Indiana
Buying Land in Miami County, Indiana
Seat Peru, in north-central Indiana. Miami County has adopted countywide zoning through its own Plan Commission -- and, because Grissom Air Reserve Base straddles Miami and Cass Counties, Miami County maintains its own separate Grissom Air Reserve Base Overlay District, distinct from Cass County's own overlay for the base's southern side.
Zoning: countywide, through the Miami County Plan Commission
Miami County has adopted countywide planning and zoning under Indiana's optional IC 36-7-4 framework. The Miami County Plan Commission -- an advisory body to the Board of County Commissioners, based in Room 101 at the Miami County Courthouse, 25 N. Broadway, Peru -- reviews subdivision plats and rezoning petitions and conducts comprehensive land-use planning countywide. The current Zoning Ordinance was last comprehensively updated in 2001, and the county's Comprehensive Plan was updated more recently, in 2015; a separate Subdivision Control Ordinance governs how land is divided into new lots.
As of mid-2026, the Board of Commissioners was actively considering a new proposed ordinance specifically addressing the review, processing, and approval of data center development applications and permits, reflecting the same statewide wave of data-center-related zoning activity this project has documented in other Indiana counties (Boone County's moratorium and energy-overlay ordinance, for instance). Confirm the current status of any Miami County data-center ordinance directly if that's relevant to a specific parcel or project.
Grissom Air Reserve Base: Miami County's own overlay district, not Cass County's
Grissom Air Reserve Base sits roughly 10 miles south of Peru and straddles two counties -- Cass and Miami. Cass County's own zoning ordinance, covered in a separate hub on this site, includes its own Grissom Air Force Overlay District for the base's Cass County side. Miami County maintains a distinct, separately adopted overlay of its own: a Grissom Air Reserve Base Overlay District created through a Sitting Ordinance dated September 24, 2018, backed by a dedicated Miami County Grissom ARB Height District Map and a Miami County Grissom ARB Accident Potential and Noise Zones Map. These aren't generic labels -- they're specific zoning tools tied to the base's operational geometry on the Miami County side of the installation.
The base's own Operational Areas Action Plan describes land-use compatibility goals specific to several named zones around the installation, including the North Clear Zone, South Clear Zone, VORTAC (navigational aid) standoff areas, taxiways, and the runway primary surface -- each carrying different height, use, and density expectations under the overlay. A buyer evaluating land anywhere near the base's Miami County side should confirm which of these specific sub-zones a parcel falls within, since height and use restrictions can differ meaningfully between them, and should not assume that information covered on this site's Cass County page applies here -- the two counties maintain genuinely separate overlay ordinances tied to different sides of the same installation. See our dedicated zoning page for Miami County for more on the Height District and Accident Potential/Noise Zone maps specifically.
Septic and other departments to know
The Miami County Health Department's Environmental Health function, based at the Miami County Annex Building, 25 Court Street, Peru, (765) 473-0283, issues septic permits under Indiana's statewide ISDH 410 IAC 6-8.3 rule. An applicant must submit a site plan showing home location, floor plans, outbuildings, well location, soil borings, property lines, easements, flood zones, and the proposed system layout with distances and grade elevations; the department then visits the site to verify the submitted information before issuing a permit, which is valid for one year from issuance.
The Miami County Assessor and Recorder, both based at the Miami County Courthouse in Peru, handle property valuation and recorded deeds, easements, and plats respectively. Given the county's active Grissom overlay and pending data-center zoning discussion, confirm both current zoning district and any overlay-specific restriction on a specific parcel before relying on an older plat or listing description -- particularly for land near Peru or the base's Miami County boundary.
Who to Call Before Buying Land in Miami County
Direct WebFetch access to miamicountyin.gov was blocked by a network egress restriction throughout this research pass, so department details reflect search-indexed content rather than a full verbatim read -- confirm current staff, hours, and fees directly. This page treats Miami County's Grissom Air Reserve Base Overlay District as genuinely distinct from Cass County's own separate overlay for the base, since the base straddles both counties under two independently adopted ordinances.
Planning & Zoning
Miami County Plan Commission
Zoning verification for unincorporated Miami County, including Grissom Air Reserve Base Overlay District boundaries and sub-zone (Clear Zone, VORTAC standoff, taxiway) status for a specific parcel.
Building & Permitting
Miami County Plan Commission
Building permits in unincorporated Miami County.
Environmental Health
Miami County Health Department
General environmental health questions for Miami County.
Septic / Onsite Wastewater
Miami County Health Department
Septic permits under ISDH 410 IAC 6-8.3.
Assessor / Property Tax
Miami County Assessor
Property valuation and assessment records.
Recorder / Clerk / Land Records
Miami County Recorder
Recorded deeds, easements, and plats for a specific parcel.
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Get local guidanceTopics Specific to Miami County
Sources
- Miami County Plan Commission — Miami County, Indiana Government (accessed 2026-09)
- Plans & Ordinances — Miami County, Indiana Government (accessed 2026-09)
- County Of Miami Zoning Ordinance (PDF) — Miami County, Indiana Government (accessed 2026-09)
- Grissom Air Reserve Base Overlay District Sitting Ordinance (09-24-2018) — Miami County, Indiana Government (accessed 2026-09)
- Grissom Air Reserve Base — Miami County, Indiana Government (accessed 2026-09)
- Proposed Data Center Ordinance & Moratorium — Miami County, Indiana Government (accessed 2026-09)
- Acquire a Septic Permit — Miami County, Indiana Government (accessed 2026-09)
- Grissom Air Reserve Base — Wikipedia (accessed 2026-09)
Last reviewed 2026-09