Alamo

ADU Pass helps homeowners in Alamo, Lincoln County, Nevada navigate the permit paperwork for building an accessory dwelling unit. This area covers 2 ZIP codes.

2 ZIP codes

ADU details

ADU legality: unclear

Stateunclear (Nevada accessory-dwelling framework) — Nevada statewide ADU posture per state-adu-research file.
Countywith-restrictions (Lincoln County unincorporated zoning) — Lincoln County permits ADUs in unincorporated areas under state-law-aligned standards. Within Alamo city limits the city ordinance plus state law govern.
Citywith-restrictions (City of Alamo Municipal / Zoning Code — Accessory Dwelling Units) — City of Alamo permits ADUs under the local ordinance aligned with Nevada statewide framework where applicable.

Nevada leaves ADU regulation to local municipalities under home-rule or Dillon-rule authority. Alamo permits ADUs subject to local conditions per its zoning ordinance.

Cost scenarios

ScenarioSq ft PermitBuildTotal
minimum 150 $2,200 $44,700 $46,900
600 600 $2,200 $178,800 $181,000
midpoint 525 $2,200 $156,450 $158,650
maximum 900 $2,200 $268,200 $270,400
Fee breakdown
Plan review$660
Building permit$1,210
Impact fees$330
Total$2,200

Viability (permitted uses)

  • Long-term rental: yes Long-term rental of ADU generally permitted; landlord-tenant law and any city rental-registration ordinance apply.
  • Short-term rental: with-restrictions STR rules vary by city. Alamo regulates STRs separately from ADU permitting; check local STR ordinance and HOA covenants.
  • Office rental: with-restrictions Detached office rental requires home occupation permit or rezoning.
  • Home office: yes Home occupation permitted with restrictions on signage and customer traffic.
  • Studio / workshop: yes Personal artist studio is a permitted accessory use.
  • Agriculture: with-restrictions Limited urban agriculture permitted in residential zones; livestock varies by district.
  • Relative support: yes Family-occupancy ADU explicitly permitted in single-family zones.

Utilities

  • Water: Alamo Water Utility · 30d connect · $4,500
  • Sewer: Alamo Sewer / Wastewater · 30d connect · $5,500
  • Electric: Alamo Electric Utility · 21d connect · $1,800
  • Gas: Alamo Gas Utility · 30d connect · $1,500

Property values & taxes

Median value$220,000
Median tax$1,430/yr
Effective rate0.7%

Construction timeline

Detached build24 weeks
Conversion14 weeks
Contractor lead3 months

Realistic total: best 7mo · typical 10mo · worst 16mo

Financing

Insurance impact

Annual premium delta$380
Landlord policyrecommended
Umbrella threshold$1M umbrella when renting

HOA prevalence & preemption

State HOA preemptionno

Nevada has no HOA-ADU preemption; HOA covenants restricting ADUs are enforceable.

Regulatory overlays (1)

  • flood-zone
    Alamo has FEMA Special Flood Hazard Areas; elevation certificates and flood-resistant construction required for SFHA parcels.
Technical envelope (climate & building code)

Climate & energy code

IECC climate zone3B
Heating degree days3,100
Cooling degree days1,900
Design low / high24°F / 99°F
Frost depth12"
Design snow load15 psf
Wind design speed105 mph
Seismic design cat.C
Annual rainfall7"
Wildfire exposurelow
Energy codeIECC
Version / adopted2018 / 2021

Building code

Base codeIRC
Version year2,018
Adopted2021
Fire sprinklernone
Egress window5.7 sqft min
Min ceiling7 ft
Attic R-valueR-38 min
Wall R-valueR-13 min

Amendments:

  • Amendment
  • Amendment
Lincoln County — county ADU rules and overlays

County ADU ordinance

Lincoln County does not maintain a standalone ADU ordinance. ADUs (commonly handled as accessory or secondary dwellings) fall under the county zoning code's general provisions for residential zones (Title 12) and are typically permitted as conditional uses in residential and rural districts on parcels meeting minimum acreage and septic standards. Nevada is a permissive state for ADUs at the local level (no state ADU preemption like CA SB 9), so county discretion governs.

County regulatory overlays

  • wui-fire-zone — Nevada has not adopted a statewide WUI building code mandate; local enforcement varies. Lincoln County applies International Wildland-Urban Interface Code provisions on a discretionary basis.
  • flood-zone — Refer to FEMA Flood Insurance Rate Maps (FIRMs) for Lincoln County (Community ID 320014). ADUs in SFHAs must meet base flood elevation standards.
  • other — BLM Ely District is the primary federal land manager. ADU additions on private inholdings near federal land may face additional NEPA-style review when federal access easements are involved.
Nevada state — ADU law and programs

State financing programs

Nevada Housing Division (NHD), under the Department of Business and Industry, does not operate an ADU-specific loan or grant product as of 2026-04-26. NHD's primary homeowner-facing program is Home Is Possible, providing first-time and qualifying homebuyers in Clark and Washoe counties up to 4% of the loan amount as a non-repayable grant for down payment and closing costs, paired with a 30-year fixed-rate first mortgage. The Home Is Possible For Heroes overlay serves teachers, military, first responders, and healthcare workers. NHD also issued $283.3 million of 2024 tax-exempt bonding authority for affordable-housing development (multi-family); separately, the Nevada Affordable Housing Assistance Corporation (NAHAC) administers federal Hardest Hit Fund and Homeowner Assistance Fund programs for delinquency relief. None of these is ADU-specific; ADU construction can be financed only as part of a qualifying primary-residence purchase or refinance.

Federal (United States) — ADU-relevant rules and programs

Federal ADU law

The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.

Federal financing programs

Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.

Federal tax credits

There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.

Federal housing programs

HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.

ZIP Codes

  • 89001
  • 89017

Post Office

  • 40 N Purple Sage Ave, 89001