Unincorporated Laramie County, Wyoming requires a building permit for a home, issued by Laramie County Planning & Development12. The county enforces its amended International Codes for residential work and has zoning under its Land Use Regulations34. Septic systems under 2,000 gallons a day go through the county's Environmental Health Division5.
At a glance
- Building permit
- Required in unincorporated Laramie County2
- Zoning
- Yes — 2025 Land Use Regulations with LU, RRC, RRH and RRL districts4
- Septic permit
- Laramie County Environmental Health, for systems under 2,000 gallons/day5
- Owner-builder
- Allowed on your own primary residence; permits and inspections still required6
- Well permit
- State permit (U.W. 5 form) required before drilling; $50 filing fee7
- Subdivision / driveway easement
- Parcels 35+ acres are generally exempt from the subdivision-permit process but need a recorded 40-ft easement to a public road8
- Floodplain permit
- Required for building in a FEMA-mapped flood hazard area9
Who to call
Building permits
Laramie County Planning & Development
Building/IRC permits, inspections, code enforcement and zoning administration for unincorporated Laramie County
3966 Archer Pkwy Cheyenne, WY 82009
Septic permits
Environmental Health (Cheyenne-Laramie County Public Health)
Small wastewater (septic) system permits and inspections for Laramie County
Floodplain permits
Laramie County Planning & Development (Floodplain Information)
Floodplain maps, flood-hazard information and floodplain development questions for unincorporated Laramie County
3966 Archer Pkwy Cheyenne, WY 82009
Roads & driveways
Driveway/access permits onto county roads in unincorporated Laramie County
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in Laramie County, Wyoming?
Yes. Laramie County Planning & Development requires a building permit before construction begins in unincorporated Laramie County, and inspections are required as the work proceeds2. Laramie County's amended 2024 International Codes took effect January 1, 2025 and cover building, residential, fire, plumbing, mechanical, fuel-gas and existing-building work administered by the county3. The county has deferred application and inspection enforcement of commercial building permits to the Wyoming Department of Fire Prevention and Electrical Safety, but residential-code enforcement stays with the county1. County information indicates that an owner may perform work on a primary residence if the work meets the adopted code, but the reviewed building guidance does not independently spell out a contractor-licensing exemption; confirm eligibility with Planning & Development before choosing the owner-builder route61.
Who is the Laramie County building department, and how do you reach them?
Laramie County Planning & Development is the building department for unincorporated Laramie County, at 3966 Archer Pkwy, Cheyenne, WY 820091. Call (307) 633-4303 for permitting questions, (307) 633-4615 to schedule an inspection, or email [email protected] for building-permit information1. Residential applicants must apply through the county's online portal and provide the required materials, including a plot plan, foundation details, building plans, applicable ownership evidence and fees; an incomplete or unpaid application will not enter processing10. The county states that plan review takes 10 business days after complete payment10. The former Citizen Access Portal is offline, but legacy records remain available at the office kiosk and staff can make parcel information available in the SmartGov public portal after an email request1.
Does Laramie County have zoning?
Yes. Laramie County adopted the 2025 Laramie County Land Use Regulations along with an Unincorporated Zone District Map that sorts county land into districts, including several rural-residential categories labeled LU, RRC, RRH and RRL4. Wyoming law gives every county board of commissioners general authority to regulate the location and use of buildings and the use of land in unincorporated areas for residential, agricultural and other purposes11. That authority can't be used to block agricultural use or mineral extraction, and a county can't require land to match a comprehensive plan unless that plan has actually been written into the zoning regulations11. This guide's sources don't spell out which zone district applies to a specific parcel or what each district allows for an RV, a tiny home or a minimum home size, so call Laramie County Planning & Development with the parcel number before you assume anything about use or setbacks1.
How do septic permits work in Laramie County?
Septic and other small wastewater systems in Laramie County are permitted through the county's own Environmental Health division, not a state office, for any system that treats less than 2,000 gallons of domestic wastewater a day5. Wyoming DEQ's small-wastewater program permits directly only in Campbell County (commercial systems), and Carbon, Niobrara, Platte and Weston Counties; every other Wyoming jurisdiction, Laramie County included, runs its own permitting under that same general framework12. All small wastewater systems, whether residential or commercial, must be permitted before installation, repair or modification13. A system generating 2,000 gallons a day or more instead goes to Wyoming DEQ's Water Quality Division14. Soils matter here: USDA's soil survey rates about half of Laramie County's soil, 49.7%, as not severely limited for a conventional drain field, so plan on a site evaluation and be ready for an engineered system on the other half15.
Can you live in an RV or tiny home on your land in Laramie County?
This guide's research did not turn up a Laramie County rule that answers RV or tiny-home occupancy directly, so don't assume either is allowed or banned on a given parcel. The county's 2025 Land Use Regulations sort unincorporated land into zone districts, and rules on RVs and tiny homes typically live inside those district standards rather than in a separate ordinance4. Call Laramie County Planning & Development with your parcel number before you buy if living in an RV or a tiny home while you build matters to you1. Statewide rules about licensed campgrounds and RV parks are a different thing entirely and don't answer whether you can park and live in an RV on your own land.
Building a home in Laramie County: the steps, in order
- Confirm your parcel's zone district and any setback or use rules with Laramie County Planning & Development before you design anything14.
- If you'll drill a well, file Wyoming's U.W. 5 "Application for Permit to Appropriate Ground Water" and get it approved before drilling; the filing fee is $50, and a licensed Wyoming water-well contractor has to do the work7.
- If you need an onsite septic system, apply for a permit through Laramie County Environmental Health before you install, repair or modify it135.
- If your lot sits near one of the county's mapped flood-hazard watersheds, check with Planning & Development for floodplain status and any floodplain development permit before you build169.
- If you're building a new driveway or altering an existing one onto a county road, get an access permit from Laramie County Public Works first17.
- Apply online for your Laramie County residential building permit with the plot plan, foundation details, building plans, applicable ownership evidence and fees; processing does not begin until the application is complete and paid10.
- Allow 10 business days for plan review after complete payment, then schedule required inspections as work proceeds by calling (307) 633-4615101.
What to check before you buy land in Laramie County
Water: a well permit takes state approval before drilling, and Laramie County has been in severe drought roughly 14.8% of years on record, so ask about well depth and yield before you count on one718. Soils: about half the county's soil, 49.7%, isn't severely limited for a conventional septic drain field, which means roughly half is, so get a site evaluation before you assume a standard system will work15. Terrain: 82.9% of Laramie County land sits at 15% slope or less, which is favorable for building and driveways on most parcels19. Flood: check whether your parcel is near one of the county's mapped watersheds and pull the FEMA flood map for the parcel before you close16. Access: parcels of 35 acres or more are generally exempt from Wyoming's subdivision-permit process but still need a recorded 40-foot ingress/egress and utility easement to a public road, and any new driveway onto a county road needs its own access permit from Public Works817. Taxes: Laramie County's effective property tax rate runs about 0.6%, with a median bill around $1,893 a year, against a typical home value of $393,457 and farmland running about $2,003 an acre20212223.
Watch-outs
- Laramie County has deferred application and inspection enforcement of commercial building permits to the Wyoming Department of Fire Prevention and Electrical Safety, while enforcement of the International Residential Code for homes stays with the county1.
- Laramie County's Citizen Access Portal for building permit and development records is offline due to security concerns; use the walk-in kiosk at the Planning & Development office or email your parcel number and expect a SmartGov portal update within two business days1.
- This guide could not confirm a Laramie County rule on RV or tiny-home occupancy on private land; call Planning & Development with your parcel number before you rely on one1.
Sources
- Laramie County Planning & Development (laramiecountywy.gov)
- Laramie County - Planning & Development (2026 county census)
- Building Code - Laramie County, Wyoming, quoted and re-checked
- Laramie County - Land Use Regulations (2026 county census)
- Wyoming DEQ - Small Wastewater Systems (2026 county census)
- Laramie County - Planning & Development (2026 county census)
- General Processes (Wyoming statewide rule), quoted and re-checked
- Wyoming Statutes, Title 18 (Wyoming statewide rule), quoted and re-checked
- 2027-2028 Biennium Unit Narrative, Wyoming Office of Homeland Security (Wyoming statewide rule), quoted and re-checked
- Guidance for Residential Projects, quoted and re-checked
- Wyoming Statutes, Title 18, W.S. 18-5-201 (Wyoming statewide rule), quoted and re-checked
- Small Wastewater Systems (Wyoming statewide rule), quoted and re-checked
- Environmental Health (Cheyenne-Laramie County Public Health) (clcpublichealth.org)
- Small Wastewater Systems (Wyoming statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Laramie County Planning & Development (Floodplain Information) (laramiecountywy.gov)
- Laramie County Public Works (laramiecountywy.gov)
- Share of years in severe drought: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Typical home value (Zillow): Bolthole Index county data
- Farmland value per acre (USDA census): Bolthole Index county data
Written September 29, 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.