Methods for Finding Property Lines in Indiana
Indiana property owners have several tools available to research property lines, from online GIS viewers to physical corner monuments in the field. Understanding what each tool can and cannot tell you is essential before relying on any of them for fence placement, construction, or dispute resolution.
The key distinction every Indiana property owner should understand: GIS maps, online parcel viewers, and county assessor data are reference tools only. They show approximate boundary locations based on historical deed digitization. Only a licensed Professional Land Surveyor (PLS) can establish a legally authoritative property boundary.
IndianaMap Parcel Viewer
IndianaMap (indianamap.org) is Indiana's official statewide geographic information resource, maintained by the Indiana Geographic Information Office. The IndianaMap parcel layer displays parcel boundaries for most Indiana counties, derived from county assessor data and digitized deed records.
IndianaMap is a free, publicly accessible tool that gives Indiana property owners a starting point for understanding their property in geographic context. You can view approximate parcel boundaries, identify adjacent parcels and owners, and access links to county assessor data.
The important limitation: IndianaMap parcel data is not survey-accurate. Boundaries may be offset from their true legal positions by several feet or more due to digitization errors, old deed description ambiguities, and the inherent limitations of converting paper records to GIS coordinates. Use IndianaMap for orientation and general reference, not for placing stakes, building fences, or resolving disputes.
County Assessor GIS Portals
Every Indiana county maintains a property assessment system, and most counties have GIS portals that allow property owners to view parcel boundaries, access property records, and look up ownership information. These county portals are more current than IndianaMap in some cases because they are maintained by local assessor staff who update records after transfers and subdivisions.
Marion County (Indianapolis)
Marion County's property search and GIS is accessible through the Marion County Assessor's website. The portal lets you search by address or parcel number to view property boundaries, assessment data, and recorded parcel information. This is a useful starting point for Indianapolis property owners researching their lot dimensions before calling a surveyor.
Hamilton County (Carmel, Noblesville, Fishers)
Hamilton County has one of Indiana's more detailed online GIS platforms, reflecting the county's rapid development and active parcel management. The Hamilton County GIS viewer shows parcel boundaries, zoning, aerial imagery, and links to recorded plat information. Given Hamilton County's growth, most parcels have recent and relatively accurate digitized boundaries.
Allen County (Fort Wayne)
Allen County's assessor and GIS portal provide parcel boundary viewing with access to deed and plat records. The portal is accessible through the Allen County official website. Fort Wayne urban parcels tend to have well-documented histories that make GIS data reasonably aligned with actual boundaries, though a licensed survey is still required for legal purposes.
Other Indiana Counties
All 92 Indiana counties maintain assessor records with parcel data. Data quality and portal sophistication vary between counties. Rural counties with older deed histories may have more significant gaps between GIS parcel boundaries and actual legal positions. Check the IGIC directory at igic.org for links to county GIS resources across Indiana.
Indiana County Recorder: Recorded Plats and Deeds
The county recorder is the official repository for recorded plats and deeds in Indiana. These documents are the legal foundation of property ownership and boundary definition.
Subdivision Plats
If your property is in a platted subdivision, the subdivision plat shows the original lot dimensions, street widths, easements, and corner monument descriptions. This is the controlling document for your boundary. Most Indiana county recorders have digitized plat books available online or in person.
To find your plat:
- Identify your county recorder's website or office
- Search for your subdivision by name or locate your parcel through the assessor system to find the plat book and page reference
- Review the recorded plat for your lot dimensions, bearings, and monument descriptions
Deeds and Legal Descriptions
Your deed contains the legal description of your property. In platted subdivisions, this typically references the subdivision plat (e.g., Lot 14, Block 3, Greenwood Estates, Section 2, recorded in Plat Book 47, Page 22). In rural areas, descriptions are often metes and bounds, describing the boundary in terms of bearings and distances from established starting points.
Metes and bounds descriptions can be difficult to interpret without surveying knowledge. A licensed Indiana PLS reads these descriptions as part of their research process to reconstruct the original intended boundary.
Indiana Geographic Information Council (IGIC)
The Indiana Geographic Information Council (IGIC) at igic.org supports GIS data coordination across Indiana's state agencies, local governments, and communities. IGIC maintains resources for finding county GIS portals, understanding Indiana's geographic data standards, and connecting with the GIS community in the state.
IGIC is a useful resource for Indiana property owners who want to understand where to find authoritative parcel data for their specific county and how to interpret it correctly.
Survey Monuments in the Field
Physical survey monuments set by licensed PLS holders are the most direct evidence of property corners. In Indiana, monuments are typically iron pins (rebar with a plastic cap stamped with the surveyor's license number) or iron pipes. They are set at property corners and may also mark angle points along property lines.
How to look for monuments on your Indiana property:
- Check the corners of your lot, particularly at the sidewalk or curb line for front corners, and at the rear corners near the back fence line
- Use a metal detector to locate buried or grown-over pins
- Look for orange or pink surveyor's flagging tape that may mark recently set pins
- Check your prior deed or survey plat for monument type descriptions
If you find a monument, do not remove or disturb it. Survey monuments are protected by Indiana law. If a monument is missing, damaged, or appears to have been moved, contact a licensed Indiana PLS to evaluate and restore the corner.
The Difference Between GIS Data and a Legal Survey
This distinction matters enough to state clearly:
| Source | What It Shows | Legal Standing |
|---|---|---|
| IndianaMap parcel viewer | Approximate boundary from digitized deeds | None |
| County assessor GIS portal | Approximate boundary from assessor records | None |
| Recorded plat (subdivision) | Original surveyed lot dimensions and layout | High (controls within the plat) |
| Prior PLS survey | Boundary as determined by licensed surveyor | High (licensed, stamped, dated) |
| New PLS boundary survey | Current legal boundary determination | Definitive for legal purposes |
For everyday reference, understanding the general shape and location of your property, GIS tools are adequate. For fence installation near the property line, permit applications, resolving neighbor disagreements, or any legal proceeding, a licensed Indiana PLS survey is the only legally reliable tool.
When to Hire a Licensed Indiana PLS
Call a licensed Indiana PLS when:
- You cannot locate corner monuments in the field
- You are planning to build within 10 feet of a property line
- A neighbor disputes your fence or improvement location
- You are buying or selling land where boundaries are unclear
- You are subdividing a parcel
- You need to apply for a building permit and the municipality requires a site plan
- You want to confirm that existing improvements are within your property
Find licensed Indiana land surveyors organized by county in our Indiana land surveyor directory, with 113 professionals across the state.