Blog · October 14, 2026 · Ohio
Using the Union GIS Map
Most property questions near Tipp City start with a parcel lookup.
Main page: Miami County, OH GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Looking for lot lines and acreage around Huber Heights? Pulling up the Union GIS map gets you there fast, with no account needed. What this Union guide covers: which viewer to open, the fastest ways to search, and the limits worth knowing.
Getting started with the Union GIS map
Parcel maps here are usually run by the county, not the town, so for Union the go-to is the Miami County ArcGIS parcel map.
The viewer Miami County publishes
Begin with the Miami County ArcGIS parcel map; it covers each tax parcel from Huber Heights to Ludlow Falls. On ground around Potsdam, type a street address, an owner's name or a parcel number, then pick the result to center the map on it. Closer to Tipp City, the parcel card typically gives the owner of record, assessed acreage, a parcel ID and often a sale date.
What the map can't tell you
Tax maps are drawn for assessment, not surveyed, so a fence near Tipp City may sit some distance off the line on screen. For a tract near West Milton, owner names and values update on a schedule, so a deed recorded last month may not show yet.
When the map won't load
If the viewer stalls on a phone near Laura, try a desktop browser or clear the cache; links occasionally change, and our directory page keeps the current one.
Offices that can help
Deeds, mortgages and recorded plats for land near Tipp City are with the County Recorder, usually searchable by name or document number. Questions about what you can build around Potsdam are for the local planning and health departments, town or county, depending on location.
Backing up the map with records
Before you sign anything, request the recorded deed through the County Recorder; the parcel line is a drawing of it, whether the land is near Tipp City or elsewhere in the county. For property near Laura, have ready the document number shown in the record panel to skip a name search.
Union and the county around it
Union sits in Miami County, Ohio, and the county assessor maps its lots. On ground around Potsdam, the municipality handles things like zoning, permits and utilities within town limits, and the county still keeps the parcel and deed records. Lots just outside the town limits near Ludlow Falls often falls under county rules instead.
Land on the county line
Miami County borders Champaign County, Clark County, Darke County, Montgomery County, and Shelby County, all with their own assessor records. A tract near the line by Tipp City can show up in two county records, so look at the neighboring map too. If the land is near Ludlow Falls, the Platbookmapper state page lists every neighboring county map across Ohio.
Search tips
Addresses are the easiest route inside Union; owner names are usually entered last name first. For a tract near West Milton, a parcel ID is the most reliable search, and it's printed on tax bills.
Miami County in a few facts
Troy holds the county offices, where most land records are kept. Other places on the map include West Milton, Ludlow Falls, Tipp City, and Potsdam, each with its own cluster of lots. About 110,876 people live in Miami County (Census estimate, 2023) spread over about 407 square miles. Miami County was formed in 1807, and some chains of title near Tipp City are long.
On site with the map
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Laura, though signal can drop in rural spots. A saved image of the lot near Huber Heights and its lines helps when you meet an owner or agent.
Layers worth turning on
On ground around Ludlow Falls, look in the layer list for city limits, flood hazard, zoning or soils; availability varies.
Owner, value and acreage
Recent sales on nearby lots around Laura give a rough idea of values; an appraiser is the real authority.
Legal descriptions in Ohio
Rural deeds near Laura commonly use metes-and-bounds descriptions, listing bearings, distances and landmarks. Town lots near Laura usually use lot and block from a recorded plat instead, which is simpler to follow. Copy the legal description from the record for the parcel near Potsdam when you talk to a surveyor.
Keeping a record
Print or screenshot the parcel near Potsdam with its ID visible, so you have it when calling an office.
Quick answers
Where else can I find maps of Union?
Good question; Union may publish zoning or utility maps separately; the county viewer remains the main parcel source.
How accurate is the parcel map near Tipp City?
For most people, the map near Ludlow Falls isn't a survey; get a survey before a fence.
What layers does the parcel viewer have near Ludlow Falls?
Near West Milton, layer lists vary from one viewer to the next; open the layer list to see what's there.
How often is the parcel map updated for land near Tipp City?
It depends, but owner data near Ludlow Falls can lag new deeds by weeks.
Who keeps deeds for property in Union?
For land near Laura, assessment goes to the County Auditor and deeds to the County Recorder; planning offices cover zoning near Potsdam
Open the official Miami County, OH parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.