Sanpete County, UT zoning map, flood zone and property lines by address
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Towns in Sanpete County: Ephraim, Manti, Mount Pleasant.
Flood zone by address
ParcelSheet reads FEMA's National Flood Hazard Layer at the lot: the zone, whether it is a high risk area where lenders ask for flood insurance, and the base flood elevation where FEMA lists one. FEMA's countywide study for Sanpete County has 55 FIRM panels, the newest effective May 2012; no coastal V zones are mapped in it.
The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for a Sanpete house comes from a licensed surveyor and is often on file with the county or city building office.
Property lines
The parcel outline, parcel number and mapped size come from the Utah Geospatial Resource Center (UGRC), statewide parcels from county recorders and assessors, so a Sanpete lot shows the same lines the county assessor draws. Sanpete County covers about 1,017,483 acres of land and 7,948 acres of water.
Mapped lines are approximate. The Sanpete County assessor keeps the parcel record (Sanpete County website); a licensed surveyor sets the true corners.
Zoning
Sanpete County zones its unincorporated land, and Ephraim, Manti, Mount Pleasant each zone the land inside their limits. ParcelSheet shows the use the county assessor lists for the lot and links the county planning and zoning office for the district, the uses it allows and the lot size it needs.
ADU and guest houses
Under Utah's County Land Use, Development, and Management Act (Utah Code Title 17, Chapter 79), local governments can allow an accessory dwelling unit on a lot with a house. Whether a Sanpete lot can add one depends on its district; the county planning and zoning office has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.
Septic and soil
ParcelSheet reads the USDA soil survey at the lot: the soil's name, its septic absorption rating and whether it is prime farmland. Sanpete County is soil survey area UT627, Sanpete Valley Area, Utah, Parts of Utah and Sanpete Counties, last updated September 2026, on Web Soil Survey.
A new or changed septic system in Sanpete County needs a permit from the local health department that serves Sanpete County (under Utah DEQ onsite wastewater rules, R317-4).
Setbacks
Setbacks in Sanpete County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the county zoning office gives them for the lot's district, and Ephraim, Manti, Mount Pleasant for land inside their limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Sanpete lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Sanpete County?
Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA's countywide flood map for Sanpete County has 55 panels, the newest effective May 2012. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Sanpete County?
Open the Utah map, type the address, and the parcel outline from the Sanpete County assessor shows on the map with its parcel number and mapped size. Mapped lines are approximate; only a licensed surveyor sets the true corners.
What is my property zoned in Sanpete County?
Zoning in Sanpete County is set by the county for unincorporated land and by each city (such as Ephraim, Manti) inside its own limits. ParcelSheet shows the use code the county assessor lists and links the office that sets the zoning; the planning office has the final word.
Can I build an ADU in Sanpete County?
Under Utah's County Land Use, Development, and Management Act (Utah Code Title 17, Chapter 79), counties and cities can allow an accessory dwelling unit, and each sets its own rules. In Sanpete County ask the zoning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.
Do I need a septic permit in Sanpete County?
Yes. A new or changed septic system in Sanpete County needs a permit from the local health department that serves Sanpete County (under Utah DEQ onsite wastewater rules, R317-4). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area UT627 (Sanpete Valley Area, Utah, Parts of Utah and Sanpete Counties).
What can I build on 5 acres in Sanpete County?
Zoning in Sanpete County is set by the county for unincorporated land and each city inside its own limits (such as Ephraim, Manti). The zoning district decides the uses, how many homes and the smallest lot it allows on 5 acres. ParcelSheet shows the lot size as mapped and the use code on the parcel record; the planning office has the district and its rules. See the Sanpete County website.
What are the residential setbacks in Sanpete County (2026)?
Setbacks in Sanpete County come from the zoning code of the county, or of the city when the lot is inside city limits: the front, side and rear distances depend on the lot's district. ParcelSheet does not draw setback lines or give a number it did not read; the zoning office gives them for the district. See the Sanpete County website.
Next to Sanpete County: Emery County, Juab County, Millard County, Sevier County, Utah County.
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