Inside Evanston city limits in Uinta County, Wyoming, the city sets its own zoning under Chapter 24 of its code1. The city's Public Works department oversees building permits and inspection2. We could not confirm who issues septic permits inside the city, so ask Uinta County Planning & Zoning before you plan a system3.
At a glance
- Zoning
- City zoning under Chapter 24 of the Evanston code; rules vary by district1
- Building permits
- Public Works oversees building permits and inspection2
- Lot size (LR-E)
- 6,000 square feet minimum, under one-half acre4
- Lot size (RR-1 / RR-5)
- 1 acre minimum up to 5 acres; 5 acres minimum up to 10 acres5
- Septic
- Not confirmed inside city limits; Uinta County runs the small wastewater program6
- Wells
- State groundwater permit required before drilling7
- Property tax (county)
- Effective rate about 0.5%8
Who to call
Building permits
City of Evanston Public Works (building permits and inspection)
Building permits and inspection inside Evanston city limits
Building permits
Main Public Works line; ask for building permits and inspection
Septic permits
Uinta County Planning & Zoning (Wastewater / Septic System)
Small wastewater system permits and inspections run by Uinta County
225 9th Street, Evanston, WY 82930-3415
Contact details are copied from each office’s official page and were checked against it on October 15, 2026.
Off-grid gear
Going off-grid in Evanston means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Does Evanston have zoning, and what does it mean for lot size?
Evanston adopts its own zoning: Chapter 24 of the city code is the zoning chapter, and specific uses and dimensional rules vary by district1. Land inside Evanston city limits follows that code, not the county's land use resolution.
In the low-density residential LR-E and LR-M districts, single-unit lots range from 6,000 square feet minimum to less than one-half acre4. In the RR-1 rural-residential district, lots run from 1 acre minimum to less than 5 acres, and in RR-5 from 5 acres minimum to less than 10 acres5. Check the zoning district of your exact parcel before you buy.
We could not confirm Evanston's setbacks, height limits, minimum dwelling size, or rules for RVs and tiny homes. Ask the city before you rely on any of them.
Do you need a building permit in Evanston, and who issues it?
Evanston's Public Works department lists overseeing building permits and inspection among its responsibilities2. Call Public Works at (307)783-6452 to ask which permit your project needs9.
We could not confirm Evanston's building code edition, its permit fees, or whether owner-builders get any exemption inside the city. Those answers sit in the city's own code and with Public Works.
How do septic permits work in Evanston?
We could not confirm who issues septic permits for a lot inside Evanston city limits. Uinta County Planning & Zoning runs the county's small wastewater program: no small wastewater system may be built, installed or modified without a permit from Uinta County, and the application fee is $150103.
Many city lots connect to city sewer, but we could not confirm Evanston's connection rules. Before you buy a lot you expect to put a septic system on, ask Public Works whether sewer is available and ask Uinta County Planning & Zoning at 307-783-0360 whether the county permit applies3.
How do wells and water work inside Evanston?
Wyoming requires a permit before you drill a domestic or stock well: the U.W. 5 application goes to the State Engineer's Ground Water Division, with a $50 filing fee7. We could not confirm any additional city rule on private wells inside Evanston, so ask Public Works about city water service for your lot.
What stays with Uinta County, and what should you check before you buy in Evanston?
Evanston's rules stop at the city limits. Unincorporated Uinta County follows the county's own land use resolution, and that resolution leaves intact the zoning authority of Evanston where the city has extended it beyond its limits11. For land outside the city, see the Uinta County page.
Before buying inside Evanston, confirm the parcel's zoning district with the city, ask Public Works about building permits and sewer availability, and ask Uinta County Planning & Zoning about septic. Uinta County's effective property tax rate is about 0.5% and the median bill is $1,389 a year812.
Watch-outs
Sources
- Chapter 24: Zoning - City of Evanston, WY (Evanston), quoted and re-checked
- City of Evanston Public Works (building permits and inspection) (evanstonwy.org)
- Uinta County Planning & Zoning (Wastewater / Septic System) (uintacountywy.gov)
- ecode360.com (Evanston), quoted and re-checked
- ecode360.com (Evanston), quoted and re-checked
- Wastewater / Septic System, quoted and re-checked
- seo.wyo.gov, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- City of Evanston Public Works (evanstonwy.org)
- Wastewater / Septic System, quoted and re-checked
- Uinta County Land Use Plan 2023 / Resolution 23-02, quoted and re-checked
- Median property tax bill: Bolthole Index county data
Written October 15, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.