Bolthole Index

DeKalb County, Indiana

Zoning, building permits and septic rules in Union Township, Indiana

Union Township is a township in DeKalb County, Indiana. 9 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the DeKalb County page.

Answers from the rulebook for Union Township

Rules another office applies inside Union Township

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

  • Local zoningPresent (with conditions)

    Land inside Union township, DeKalb County, Indiana, outside any city or town planning jurisdiction; county UDO zoning applies there because no township zoning was found

    • Applies only where Union township has not adopted its own zoning; no township zoning ordinance was located.
    • Excludes land within the legally established planning jurisdiction of Auburn or any other city or town; those parcels follow that municipality's rules.
    • The opened copy is the UDO text printed with a 2008 copyright; a later UDO revision is listed on the county document center but was not opened.
    “this unified development ordinance applies to all land within the county limits of dekalb county, indiana, excluding the legally established planning jurisdiction of the cities and towns within dekalb county.”
  • Zoning districtsPublished (with conditions)

    Zoning district list for land inside Union township outside any city or town planning jurisdiction (county UDO article two)

    • Districts listed in the UDO table of contents include OP, A1 to A4, RE, R1 to R3 and M1 and later districts; only the A1 and R1 standards were opened.
    • Opened text is the 2008 printing.
    “article two: zoning districts 2.01 op district intent, permitted uses and special exception uses”
  • Minimum dwelling sizeSpecified

    A1 conservation agricultural district land inside Union township outside any city or town planning jurisdiction (county UDO section 2.04)

    • Source text is the 2008 printing.

    minimum dwelling size: >= 1200 square feet

    “minimum dwelling size: • 1,200 square feet”
  • Minimum lot sizeSpecified

    A1 conservation agricultural district land inside Union township outside any city or town planning jurisdiction (county UDO section 2.04)

    • Minimum lot width 160 feet and minimum lot frontage 120 feet, or 40 feet where the lot is designed to conserve land used for agricultural crop production (same section, not separately cited as a claim).
    • Source text is the 2008 printing.

    minimum lot area: >= 2 net acres (1 acre if connected to municipal sanitary sewer; excludes dedicated rights-of-way and recorded easements)

    “minimum lot area: • 2 net acres (not including any dedicated rights-of-way and recorded easements) • 1 acre if connected to municipal sanitary sewer”
    One more reviewed finding on this topic
    • Specified — R1 low density residential district land inside Union township outside any city or town planning jurisdiction (county UDO section 2.14)
      “minimum lot area: • 2 net acres (not including any dedicated rights-of-way and recorded easements) or 15,000 square feet with municipal sanitary sewer”
  • SetbacksSpecified

    A1 conservation agricultural district land inside Union township outside any city or town planning jurisdiction (county UDO section 2.04)

    • Front, side and rear setbacks as quoted; accessory and primary structures differ as stated.
    • Source text is the 2008 printing.

    front yard setback, primary and accessory: >= 50 feet · side yard setback, primary: >= 30 feet · side yard setback, accessory: >= 10 feet · rear yard setback, primary: >= 30 feet · rear yard setback, accessory: >= 10 feet

    “minimum front yard setback: • 50 feet for primary and accessory structures minimum side yard setback: • 30 feet for primary structures • 10 feet for accessory structures minimum rear yard setback: • 30 feet for primary structures • 10 feet for accessory structures”
  • Lot coverageSpecified

    A1 conservation agricultural district land inside Union township outside any city or town planning jurisdiction (county UDO section 2.04)

    • Measured against lot area; impervious surface coverage.

    maximum impervious surface coverage: <= 15 percent of lot area

    “maximum impervious surface coverage: • 15% of the lot area”
  • Building heightSpecified

    A1 conservation agricultural district land inside Union township outside any city or town planning jurisdiction (county UDO section 2.04)

    • Height measured per the UDO height diagram (flat roof from highest section; pitched roof from highest point); chimneys exempt per the same section.
    • Source text is the 2008 printing.

    maximum structure height, primary: <= 40 feet · maximum structure height, accessory: <= 30 feet

    “maximum structure height: • 40 feet for the primary structure • 30 feet for accessory structure”
  • Subdividing landRegulated (with conditions)

    Subdivision of land inside Union township outside any city or town planning jurisdiction; the county UDO article six is the subdivision control ordinance

    • Subdivision standards are in UDO article 6, not opened in this research.
    • Applies only where the county UDO governs (see local-zoning-county-udo-applies).
    “articles 2, 3, 4, and 5 are exclusively zoning ordinance components. article 6 is exclusively a subdivision control ordinance component.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Union Township or DeKalb County directly.

  • Building permit — New home construction in Union township
  • Owner-builder exemption — Owner-builder exemption for a home built by its owner in Union township
  • Building code adopted — Which building code applies to new homes in Union township
  • Inspections — Building inspections for new homes in Union township
  • Certificate of occupancy — Certificate of occupancy for new homes in Union township
17 more unanswered
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit fees
  • Permit process

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Union Township publishes no rule on the point, not that none exists. DeKalb County’s page lists the county offices to call.

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