The Blount County tax map is a parcel-level record of every taxable tract in the county, and you can view it online through the county’s GIS portal or in person at the Property Assessor’s office in the Maryville courthouse. The maps show boundaries, acreage, ownership, and appraised values, and they’re the same records the assessor uses to calculate your property tax bill. Knowing how to pull up a parcel and read what it shows lets you verify your own boundaries, compare your value against neighbors, and catch errors before an appeal deadline passes.
How to Look Up a Parcel
You can search three ways. The street address is the easiest starting point. Owner name works too, though common names return multiple hits.
The cleanest option is the parcel identification number, written in a Map-Group-Parcel format that uniquely identifies each tract. You’ll find it on your property tax bill or in the legal description on your recorded deed. Using the parcel ID avoids mix-ups with duplicate addresses or shared names and pulls up exactly the right record on the first try.
Using the Online GIS Portal
Blount County runs an interactive mapping application through its government site. The county’s maps page links to the ArcGIS-based portal where you search, view, and explore parcels.1Blount County, TN. Maps A separate site run by the Blount County GIS group offers PDF versions of individual tax maps.2Blount County GIS. Blount County GIS
Once the interactive map loads, type your search into the bar at the top. The map zooms to the parcel and highlights its outline. Click and drag to pan, use the on-screen buttons or your scroll wheel to zoom, and click any parcel to open a popup with the basic property data.
What the Parcel Record Shows
Selecting a parcel reveals acreage, boundary dimensions, and the appraised value of the land and any structures on it. Administrative fields usually include the owner’s name and mailing address, along with the assessment classification: residential, commercial, or agricultural.
The portal also lets you toggle layers over the parcel outlines:
- Aerial photography, showing actual ground conditions and structures.
- Topographic overlays, showing elevation changes that affect building and drainage.
- Flood zone layers drawn from FEMA data, showing whether a parcel sits in a Special Flood Hazard Area.
- Zoning layers, showing what the county permits on the tract.
Stacking these layers over the parcel outlines gives you a working picture of both the legal and physical shape of the property. If you’re checking your own tract, this is the moment to compare your appraised value with the values on similar neighboring parcels. A number that looks noticeably higher than comparable properties is worth raising with the assessor before the appeal window closes.
How the Map’s Numbers Become Your Tax Bill
Tennessee does not tax the full appraised value. The state applies an assessment ratio: 25% of appraised value for residential property and farmland, 40% for commercial and industrial property.3Blount County, TN. Property Assessor A home appraised at $300,000 has an assessed value of $75,000.
Blount County then applies its tax rate to that assessed value. The rate for 2025 is $1.59 per $100 of assessed value.4Blount County, TN. Property Tax On the $75,000 example above, the annual county property tax comes to $1,192.50. City taxes for Maryville, Alcoa, and other municipalities are calculated separately and added on top.
Blount County finished its most recent countywide reappraisal in 2023.5Tennessee Comptroller of the Treasury. Reappraisal Schedule During a reappraisal, the assessor updates appraised values to reflect current market conditions, so the figures you see on the tax map today should track recent sale prices.
Why a Rural Parcel May Show a Low Value
If you’re looking at a large rural tract and the appraised value looks surprisingly low, it may be enrolled in Tennessee’s greenbelt program. The Agricultural, Forest, and Open Space Land Act taxes qualifying land based on its current use rather than its highest potential market value, and the savings can be significant on farmland near growing suburbs.
To qualify as agricultural land, a tract must be at least 15 acres and actively used for agricultural production. Forest land also requires at least 15 acres, under a sustained yield management plan. Open space land needs only 3 acres but must serve a recognized public benefit such as conservation or recreation.6Tennessee Comptroller of the Treasury. Greenbelt
First-time applications are filed with the assessor by March 15. Approved parcels stay enrolled without reapplication unless ownership changes. A late application after a disqualification notice must be filed within 30 days with a $50 fee. No individual owner can place more than 3,000 acres under greenbelt within a single taxing jurisdiction.6Tennessee Comptroller of the Treasury. Greenbelt
Reading the Flood Zone Layer
The flood zone layer on the county portal pulls straight from FEMA’s Flood Insurance Rate Maps, and the designation on any given parcel has real financial consequences.
Parcels labeled Zone AE sit inside a Special Flood Hazard Area, the 100-year floodplain, meaning roughly a 1% chance of flooding in any given year. Lenders require flood insurance on properties in these zones, and FEMA sets a base flood elevation that structures generally must be built above.
Shaded Zone X marks moderate risk between the 100-year and 500-year floodplain boundaries. Unshaded Zone X is minimal risk, outside the 500-year floodplain. Flood insurance is not mandatory in either Zone X category, though owners can buy it voluntarily.
If you think your parcel was incorrectly placed in a Special Flood Hazard Area, you can apply to FEMA for a Letter of Map Amendment. The application requires an elevation certificate prepared by a licensed land surveyor or registered professional engineer showing the property sits at or above the base flood elevation. FEMA charges no fee for a LOMA and typically issues a determination within 60 days of receiving a complete submission.7FEMA. Letter of Map Amendment and Letter of Map Revision-Based on Fill Process A successful LOMA removes the mandatory flood insurance requirement.
If the Value on the Map Looks Wrong
Tennessee gives property owners a clear path to challenge an appraised value, and the portal’s comparison tools are the natural starting point. Pull up neighboring parcels with similar acreage, square footage, and condition, and screenshot or note the values that support your position.
Start informally by contacting the Blount County Property Assessor’s office. If that doesn’t resolve the issue, file a formal appeal with the county board of equalization. With limited exceptions, you must start at the county level; skipping it makes the assessment final.8Tennessee Comptroller of the Treasury. Value Appeals
If the county board rules against you, the next step is the State Board of Equalization. That appeal must be filed by August 1 of the tax year or within 45 days of the county board’s decision, whichever is later. The absolute cutoff is March 1 of the following year, after which the State Board loses jurisdiction to hear the case.8Tennessee Comptroller of the Treasury. Value Appeals
A few situations let you go directly to the state. The most common is when the assessor failed to send proper notice of a change in your assessment or classification. If notice was sent to your last known address fewer than 10 days before the county board adjourned, you can also skip the county level.
Getting Printed or Certified Copies
The online portal handles most everyday questions, but legal transactions, boundary disputes, and loan files sometimes require printed or certified maps. The Blount County Property Assessor’s office handles those requests.
Tennessee’s Public Records Act opens county records to personal inspection by any state citizen during business hours.9FindLaw. Tennessee Code Title 10 – 10-7-503 The assessor’s office is at 351 Court Street in the Blount County Courthouse in Maryville, open Monday through Friday from 8:00 a.m. to 4:30 p.m.3Blount County, TN. Property Assessor The office phone is 865-273-5850. Fees for copies vary by size and format, so call ahead for current pricing before you drive over.
If you submit a written request and the office can’t produce the records on the spot, state law gives them seven business days to provide the records, deny the request in writing with an explanation, or tell you how much time they need.9FindLaw. Tennessee Code Title 10 – 10-7-503