Building permits, zoning and land rules in Martin County, Minnesota
56Index Score / 100 #45 of 87 in Minnesota
Unincorporated Martin County, Minnesota requires a building permit before constructing, moving in, replacing or adding onto a structure; inside an incorporated city, the applicant contacts that city's clerk instead.1 Martin County zoning approval covers only land outside incorporated municipal limits.2 Septic permits and installation inspections come from Martin County Planning and Zoning.345
At a glance
Building permit
Required before covered structural work outside city limits1
Zoning
County zoning and published districts apply outside incorporated municipal limits67
Septic permit
County permit and installation inspection required45
RV living
Long-term occupancy rule not confirmed; ask Planning and Zoning8
Tiny home
County occupancy and minimum-size rules not confirmed; zoning review still applies8
Owner-builder
Owners may perform their own work, but permits still apply91
Well permit
County-specific requirement not confirmed; ask Planning and Zoning who has jurisdiction8
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Do you need a building permit in Martin County, Minnesota?
Yes. Before constructing, moving in, replacing or adding onto a structure outside incorporated city limits, Martin County requires a building permit1. For property inside an incorporated city, Martin County directs the applicant to the local city clerk1. The Minnesota State Building Code supplies the statewide minimum construction standard, although local enforcement depends on adoption and agricultural buildings receive limited statutory treatment1011. Some form of onsite compliance inspection is required whenever a State Building Code permit is issued12. A covered building cannot be used or occupied until the building official issues a certificate of occupancy, subject to stated exceptions and temporary-certificate authority13. A homeowner may perform all or part of the work on the owner's property, but that allowance does not replace the county permit requirement91.
Who issues building permits in Martin County, and how do you reach them?
Martin County Planning and Zoning coordinates county land-use administration and maintains the county's subsurface sewage treatment program14. The office is in Room 104 of the Martin County Courthouse, 201 Lake Avenue, Fairmont, MN 56031, and its phone number is 507-238-324214. Martin County directs rural applicants to that office for building-permit application information, but it does not publish the complete workflow15. The county permit notice covers work outside incorporated city limits; for a site inside a city, contact that city's clerk instead1. Fees may include the building permit, plan review, state surcharge, trade work, septic, sewer and water, but Martin County's current amounts could not be confirmed; request the local fee schedule before budgeting16. For a new driveway, identify whether the frontage is a county, township, city or state road because additional public-highway access is subject to regulation and a permit from the responsible road authority17.
Does Martin County have zoning, and who zones inside its cities?
Martin County zoning approval applies to land outside the incorporated limits of municipalities, so a parcel inside a city takes its zoning from that city, not the county6. The county publishes a zoning ordinance and zoning map for those unincorporated areas, so ask Martin County Planning and Zoning to identify the parcel's district before planning a use or structure7. Property within an incorporated municipality is governed through the applicable city process rather than the county's unincorporated-area permit notice1. Martin County's numeric setbacks, minimum lot size, minimum dwelling size, lot-coverage limit and building-height limit could not be confirmed; request the current dimensional standards before relying on a survey or positioning a house. Minnesota law also allows municipal subdivision ordinances to address lot size, improvements, utilities, floodplains, shorelands and soils, and in some circumstances to extend into nearby unincorporated territory18. A parcel split therefore needs its own jurisdiction check rather than an assumption based only on the county zoning map.
Who issues septic permits in Martin County?
Martin County Planning and Zoning issues septic permits and inspects septic-system installations, separate from building permits and zoning approval, and both county and state rules apply345. Upgrades or replacements must use licensed septic-system designers, inspectors and installers3. Most Minnesota subsurface sewage treatment systems receive construction permits from a county, city or township, while systems designed for flows greater than 10,000 gallons per day require Minnesota Pollution Control Agency permitting1920. Soil feasibility is a major early check in Martin County: only 7.3% of mapped soils are rated without severe limitations for a conventional septic drain field21. That countywide soil statistic does not decide an individual parcel, but it supports arranging site and soil evaluation before finalizing a house location. Off-grid sanitation is not automatically unregulated; Minnesota imposes disposal conditions on primitive dwellings using toilet-waste devices, and local ordinances control first22.
Can you live in an RV or tiny home in Martin County?
Martin County's rules for long-term residential RV occupancy could not be confirmed. Because county zoning applies outside incorporated municipal limits, ask Martin County Planning and Zoning how an RV use is classified before buying or moving one onto a rural parcel6. Do not treat Minnesota's campground law as permission to live in one RV on private land: the statewide licensing rule applies to an area accommodating 5 or more tents or recreational camping vehicles and does not resolve local land-use approval for one parcel23. A tiny house used as a dwelling must follow the Minnesota Residential Code, while local zoning controls such matters as land use, location, foundation type and building size24. A tiny home moved onto or built on an unincorporated Martin County parcel also faces the county building-permit rule1. Confirm sanitation, setbacks, minimum dwelling size and temporary occupancy directly with Planning and Zoning because those county-specific answers remain unresolved.
How do you build a home in Martin County, step by step?
Confirm whether the parcel is outside an incorporated city's limits, because that decides whether Martin County or the city clerk starts the permit process1.
Ask Martin County Planning and Zoning for the parcel's zoning district, dimensional standards, application materials and current fees71516.
Apply for the building permit before constructing, moving in, replacing or adding onto the structure1.
Arrange septic design with licensed professionals and obtain the county septic permit before installation34.
Keep permitted work exposed for the inspections identified by the building official, and obtain the required occupancy certificate for covered buildings before use2513.
Identify the road authority and secure any required driveway-access permit before building the approach17.
If the building site, fill or a culvert lies in a floodplain, obtain the locally administered floodplain approval before development26.
What should you check before buying land in Martin County?
Confirm the jurisdiction first: county zoning and the county building-permit notice apply outside incorporated municipal limits, while a site inside a city goes through its clerk61. Investigate septic suitability early because only 7.3% of mapped soils are rated without severe limitations for a conventional drain field21. Martin County is overwhelmingly gentle ground, with 99.9% of land at a slope of 15% or less, but a site survey and floodplain check still matter2726. Average annual precipitation is 31.8 inches, and severe drought occurs in about 12.8% of years2829. The nearest city of 100,000 or more is about 106 miles from the county center, so allow for rural travel, materials and contractor scheduling30. The effective property-tax rate is about 1%, with a median annual property-tax bill of about $1,5473132. Before closing, also confirm legal road access, well permitting, utility availability and setbacks because county-specific answers for those items could not be confirmed.
Watch-outs
A Martin County mailing address does not establish permit jurisdiction; county rules apply outside incorporated city limits, while sites inside a city go to that city's clerk1.
Only 7.3% of mapped county soils are rated without severe limitations for a conventional septic drain field, so investigate onsite wastewater feasibility before fixing the house location21.
Martin County's long-term RV occupancy, tiny-home minimum size, setbacks and well-permit rules could not be confirmed; ask Planning and Zoning before purchase or placement6.
Written October 9, 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.
Martin County highlighted among the Minnesota counties · colored by Index score
How Martin County scores
Seclusion65100% ev.
Self-Sufficiency30100% ev.
Admin Boringness43100% ev.
Durability62100% ev.
Property Autonomy65100% ev.
Carry Cost61100% ev.
Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →
$225kTypical home
1%Property tax
$8,968Land / acre
31.8"Annual rain
12.8% of yrsSevere drought
2.9 / yr (+2.8)Mid-century 100°F days
16.9 daysMid-century dry spell
1.71" (+12.4%)Mid-century 1-day rain
1.71×Wildfire change factor
100%Forward climate coverage
$1,781Home insurance / yr
4.7% / yrInsurance growth
0.5%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
12,250People within 30 min
1,109,382People within 2 hr
21,256Radius comparison (15 mi)
27.6People / sq mi
0.3%Federal land
99.9%Land at 15% slope or less
7.3%Soils rated "not limited" for septic (strict USDA rating)
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Cities and towns in Martin County
Inside a city, town or township here, that government usually sets zoning and may issue its own building permits; the county’s rules above cover land outside them.
Not yet researched: Cedar Township · Center Creek Township · Ceylon · Dunnell · East Chain Township · Elm Creek Township · Fox Lake Township · Fraser Township · Galena Township · Granada · Jay Township · Lake Belt Township · Lake Fremont Township · Manyaska Township · Nashville Township · Northrop · Pleasant Prairie Township · Rolling Green Township · Rutland Township · Sherburn · Silver Lake Township · Tenhassen Township · Trimont · Truman · Waverly Township · Welcome · Westford Township
Answers from the rulebook for Martin County
What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.
Martin County rules
Building permitRequired
Houses, manufactured homes, garages, feedlots, additions, decks, patios, sheds, barns, driveways, and other structures in Martin County; county administration is for locations outside incorporated city limits.
A building permit is required before constructing, moving in a structure, replacing an existing structure, or adding onto an existing building.
For locations within incorporated city limits, contact the local city clerk.
“Residents of Martin County are reminded a BUIDLING PERMIT is required PRIOR to constructing, moving-in a structure, replacing an existing structure, or adding-on to an existing building. Please contact your local city clerk if the location is within incorporated city limits.”
2 more reviewed findings on this topic
Required — Construction, moving-in, replacement, or addition to a structure in Martin County outside incorporated city limits.
“Residents of Martin County are reminded a BUIDLING PERMIT is required PRIOR to constructing, moving-in a structure, replacing an existing structure, or adding-on to an existing building. Please contact your local city clerk if the location is within incorporated city limits.”
Required — Construction, moving-in, replacement, or addition of structures in Martin County outside incorporated city limits.
“Residents of Martin County are reminded a BUIDLING PERMIT is required PRIOR to constructing, moving-in a structure, replacing an existing structure, or adding-on to an existing building. Please contact your local city clerk if the location is within incorporated city limits.”
County-wide zoningPresent (with conditions)
Martin County zoning ordinance outside incorporated municipal limits.
The source expressly limits the county zoning ordinance to areas outside incorporated municipal limits.
“The purpose of the Zoning Ordinance is to promote health, safety, order, convenience and general welfare, by regulating the use of land, the location and the use of buildings and the arrangement of buildings on lots, the density of population and the division of the county into districts for the orderly future development of the area of Martin County, Minnesota, or parts thereof outside the incorporated limits of the municipalities.”
2 more reviewed findings on this topic
Present (with conditions) — County zoning in areas outside incorporated municipal limits.
“parts thereof outside the incorporated limits of the municipalities.”
Present (with conditions) — Martin County zoning outside the incorporated limits of municipalities.
“or parts thereof outside the incorporated limits of the municipalities.”
Local zoningPresent (with conditions)
Land and buildings in the unincorporated portions of Martin County, Minnesota.
The ordinance applies to the area of Martin County outside the incorporated limits of municipalities.
The ordinance divides unincorporated portions of the county into zones and districts and regulates the location, construction, reconstruction, alteration, and use of structures and land.
“This ordinance is adopted for the purpose of: protecting the public health, safety, comfort, convenience and general welfare; dividing the unincorporated portions of the county into zones and districts and regulating therein the location, construction, reconstruction, alteration and use of structures and land;”
Zoning districtsPublished (with conditions)
County zoning districts outside incorporated municipal limits.
The county page links a Zoning Ordinance and a Zoning Map.
The zoning ordinance applies to areas outside incorporated municipal limits.
“The purpose of the Zoning Ordinance is to promote health, safety, order, convenience and general welfare, by regulating the use of land, the location and the use of buildings and the arrangement of buildings on lots, the density of population and the division of the county into districts for the orderly future development of the area of Martin County, Minnesota, or parts thereof outside the incorporated limits of the municipalities.”
One more reviewed finding on this topic
Published — County zoning districts outside incorporated municipal limits.
“The purpose of the Zoning Ordinance is to promote health, safety, order, convenience and general welfare, by regulating the use of land, the location and the use of buildings and the arrangement of buildings on lots, the density of population and the division of the county into districts for the orderly future development of the area of Martin County, Minnesota, or parts thereof outside the incorporated limits of the municipalities. [...] document Header Zoning Map.pdf”
Who permits septicCounty (with conditions)
Subsurface sewage treatment system installation and compliance administration in Martin County.
The county page also states that county and state regulations apply.
Licensed septic system designers, inspectors, and installers must be used when upgrading or replacing systems.
“Martin County Planning and Zoning permits and inspects the installation of septic systems to ensure that systems meet all regulatory requirements.”
2 more reviewed findings on this topic
County (with conditions) — Subsurface sewage treatment systems in Martin County.
“Martin County Planning and Zoning permits and inspects the installation of septic systems to ensure that systems meet all regulatory requirements. County and state regulations require urban and rural residences and businesses to replace systems that do not properly treat effluent.”
County (with conditions) — Subsurface sewage treatment systems in Martin County.
“Martin County Planning and Zoning permits and inspects the installation of septic systems to ensure that systems meet all regulatory requirements. County and state regulations require urban and rural residences and businesses to replace systems that do not properly treat effluent.”
Septic permitRequired
Installation of septic systems in Martin County.
The county states that Planning and Zoning permits septic-system installation.
County and state regulatory requirements apply.
“Martin County Planning and Zoning permits and inspects the installation of septic systems to ensure that systems meet all regulatory requirements.”
2 more reviewed findings on this topic
Required — Installation of septic systems in Martin County.
“permits [...] the installation of septic systems”
Required — Installation of septic systems in Martin County.
“Martin County Planning and Zoning permits and inspects the installation of septic systems to ensure that systems meet all regulatory requirements.”
Septic inspectionRequired
Installation of septic systems in Martin County.
The county states that Planning and Zoning inspects septic-system installation.
Licensed septic system inspectors must be used when upgrading or replacing septic systems.
“Martin County Planning and Zoning permits and inspects the installation of septic systems to ensure that systems meet all regulatory requirements. [...] Licensed septic system designers, inspectors and installers must be used when upgrading or replacing septic systems in Martin County.”
2 more reviewed findings on this topic
Required — Installation of septic systems in Martin County.
“inspects the installation of septic systems”
Required — Installation of septic systems in Martin County.
“Martin County Planning and Zoning permits and inspects the installation of septic systems to ensure that systems meet all regulatory requirements.”
Permit processPartial
County-administered building-permit process in unincorporated Martin County.
The county directs applicants to contact Planning and Zoning for information on how to apply.
Applicants inside incorporated city limits are directed to the local city clerk.
Application forms, review times, and fee amounts were not verified.
“Please contact the Martin County Planning & Zoning Department for information on how to apply for a BUILDING PERMIT”
2 more reviewed findings on this topic
Partial — Martin County building-permit application process.
“for information on how to apply for a BUILDING PERMIT”
Partial — County building-permit process for work outside incorporated city limits.
“Please contact the Martin County Planning & Zoning Department for information on how to apply for a BUILDING PERMIT”
An owner of residential real estate who personally builds or improves residential real estate, as an exemption from the residential contractor licensing requirement.
The owner must occupy or intend to occupy the residential real estate for residential purposes, or retain ownership for rental purposes after completion.
The exemption does not apply when the owner constructs or improves residential real estate for resale or speculation.
An owner is presumed to be building or improving for speculation if the owner constructs or improves more than one property within any 24-month period, unless the properties will be retained for rental purposes.
This is a contractor-licensing exemption and does not waive applicable building permits, inspections, or certificates of occupancy.
speculation presumption threshold: > 1 additional property within 24 months (The presumption does not apply if the properties will be retained by the owner for rental purposes.)
“The license requirement does not apply to: [...] an owner of residential real estate who builds or improves residential real estate”
One more reviewed finding on this topic
Available — Homeowners performing all or part of work on their own property or buildings under the Minnesota State Building Code.
“Answer: A homeowner can choose to do all or any portion of work they want on their own property/building(s). The building code does not require homeowners to hire building contractors.”
Building code adoptedAdopted (with conditions)
Construction, reconstruction, alteration, repair, and use of buildings and other structures of the type governed by the Minnesota State Building Code throughout Minnesota.
The State Building Code supersedes the building code of any municipality.
The State Building Code does not apply to agricultural buildings except for the state inspections and rulemaking identified in Minnesota Statutes section 326B.121, subdivision 1, paragraph (c), clause (1), and the structural-support requirement for translucent panels or other skylights without raised curbs in clause (2).
The 2020 Minnesota State Building Code is effective March 31, 2020, except the Minnesota Mechanical Fuel Gas Code, which is effective April 6, 2020.
Municipal enforcement generally requires adoption by local ordinance, subject to statutory requirements for certain municipalities and statutory enforcement responsibilities where no adoption ordinance is in effect.
The 2024 Minnesota Commercial Energy Code is effective January 5, 2024.
Requirements for adult changing stations are effective August 15, 2025, and requirements for window-cleaning safety features are effective November 7, 2025, according to the Department of Labor and Industry update page.
2020 Minnesota State Building Code effective date: 2020-03-31 (Minnesota Mechanical Fuel Gas Code effective 2020-04-06) · 2024 Minnesota Commercial Energy Code effective date: 2024-01-05 · Adult changing station supplement effective date: 2025-08-15 · Window-cleaning safety feature supplement effective date: 2025-11-07
“(a) The State Building Code is the standard that applies statewide for the construction, reconstruction, alteration, repair, and use of buildings and other structures of the type governed by the code.”
3 more reviewed findings on this topic
Adopted (with conditions) — Construction, reconstruction, alteration, repair, and use of buildings and structures governed by the Minnesota State Building Code, including unincorporated Martin County.
“The State Building Code is the standard that applies statewide”
Partial — Minnesota State Building Code as it relates to Martin County and its municipalities.
“The Minnesota State Building Code is the minimum construction standard throughout all of Minnesota including all cities, townships and counties. Although it isn't enforceable by municipalities unless it is adopted by local ordinance, the State Building Code creates a level playing field for the construction industry by establishing the construction standard for all buildings in the state.”
Partial — Construction in Martin County subject to the Minnesota State Building Code.
“The 2020 Minnesota State Building Code is effective March 31, 2020, except for the Minnesota Mechanical Fuel Gas Code, which is effective April 6, 2020. It is the minimum construction standard throughout all of Minnesota. Although it is not enforceable by municipalities unless it is adopted by local ordinance, it creates a level playing field for the construction industry by establishing the Minnesota State Building Code as the standard for the construction of all buildings in the state.”
InspectionsRequired
Construction or work for which a Minnesota State Building Code permit is required.
The work must remain accessible and exposed until approved.
The permit applicant must cause the work to remain accessible and exposed for inspection.
The building official identifies required inspections; the permit holder must maintain the inspection record card until final approval.
Work may not proceed beyond each successive inspection point without building-official approval; noncomplying portions must be corrected and may not be covered or concealed until authorized.
“Construction or work for which a permit is required is subject to inspection by the building official”
One more reviewed finding on this topic
Required — Projects for which a Minnesota State Building Code building permit is issued.
“Answer: Yes. Some form of on-site compliance inspection is required whenever a building permit is issued. The SBC specifically defines inspections that are required. It also gives the building official the ability to require more specific conditions of inspection - or even the hiring of specialized inspectors for various complex building designs/elements.”
Certificate of occupancyLimited
Use or occupancy of buildings and structures, and changes in existing occupancy classification, in Minnesota jurisdictions administering and enforcing the State Building Code.
A building or structure may not be used or occupied, and an existing occupancy classification may not be changed, until the building official issues a certificate of occupancy under Minnesota Rules part 1300.0220.
The rule applies through the building official and therefore depends on the relevant jurisdiction administering and enforcing the State Building Code.
Issuance of a certificate of occupancy is not approval of a violation of the code or other municipal ordinances; a certificate purporting to authorize violation or cancellation of those requirements is invalid.
A municipality has the option of requiring certificates of occupancy for U occupancies constructed under the International Building Code, accessory structures constructed under the International Residential Code, and used manufactured homes moved into or within a jurisdiction.
Legal occupancy of a structure existing on the date of code adoption may continue without change.
A temporary certificate may be issued before all permitted work is complete if the occupied portion can be occupied safely; the building official sets its validity period.
optional certificate category: U occupancies constructed under the International Building Code (municipality has the option of requiring a certificate) · optional certificate category: accessory structures constructed under the International Residential Code (municipality has the option of requiring a certificate) · optional certificate category: used manufactured homes moved into or within a jurisdiction (municipality has the option of requiring a certificate)
“No building or structure shall be used or occupied, and no change in the existing occupancy classification of a building, structure, or portion of a building or structure shall be made until the building official has issued a certificate of occupancy for the building or structure under this part.”
One more reviewed finding on this topic
Required — Use or occupancy of buildings governed by the Minnesota Building Code, subject to the listed municipal exceptions.
“until the building official has issued a certificate of occupancy”
Camping on your landLimited
Private or public areas accommodating five or more tents or recreational camping vehicles on a daily, nightly, weekly, or longer basis
An annual license from the Minnesota Department of Health is required before establishing, maintaining, conducting, or operating a recreational camping area.
The license requires application, payment of the statutory fee, and approval for operation including plan review.
A recreational camping area excludes children's camps, industrial camps, migrant labor camps, United States Forest Service camps, state forest service camps, qualifying state wildlife-management or state-owned public-access areas, qualifying temporary holding areas adjacent to motorsports facilities, and a privately owned area used by a private club no more than once annually and no longer than seven consecutive days.
A special event recreational camping area operates no more than two times annually and for no more than 14 consecutive days.
The statute does not resolve local zoning or land-use requirements.
minimum accommodated tents or recreational camping vehicles: >= 5 units (Statutory exclusions apply.) · special event operating frequency: <= 2 times annually (Special event recreational camping area.) · special event duration: <= 14 consecutive days (Special event recreational camping area.) · annual license base fee for recreational camping area with 24 or fewer sites: 100 USD (Additional $8 per licensed site; special event areas are excluded from that per-site paragraph.) · annual license base fee for recreational camping area with 25 to 99 sites: 410 USD (Additional $8 per licensed site; special event areas are excluded from that per-site paragraph.) · annual license base fee for recreational camping area with 100 or more sites: 610 USD (Additional $8 per licensed site; special event areas are excluded from that per-site paragraph.)
“"Recreational camping area" means any area, whether privately or publicly owned, used on a daily, nightly, weekly, or longer basis for the accommodation of five or more tents or recreational camping vehicles free of charge or for compensation. [...] "Special event recreational camping area" means a recreational camping area which operates no more than two times annually and for no more than 14 consecutive days. [...] No person, firm or corporation shall establish, maintain, conduct or operate a manufactured home park or recreational camping area within this state without first obtaining an annual license from the state Department of Health.”
Tiny homesLimited
Construction and residential use of tiny houses statewide, subject to the Minnesota State Building Code and applicable municipal zoning ordinances.
The Minnesota State Building Code applies statewide to construction of buildings, including tiny houses.
Municipal zoning ordinances vary by municipality and regulate land use, location, height, width, foundation type, number of stories, and building size.
The jurisdiction must be consulted for local zoning specifics.
Tiny houses used as dwelling units must comply with the Minnesota Residential Code unless otherwise stated in Appendix Q.
A tiny house is a dwelling of 400 square feet or less in floor area, excluding lofts.
Applicable requirements include light, ventilation, heating, minimum room sizes, ceiling heights, sanitation, toilet, bath and shower spaces, emergency escape and rescue openings, means of egress, smoke alarms, and carbon monoxide alarms.
“The Minnesota State Building Code is the standard of construction that applies statewide for the construction of buildings (MS 326B.121) including tiny houses.”
Manufactured homesLimited
New manufactured homes installed for occupancy statewide in Minnesota
Inspection is required under Federal Installation Standards Programs, CFR 3285 and 3286.
Manufactured-home alterations require documentation submitted for review to the Department of Labor and Industry or the local authority having jurisdiction before work begins.
Local building officials and local code enforcement may apply depending on the municipality.
“All new manufactured homes installed in Minnesota for occupancy are required to be inspected according to the Federal Installation Standards Programs, Code of Federal Regulations (CFR) 3285 and 3286.”
Accessory dwellingsLimited
Temporary family health care dwellings used as a narrow accessory residential dwelling category statewide, where the municipality has not opted out of Minnesota Statutes § 462.3593.
The dwelling must be primarily assembled away from its installation site, be no more than 300 gross square feet, lack a permanent foundation, meet state-recognized accessibility standards, provide water and electric utilities, use compatible exterior materials, have at least R-15 insulation, be transportable by the specified truck types, comply with Minnesota Rules chapter 1360 or 1361 with the required seal and data plate or ANSI Code 119.2, and have a backflow check valve.
A caregiver or relative must apply for a municipal temporary dwelling permit with the required signatures and documentation, including provider-network proof, medical certification, septic-service documentation, adjacent-owner notice affidavit, and a site map.
The dwelling must be on property where the caregiver or relative resides, comply with setbacks and applicable floor-area-ratio limits, and permit safe and timely access for septic services and emergency vehicles.
Occupancy is limited to one identified mentally or physically impaired person, and only one temporary family health care dwelling is allowed per lot.
The dwelling must comply with applicable state law, local ordinances, and charter provisions unless otherwise provided.
The initial permit lasts six months and may be renewed once for an additional six months.
The municipality may inspect, revoke the permit for violations, and require removal within 60 days after revocation.
Unless otherwise provided by ordinance, the municipality may charge up to $100 for the initial permit and up to $50 for renewal.
The municipality may opt out of the statutory requirements by ordinance.
maximum dwelling area: <= 300 gross square feet · initial permit term: 6 months (renewable once for an additional six months) · maximum initial permit fee: <= 100 USD (unless otherwise provided by ordinance) · maximum renewal permit fee: <= 50 USD (unless otherwise provided by ordinance) · maximum occupants: 1 person (occupant must be a mentally or physically impaired person) · maximum dwellings per lot: 1 dwelling
“A temporary family health care dwelling that meets the requirements of this section cannot be prohibited by a local ordinance that regulates accessory uses or recreational vehicle parking or storage.”
One more reviewed finding on this topic
Limited — Accessory dwelling units statewide, including conversion of a structure into an ADU, subject to local zoning and Minnesota residential building-code requirements.
“Local zoning ordinances dictate if a tiny home or accessory dwelling unit (ADU) is allowed on the property.”
Off-grid sanitationLimited
Primitive dwellings using toilet-waste treatment devices in low dwelling-density areas, and privies governed by Minnesota SSTS rules.
Septage disposal by the owner must follow local ordinances.
If no local ordinance exists, septage must not be discharged to surface waters, drainageways, steeply sloping areas, or wet areas in a manner or volume harmful to the environment or public health or that creates a nuisance.
Material must be buried or covered with soil.
If site conditions do not meet the rule, solids disposal must be performed under the applicable rule by a licensed maintenance business.
Privy solids must be removed when the privy is filled to one-half capacity.
Abandoned pits must have sewage solids and contaminated soil removed and be filled with clean earth and slightly mounded.
“For primitive dwellings using toilet waste treatment devices in low dwelling density areas, septage disposal from these devices by the owner must be in accordance with local ordinances. If no ordinance exists, the septage must not be discharged to surface waters, drainageways, steeply sloping areas, or wet areas in a manner or volume that is harmful to the environment or public health or that creates a nuisance. The material must be buried or covered with soil.”
Well permitLimited
Construction of water-supply, dewatering, and environmental wells in Minnesota.
A well notification and applicable filing fee are generally required before construction; the statute describes notification rather than a general construction-permit requirement for these wells.
A drive-point water-supply well personally constructed by an individual on owned or leased property for farming, agricultural purposes, or the individual's place of abode must be reported within ten days after completion, and no notification fee may be charged.
The notification requirement preempts local permits and notifications unless the commissioner has delegated permitting or notification authority under section 103I.111.
If operation of the well requires a Minnesota Department of Natural Resources appropriation permit, specified information must be submitted to the commissioner of natural resources and construction may begin after preliminary approval.
A well that is not in use must be sealed or have a maintenance permit, subject to the statutory environmental/dewatering-well exception.
drive-point well notification deadline: 10 days after completion (personally constructed by an individual on owned or leased property for farming, agricultural purposes, or the individual's place of abode) · unused well status: sealed or maintenance permit (environmental or dewatering wells not sealed by 14 months after completion require an annually renewed maintenance permit)
“Except as provided in paragraph (d), a person may not construct a water-supply, dewatering, or environmental well until a notification of the proposed well on a form prescribed by the commissioner is filed with the commissioner with the filing fee in section 103I.208, and, when applicable, the person has met the requirements of paragraph (e).”
Agricultural exemptionAvailable (with conditions)
Agricultural buildings statewide that meet the definition in Minnesota Statutes § 326B.103, subdivision 3.
The structure must be on agricultural land as determined by the governing assessor for the municipality or county under section 273.13, subdivision 23.
The structure must be designed, constructed, and used to house farm implements, livestock, or agricultural products under section 273.13, subdivision 23.
The building must be used by the owner, lessee, and sublessee and members of their immediate families, employees, and persons engaged in pickup or delivery of agricultural products.
The State Building Code does not apply except with respect to state inspections required or rulemaking authorized by sections 103F.141, 216C.19, subdivision 9, and 326B.36.
Translucent panels or other skylights without raised curbs must be supported to have equivalent load-bearing capacity as the surrounding roof.
“The State Building Code is the standard that applies statewide for the construction, reconstruction, alteration, repair, and use of buildings and other structures of the type governed by the code. [...] (c) The State Building Code does not apply to agricultural buildings except: (1) with respect to state inspections required or rulemaking authorized by sections 103F.141; 216C.19, subdivision 9; and 326B.36; and (2) translucent panels or other skylights without raised curbs shall be supported to have equivalent load-bearing capacity as the surrounding roof.”
Subdividing landRegulated (with conditions)
Subdivision regulation by Minnesota municipalities that adopt subdivision regulations under Minnesota Statutes section 462.358.
A municipality may adopt subdivision regulations by ordinance; the statute does not establish one uniform ordinance applicable to every municipality.
Regulations may apply only to certain classes or kinds of subdivisions and must be uniform for each class or kind.
A municipality may extend its subdivision regulations to unincorporated territory within two miles of its limits, subject to the statutory exception for towns that have adopted subdivision regulations.
Regulations may address lot size, location, grading, improvements, utilities, site planning, floodplains, shorelands, soils, water, vegetation, energy, air quality, and geologic and ecological features.
Regulations may prohibit certain classes or kinds of subdivisions when consistent with the comprehensive plan and statutory purposes.
All subdivisions creating five or more lots or parcels that are 2-1/2 acres or less in size must be platted when subject to the municipal subdivision regulations.
municipal extension distance: <= 2 miles (Unincorporated territory; not in a town which has adopted subdivision regulations.) · mandatory platting threshold: >= 5 lots or parcels (Each lot or parcel is 2-1/2 acres or less in size.) · maximum parcel size for mandatory platting: <= 2.5 acres (Applies to subdivisions creating five or more lots or parcels.)
“a municipality may by ordinance adopt subdivision regulations establishing standards, requirements, and procedures for the review and approval or disapproval of subdivisions.”
Driveway accessRequired
Direct driveway connections to or from Minnesota state highways and work within MnDOT right-of-way.
A permit is required before constructing or modifying a direct driveway connection to or from a state highway.
The requirement covers agricultural, single-family residential, commercial, industrial, recreational, public, institutional, natural-resource, and multiple-family residential uses, and privately owned streets.
A new driveway, including a temporary driveway, requires a permit.
Modifying an existing driveway or changing its use or major traffic pattern may require a new permit.
The application should be submitted by the property owner; an agent, tenant, contractor, or developer must include written authorization from the owner.
This claim does not establish driveway-permit requirements for roads outside MnDOT jurisdiction.
“A MnDOT Access Driveway Permit is required before a direct driveway connection to or from a state highway is constructed or modified.”
2 more reviewed findings on this topic
Limited — Additional ingress to or egress from a public highway for property with a right of direct private access.
“The owner or occupant of property abutting upon a public highway, having a right of direct private access thereto, may provide such other or additional means of ingress from and egress to the highway as will facilitate the efficient use of the property for a particular lawful purpose, subject to reasonable regulation by and permit from the road authority as is necessary to prevent interference with the construction, maintenance and safe use of the highway and its appurtenances and the public use thereof.”
Required — Changes in access to or from a MnDOT right-of-way, including driveway or other access points to a trunk highway, and changes in property use affecting such access.
“An Access / Driveway Permit is required whenever there is a request for change in access to or from a Minnesota Department of Transportation (MnDOT) right-of-way or a change in use of the property.”
Building in a floodplainRequired
Construction and fill in regulated Minnesota floodplain areas, including houses, fill, culverts, and bridges.
Projects must comply with the community floodplain management ordinance.
For unincorporated areas, the county zoning authority generally administers the rule; cities generally administer within city boundaries; some townships administer floodplain permits and zoning.
In flood-fringe areas, residential buildings must place the lowest floor, including the basement, above the flood protection elevation.
The flood protection elevation is one foot above the 100-year flood plus any stage increase from flood-fringe designation; local communities may require a higher elevation.
If maps do not delineate floodway and flood fringe, the applicant may need engineering information verifying the flood protection elevation and that the site is outside the floodway.
minimum lowest-floor elevation above 100-year flood: >= 1 foot (plus any stage increase due to designation of flood fringe areas)
“Such projects as building a house, placement of fill, or installing a culvert or bridge would all require a floodplain permit.”
2 more reviewed findings on this topic
Required — Building a house, placing fill, or installing a culvert or bridge in portions of a Minnesota floodplain.
“Construction and fill is generally permitted in portions of the floodplain, provided they adhere to their community’s floodplain management ordinance. Such projects as building a house, placement of fill, or installing a culvert or bridge would all require a floodplain permit.”
Limited — Dwellings, enclosed structures, fill, or obstruction of flood flows within a mapped Minnesota floodway.
“If the property a person owns or is interested in buying lies within this mapped floodway, they will not be permitted to construct a dwelling or other enclosed structure, place fill material, or obstruct flood flows in any other way.”
Permit feesVariable (with conditions)
Building permit fees under the Minnesota State Building Code, as administered by local building departments.
Fees are established by the local building department and are not supplied as one statewide fee schedule.
Fees must be commensurate with services provided and reasonable, fair, and proportionate to actual service costs.
Fees may include building permit, plan review, state surcharge, electrical, plumbing, heating/mechanical, septic, and sewer and water fees.
Permit fees are generally based on construction valuation and/or a fee for service.
The applicant must provide an estimated construction valuation, subject to verification by the building official.
Municipal fee schedules may include special investigation, penalty, reinspection, plan-review, fixed, and refund-policy fees.
“It is for this reason that the building code does not specifically identify or provide for a fee schedule to be used by a jurisdiction. Each municipality is to evaluate local costs associated with the enforcement of the code.”
2 more reviewed findings on this topic
Variable (with conditions) — Building-permit fee structure under Minnesota State Building Code administration, including Martin County if the code is locally administered.
“Minnesota Rule requires building permit fees to be established at a rate that is commensurate with the services being provided by the local building department. The rule also states that the fees are to be reasonable, fair, and proportionate to the actual costs of the services being provided. It is for this reason that the building code does not specifically identify or provide for a fee schedule to be used by a jurisdiction.”
Variable (with conditions) — Minnesota State Building Code permit fees administered by adopting local municipalities.
“Permit fees are to be determined and established by the local municipality. Permit fees must be established so that they cover all costs associated with administration and enforcement the State Building Code - to run a functioning building department. Permit fees can be developed on a “fixed fee” basis and on a construction “value” type of sliding fee schedule, or a combination of both.”
county zoning authorityLimited
County planning and zoning authority over unincorporated areas of Minnesota.
The authority applies to a county having less than 300,000 population according to the 1950 federal census.
The statute authorizes county planning and zoning activities generally within the qualifying counties; it does not identify a separate unincorporated-area limitation in this section.
Except as otherwise provided, a county regardless of population must not enact, amend, or enforce an ordinance eliminating or terminating a lawful use by amortization.
The amortization prohibition does not apply to adults-only bookstores, adults-only theaters, or similar adults-only businesses as defined by ordinance.
The amortization subdivision does not prohibit nuisance-prevention or nuisance-abatement enforcement or elimination of a use determined to be a public nuisance without payment of compensation.
population threshold: < 300000 persons (According to the 1950 federal census)
“having less than 300,000 population according to the 1950 federal census is authorized to carry on county planning and zoning activities.”
county building authorityGeneral
Minnesota counties may administer and enforce the State Building Code within their jurisdiction by ordinance; this includes a county's authority over residential construction in unincorporated county territory, subject to the statutory limits on code application and local provisions.
The statutory authorization is to administer and enforce the State Building Code, rather than a county-specific building code.
A county that is not already required by Minnesota Statutes § 326B.121, subdivision 2(a), to administer and enforce the code may elect to do so by ordinance.
The State Building Code applies statewide to construction, reconstruction, alteration, repair, and use of buildings and structures governed by the code.
The State Building Code does not apply to agricultural buildings except for state inspections or rulemaking authorized by Minnesota Statutes §§ 103F.141, 216C.19, subdivision 9, and 326B.36, and except that translucent panels or other skylights without raised curbs must have equivalent load-bearing capacity as the surrounding roof.
A municipality may not require building-code provisions regulating structural components or systems that differ from the State Building Code; with state building official approval, it may adopt a more restrictive ordinance where geological conditions warrant it.
A municipality may enforce the State Building Code through lawful means, including contracts with other municipalities or qualified individuals; building-permit fees may be retained or remitted to reimburse them.
“If a municipality is not required by paragraph (a) to administer and enforce the State Building Code, the municipality may choose to administer and enforce the State Building Code within its jurisdiction by adopting the code by ordinance.”
Set by your town or city, not the county
In Minnesota, zoning is adopted by each town or city, so Martin County has no county-wide answer on these. Find your town or city in the list of places on this page, or call its clerk or zoning administrator.
Minimum dwelling size
Minimum lot size
Setbacks
Lot coverage
Building height
Living in an RV
Short-term rentals
Still unanswered
We looked and could not find an official answer yet. Silence is not permission — ask the county directly.
Mandatory utility hookup — Water and sewer connection requirements for buildings in Martin County.
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.
Living off-grid in Martin County, Minnesota
Is Martin County a good place to live off-grid or homestead?
Martin County scores 56/100 on the Bolthole Index, a solid county profile. Its strengths: sparse surroundings — about 12,250 people within a 30-minute drive and a stronger property-autonomy legal backdrop. Watch-outs: workable self-sufficiency basics (31.8″/yr rainfall).
Do you need a building permit in Martin County, Minnesota?
Martin County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Martin County Planning & Zoning (SSTS Program). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.
How much does land cost in Martin County, Minnesota?
Land in Martin County runs about $8,968 per acre, based on the latest county data.
What is the water situation in Martin County?
Martin County gets about 31.8" of rain a year, with severe drought in roughly 12.8% of years.
How remote is Martin County?
A representative private-land location has about 12,250 people within a 30-minute drive and 1,109,382 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.
