewiston means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Lewiston, MN?

Lewiston requires a building permit to construct, add onto, alter, remove, demolish or repair a structure, with exceptions where the Minnesota State Building Code exempts the work.1 Lewiston has adopted the Minnesota State Building Code for areas inside city limits.9

A homeowner doing the work personally must still obtain the necessary permits and arrange required inspections.7 Minnesota’s residential-contractor licensing exemption can cover an owner who will occupy the home or retain it for rental, but does not cover construction for resale or speculation.10 Treat owner-building as a question of who performs the work, while keeping Lewiston’s permit and inspection obligations in the project plan.7

Who issues building permits in Lewiston, and what do they cost?

Start with Lewiston City Hall at 507-523-2257 for building permit and inspection questions.4 Lewiston building permit applications are filed with the City Clerk, with the entire fee due in advance and delinquent city charges paid before issuance.1 The city’s Building Inspector reviews permitted construction and installations for compliance with state codes and building regulations.4

Lewiston building permit fees vary with construction valuation, while some projects have flat fees; mechanical fees depend on installation type and plumbing fees on fixture number and type.8 Lewiston’s published process estimates 3 to 5 days to review plans and complete a building permit; zoning applications involving a variance or conditional use follow a separate review procedure.11

Does Lewiston have zoning, lot-size rules and setbacks?

Lewiston requires a zoning permit before constructing or moving a structure, including a deck.2 Identify the parcel’s district before drawing a house footprint: Lewiston’s residential dimensional rules differ by district.56

In Lewiston’s R-1 One- and Two-Family Residence District, a lot for a one- or two-family dwelling needs at least 8,000 square feet, an 80-foot width and a 100-foot depth; corner lots need a 100-foot width.5 R-1 yards generally require 25 feet in front, 10 feet on each side and 40 feet at the rear, with existing-block front-setback and accessory-building exceptions.12

In Lewiston’s R-A Agriculture-Residence District, a one-family dwelling generally needs 2.5 acres, with an exception for qualifying previously recorded lots.6 R-A side yards are 10% of lot width each, rather than R-1’s fixed side-yard distance; front and rear yards generally require 25 and 40 feet, subject to stated exceptions.13

How do septic permits and sewer connections work in Lewiston?

Lewiston requires suitable toilet facilities and sanitary-sewer connection for a dwelling or commercial establishment on property abutting a public street or alley with water and sewer mains, within 90 days after written official notice.3 That connection requirement makes sewer availability an early question for a buyer considering off-grid sanitation.3

For a proposed private septic system inside Lewiston, we could not confirm the administering local office; ask City Hall and Winona County Planning & Environmental Services to resolve jurisdiction before commissioning a design.414 Minnesota generally requires local construction permits for most subsurface sewage treatment systems, and inspection of new or replacement systems.1516 The county department issues septic permits, but its general program description does not settle responsibility for a particular Lewiston address.14

Can you live in an RV or tiny home in Lewiston?

We could not confirm Lewiston’s rules for RV occupancy, temporary camping, tiny-home occupancy or independent accessory dwellings; ask City Hall about the proposed use and parcel before buying a unit.4 Minnesota leaves permission for tiny homes and accessory dwellings to local zoning, while requiring applicable residential building-code compliance.17

Lewiston’s mobile-home rule generally prohibits parking or occupancy outside an approved mobile-home park, with stated storage and temporary exceptions.18 The City Council may issue a temporary special permit for up to 90 days, with removal required at the end and restrictions on consecutive permits.18 That mobile-home provision does not establish permission to occupy an RV or a tiny home; ask City Hall how the city classifies the specific unit.4

Building a home in Lewiston: what are the steps, in order?

  1. Ask Lewiston City Hall to identify the parcel’s zoning district and confirm the proposed residential use and building footprint.42
  2. Resolve sewer connection before choosing an off-grid sanitation design; qualifying properties must connect after official notice.3
  3. Prepare the zoning application’s ownership evidence, legal description and site drawing, plus other agency approvals when required.2
  4. Submit structural plans and the building permit application through the City Clerk, and obtain the required zoning approval before construction.1112
  5. Arrange required inspections even when doing the work yourself, and ask City Hall what final approval is needed before occupancy.74

A conforming Lewiston zoning permit is issued within 30 days under the published procedure; a variance, conditional use or zoning amendment requires the designated city review process.11

What should you check before buying land in Lewiston?

Confirm that the address is inside Lewiston city limits: the city administers its own zoning, while land outside the city needs the Winona County guide and the appropriate county or township office.19

For a Lewiston parcel in a regulated floodplain, Minnesota requires floodplain approval for projects such as a house, fill or culvert; mapped floodways generally prohibit dwellings and enclosed structures.2021 Ask City Hall which floodplain review applies to the address.4 A direct driveway connection to a state highway needs a MnDOT access permit before construction or modification; that state rule does not resolve access to a city street.22

Minnesota generally requires advance notification and a filing fee for water-supply well construction, subject to statutory exceptions and delegated local programs; ask City Hall about local water service and restrictions before planning a private well.234

Watch-outs

  • Lewiston’s R-A lot-size exception for qualifying previously recorded lots does not allow further reductions or subdivision into nonconforming lots.6
  • We could not confirm when Lewiston requires a certificate of occupancy or a minimum dwelling floor area; ask City Hall before finalizing a small-home plan.4
  • An owner doing construction personally must obtain necessary Lewiston building permits and arrange inspections.7

Sources

  1. City of Lewiston City Code (Lewiston), quoted and re-checked
  2. City of Lewiston City Code (Lewiston), quoted and re-checked
  3. City of Lewiston City Code (Lewiston), quoted and re-checked
  4. Lewiston City Hall — Building and Zoning (lewistonmn.gov)
  5. lewistonmn.gov (Lewiston), quoted and re-checked
  6. lewistonmn.gov (Lewiston), quoted and re-checked
  7. lewistonmn.gov (Lewiston), quoted and re-checked
  8. lewistonmn.gov (Lewiston), quoted and re-checked
  9. City of Lewiston City Code (Lewiston), quoted and re-checked
  10. revisor.mn.gov (Minnesota statewide rule), quoted and re-checked
  11. Planning & Zoning (Lewiston), quoted and re-checked
  12. City of Lewiston City Code (Lewiston), quoted and re-checked
  13. City of Lewiston City Code (Lewiston), quoted and re-checked
  14. Winona County Planning & Environmental Services (winonacounty.gov)
  15. SSTS design (Minnesota statewide rule), quoted and re-checked
  16. 2025 Minnesota Statutes, section 115.55: Subsurface Sewage Treatment Systems (Minnesota statewide rule), quoted and re-checked
  17. Storage Sheds and the Minnesota State Building Code (Minnesota statewide rule), quoted and re-checked
  18. City of Lewiston City Code (Lewiston), quoted and re-checked
  19. Online Permitting, quoted and re-checked
  20. Floodplain Regulations (Minnesota statewide rule), quoted and re-checked
  21. Floodplain Regulations (Minnesota statewide rule), quoted and re-checked
  22. Minnesota Statutes, section 160.18: Access to roads; approaches (Minnesota statewide rule), quoted and re-checked
  23. 2025 Minnesota Statutes, section 103I.205: Well Construction (Minnesota 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 Lewiston

Lewiston’s own rules

  • Building permitRequired

    Construction, alteration, movement, demolition, or repair of buildings and structures inside Lewiston.

    • Exceptions may apply where the Minnesota State Building Code exempts the work.
    • Applications are filed with the City Clerk and the entire fee is due in advance.
    • Delinquent city charges must be paid before issuance.
    “Building Permits are required to construct, add onto, alter, remove, demolish or repair a structure.”
  • Owner-builder exemptionConditional

    An owner performing construction work on property inside Lewiston.

    • The owner must obtain necessary permits and arrange required inspections.
    • The source does not state an exemption from permitting; it describes the owner-performed-project process.
    “A homeowner, when doing his/her own project, needs to obtain the necessary permits and call to arrange for the required inspections.”
  • Building code adoptedAdopted

    All areas within Lewiston city limits.

    • The adopted code incorporates Minnesota Rules chapters identified in §505.03, including building, mechanical, plumbing, manufactured-home, flood-proofing, and energy provisions.
    “The City of Lewiston has adopted the Minnesota State Building Code, pursuant to Minnesota Statutes Section 16B.59 through 16B.75 which Code shall be the building Code for all areas within the City Limits of the City of Lewiston.”
  • Local zoningPresent

    Land inside Lewiston city limits; the City Code establishes zoning districts, a Zoning Administrator, a Planning and Zoning Commission, and zoning permits.

    • Zoning permits are required before construction or movement of structures, including decks.
    • Applications may require ownership evidence, a legal description, a site drawing extending up to 100 feet, and county, state, or federal permits when required.
    “It shall be the duty of the Zoning Administrator to cause the provisions of this Chapter to be enforced through the proper legal channels. 1. Hereinafter, it is unlawful for any person to construct or move any kind of structure or building or part thereof including decks without first securing a zoning permit therefore.”
  • Manufactured homesProhibited

    Occupancy or parking of a mobile/manufactured home outside an approved mobile-home park inside Lewiston city limits.

    • Emergency or temporary stopping or parking is permitted for no longer than 48 hours, subject to other traffic and parking restrictions.
    • One unoccupied mobile home may be stored in a private garage or rear yard under the stated conditions.
    • The City Council may issue temporary special permits for up to 90 days, with removal required at the end; consecutive permits are limited except when a residential building permit has been applied for and issued or other good cause is shown.

    emergency or temporary stopping limit: 48 hours (subject to other traffic and parking prohibitions) · temporary special permit limit: 90 days (must be removed at end of period)

    “It shall be unlawful for any person to park any mobile home on any street, alley or highway or other public place or on any tract, lot, piece or parcel of land and whether the same is occupied or unoccupied within the limits of the City of Lewiston, except as provided by this ordinance.”
  • Mandatory utility hookupSewer (with conditions)

    Any dwelling or commercial establishment inside Lewiston whose property abuts a public street or alley along which city water and sewer mains have been constructed.

    • The owner must install suitable toilet facilities and connect to the sanitary sewer within 90 days after written official notice.
    • If the owner fails to comply, the City Council may direct the City to install the toilet and connection and assess the cost against the property.

    connection deadline: 90 days after official notice

    “When property abuts upon any public street or alley along which water and sewer mains have been constructed, the owner of any dwelling or commercial establishment on the property shall install suitable toilet facilities therein and connect them with the sanitary sewer in accordance with the provisions of this ordinance within ninety days after the date of mailing or delivering official notice to do so.”
  • Permit feesVariable (with conditions)

    Building, mechanical, plumbing, and related permits inside Lewiston.

    • Building permit fees vary by construction valuation.
    • Certain projects have flat fees.
    • Mechanical fees depend on installation type; plumbing fees depend on fixture number and type.
    • The code also provides for a state surcharge on permits governed by the State Building Code.
    “Building permit fees vary according to the valuation of the construction project. There are flat fees for certain projects. Mechanical permit fees are based upon the type of installation. Plumbing permits are based upon the number and type of fixtures, etc.”
  • Permit processPublished (with conditions)

    Building and zoning permit applications inside Lewiston.

    • Structural plans must be submitted for examples including decks, porches, additions, garages, and sheds over 120 square feet.
    • The city reviews plans and completes permits in approximately 3 to 5 days according to the city page.
    • A zoning application requires stated exhibits unless waived; conforming zoning permits are issued within 30 days.
    • Conditional-use, variance, or zoning-amendment applications follow Planning Commission or Board of Adjustment procedures.

    plan review and permit completion time: 3 to 5 days · conforming zoning permit issuance: <= 30 days (after submission to Zoning Administrator)

    “Plans need to be submitted for any structural work that is being completed, for example a deck, porch, addition, garage, sheds (over 120 s.f.) etc. The permit process takes 3 to 5 days to review plans and complete the permit.”

Rules another office applies inside Lewiston

Lewiston does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Minimum lot sizeSpecified

    One- and two-family dwellings in the R-1 One- and Two-Family Residence District.

    • Three- or four-family dwellings require 2,000 additional square feet for each dwelling unit in excess of two.
    • The minimum width is 80 feet; corner lots require 100 feet; minimum depth is 100 feet.
    • The cited provision does not state an effective date.

    minimum lot area: >= 8000 square feet (one- or two-family dwelling) · minimum lot width: >= 80 feet (corner lots require 100 feet) · minimum lot depth: >= 100 feet (one- or two-family dwelling)

    “Every lot on which a one- or two-family dwelling is erected shall have a minimum area of eight thousand (8,000) square feet.”
    One more reviewed finding on this topic
    • Specified — One-family dwellings in the R-A Agriculture-Residence District.
      “Every lot on which a one family dwelling is erected shall contain an area of not less than two and one-half (2 1 / 2) acres.”
  • SetbacksSpecified

    Structures in the R-1 One- and Two-Family Residence District.

    • Front setback is subject to average setback where two or more residences face the same street in a block.
    • Corner lots must have a front yard on each street side.
    • Accessory buildings and uses allowed in the rear yard must be at least 5 feet from side or rear lot lines.

    front yard: >= 25 feet (average existing-block setback may control) · side yards: >= 10 feet each · rear yard: >= 40 feet (specified accessory buildings may be 5 feet from side or rear lines)

    “There shall be a front yard having a depth of not less than twenty-five (25) feet, except that in a block where two or more residences have been erected facing the same street, the setback for remaining lots in that block, fronting on the same street, shall be determined by the average setback of existing buildings.”
    One more reviewed finding on this topic
    • Specified — Structures in the R-A Agriculture-Residence District.
      “There shall be a front yard having a depth of not less than twenty-five (25) feet, except that in a block where two or more residences have been erected facing the same street, the setback for remaining lots in that block fronting on the same street shall be determined by the average setback of existing buildings.”
  • Building heightSpecified

    Structures in the R-1 One- and Two-Family Residence District.

    • Church spires, belfries, domes without usable space, and chimneys may exceed the limit if they do not conflict with airport requirements.

    maximum height: <= 30 feet (maximum two and one-half stories; listed architectural features excepted)

    “No structure shall exceed two and one-half (2 1 / 2 ) stories or thirty (30) feet in height, except that church spires, belfries, domes which do not contain useable space, and chimneys may be of any height which does not conflict with airport requirements.”
    One more reviewed finding on this topic
    • Specified — Structures in the R-A Agriculture-Residence District.
      “No structure shall exceed two and one-half (2 1 / 2) stories or thirty (30) feet in height, except that church spires, belfries, domes which do not contain useable space, and chimneys may be of any height which does not conflict with airport requirements.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Lewiston or Winona County directly.

  • Certificate of occupancy — Certificates of occupancy for buildings inside Lewiston city limits.
  • Minimum dwelling size — One- and two-family dwellings in the R-1 One- and Two-Family Residence District.
  • Lot coverage — Residential lots inside Lewiston city limits, including R-1 and R-A districts.
  • Living in an RV — Occupancy of recreational vehicles on private land inside Lewiston city limits.
  • Camping on your land — Temporary camping on private land inside Lewiston city limits.
10 more unanswered
  • Tiny homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • 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 Lewiston publishes no rule on the point, not that none exists. Winona County’s page lists the county offices to call.

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