Building permits, zoning and land rules in Lyon County, Nevada

Unincorporated Lyon County requires permits for most new construction, repairs and remodeling on residential lots¹. Fences may be exempt subject to height limits, and a detached accessory structure under 200 square feet may be exempt only when it has no electrical or plumbing work¹. Plan submittals must comply with the building codes effective in 2026, including the 2024 ICC code family and the 2023 electrical code⁹. An owner may apply as an owner-builder for a home intended for personal occupancy, but must submit the affidavit, directly supervise construction and use licensed subcontractors⁵.

The Lyon County Community Development Department's Building Division handles building permits and inspections; call (775) 463-6591 or email building@lyon-county.org⁹. The public counter closes at 4:00 p.m. on weekdays⁹. Inspection requests must reach the Yerington office by 4:00 p.m. on the preceding working day, and Monday inspections must be requested by Friday¹⁰. Keep the approved plans, permit card and earlier inspection reports at the job site, because incomplete work can trigger an $80 recall fee¹⁰. For zoning and development review on unincorporated land, contact the Planning Division at (775) 463-6592 or planning@lyon-county.org¹¹.

Unincorporated Lyon County has zoning under Title 15, with permitted uses and development standards that vary by district; municipal rules may differ^2,11,12. Ask the Planning Division to identify the parcel’s district and allowed uses before choosing a house type or siting improvements¹¹. In RR-1, setbacks are 30 feet in front and on a side street, 20 feet at the rear and 10 feet at the side; maximum building height is 35 feet¹². RR-2 requires 2 net acres and 75 feet of street frontage; RR-5 requires 5 gross acres and 150 feet of frontage, with a 30-foot frontage exception on cul-de-sac bulbs in both districts^7,8. Cottage-housing minimum lot areas apply only to the listed suburban and mixed-use districts and depend on water and sewer availability; they are not rural residential lot standards¹³. Land division is also regulated under Title 15, and tentative subdivisions require engineered drainage and soils studies^2,14. We could not confirm general lot-coverage limits; ask Planning for the parcel’s applicable standards¹¹.

The Lyon County Building Department handles residential individual sewage disposal system (ISDS) approval; call (775) 463-6591 or email building@lyon-county.org for application instructions^3,9. Every Lyon County dwelling without community sewer must have its own ISDS, with approval before construction, alteration or extension³. A residential building application needs water and wastewater documentation, such as a utility will-serve letter, well-driller contract or septic application with perc-test data; water and sewer facilities must be on the same parcel as the home¹. Plan space for a reserve leach field as well as the initial system³. Only about 9.3% of Lyon County soils lack severe limits for a conventional drain field, making site evaluation an early feasibility step¹⁵. The ISDS must be inspected and applicable as-built plans and well logs submitted before occupancy approval³. NDEP handles large-capacity and commercial systems rather than single-family residential septic approvals¹⁶.

Motor homes, travel trailers and recreational vehicles are not permitted as residences in unincorporated Lyon County⁴. A tiny home classified as a recreational vehicle also cannot be used as a residence⁴. A tiny house of 400 square feet or less (not counting lofts) with complete independent living facilities is a different category: it is permitted in zoning districts that allow accessory dwelling units, if it is built to residential-code (IRC) standards on a foundation design stamped by a Nevada-licensed professional engineer⁶. Manufactured homes need permits before delivery, and county rules impose age, certification, size and placement conditions⁴. A manufactured home also needs a Nevada-engineered poured perimeter foundation with a crawl space or an approved equivalent¹⁷. Accessory dwellings are limited to one per parcel and to 1,100 square feet or half the primary home’s living area, whichever is less; RR-2 and RR-5 impose additional acreage and service conditions^6,7,8. We could not confirm a general temporary-camping rule; ask Planning before planning a stay on the parcel¹¹.

1. Ask Planning for the parcel's zoning district, allowed residential use and development standards¹¹.
2. Document water and wastewater service before filing; Lyon County will not accept the application until both are addressed¹.
3. Assemble complete plans and supporting approvals on county forms; incomplete applications are rejected¹.
4. Obtain septic approval if there is no community sewer, and obtain floodplain approval first if the parcel lies in a FEMA Special Flood Hazard Area^1,3.
5. Submit complete paper applications in person or upload the required documents for an online building application¹.
6. Ask Lyon County Roads or NDOT whether the driveway needs an encroachment permit¹.
7. Complete inspections; for a residential permit, the signed final inspection record serves as the certificate of occupancy^10,18.

Confirm the zoning district, allowed dwelling type and development standards with the Planning Division before treating rural acreage as buildable^2,11. Check FEMA flood mapping because construction, manufactured-home placement and fill in a Special Flood Hazard Area need approval before a building permit, with elevation certificates required during most such projects¹. Access to county roads or state highways may require a road encroachment permit; ask Lyon County Roads or NDOT whether the parcel needs one¹. Test wastewater feasibility early: only about 9.3% of Lyon County soils lack severe limits for a conventional drain field¹⁵. Lyon County averages about 8 inches of precipitation a year and has experienced severe drought in roughly 46.3% of recent years, so verify the proposed water supply¹⁵. Countywide benchmarks include a 0.5% effective property-tax rate and a $1,585 median annual tax bill¹⁵.