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

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.

• Building permitRequired

  New residential house construction on unincorporated land inside Union township

  • The county surveyor FAQ says plot plans are needed to receive permits from the county; the page does not list the separate building permit fee, plan review or inspection steps.
  • Construction inside the limits of Brownsburg, Plainfield or other incorporated towns follows that town's rules instead.

  “combines various features of the land including topography for design purposes to receive any permits from the county including residential house, septic and pond permits”

• Local zoningPresent (with conditions)

  Land inside Union township that is in unincorporated Hendricks County. The county zoning ordinance is the only zoning rule identified for this land; no Union township zoning ordinance was found.

  • The county Board of Zoning Appeals' jurisdiction is the unincorporated county plus four named towns (Amo, North Salem, Coatesville, Stilesville); the page does not list Union township by name.
  • Land inside Union township that lies within the limits of Brownsburg, Plainfield or another incorporated town is not covered by this county ordinance.
  • The county Plan Commission and planning pages list a 2008 zoning ordinance with a 2022 version and later amendments (for example ordinance 2025-31 amending the zoning ordinance); the current text was not opened.

  “the unincorporated county and the towns of amo, north salem, coatesville, and stilesville”

• Septic permitRequired

  Residential septic system installation on unincorporated land inside Union township

  • The county page names septic permits as county permits that need the plot plan; the application form, fee and state-rule details were not found on an official Hendricks County health page.
  • Land inside Brownsburg, Plainfield or other incorporated towns may be handled by another health office.

  “combines various features of the land including topography for design purposes to receive any permits from the county including residential house, septic and pond permits”

• Subdividing landRegulated (with conditions)

  Division of land inside unincorporated Union township

  • The county page lists a subdivision control ordinance (2025 date on the list); the ordinance text was not opened, so lot and road standards are not stated here.
  • Subdivisions inside incorporated towns follow those towns' rules.

  “subdivision control ordinance 2025 comprehensive plan 2008 zoning ordinance 2022”

• Permit feesPublished (with conditions)

  Planning and zoning fees for unincorporated land inside Union township

  • The county page links a fee schedule/ordinance; dollar amounts were not read and are not recorded here.

  “zoning ordinance 2022 fee schedule/ordinance”

Still unanswered

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

• Owner-builder exemption — Owner-builder permits for homes inside Union township
• Building code adopted — Building code used for new homes inside Union township
• Inspections — Building inspections for new homes inside Union township
• Certificate of occupancy — Certificate of occupancy for new homes inside Union township
• Zoning districts — Zoning district map and district list for land inside Union township

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.