ADU Pass
Carson City
ADU Pass helps homeowners in Carson City, Nevada navigate the permit paperwork for building an accessory dwelling unit. We cover 1 city and 3 ZIP codes in this county.
County ADU details
County ADU ordinance
Carson City is a consolidated municipality (city + county combined) under Nevada Const. Art. 4 § 37 and the Carson City Charter (Acts 1969 Ch. 213, ratified 1969). The state capital, Carson City has ~58,000 residents and ~157 sq mi of territory between the Carson Range (Sierra Nevada eastern flank) and the Pine Nut Mountains, including the Eagle Valley plus the Carson River Canyon east toward the Lyon County line. Carson City is one of three Nevada consolidated city-counties (Carson City, the City of Henderson is NOT consolidated, and Las Vegas is not consolidated; Reno is not; only Carson City and the now-disincorporated Ormsby County / Carson Township have this status). Carson City regulates land use through the Carson City Municipal Code Title 18 (Zoning), administered by the Carson City Community Development Department. Nevada has no statewide ADU preemption — Nevada's stateAduLaw is netEffect 'no-statewide-law' — though SB 113 (2023) authorized counties of population 700,000+ (Clark and Washoe) to adopt model ADU ordinances. Carson City permits 'accessory dwelling units' in most single-family districts (RR, R-1, R-2) by right with size limits (commonly 1,000 sq ft or 50% of principal dwelling), one-per-lot limit, and parking. The Carson City Board of Supervisors updated Title 18 in 2023 to expand ADU allowances modestly.
County assessor
Assessment policy: Carson City Assessor (a county-tier function within the consolidated city-county) assesses real property under NRS Ch. 361. Nevada uses 35% of taxable value (NRS § 361.225); taxable value is roughly market value adjusted for depreciation. New ADU construction is reassessed at taxable value as of the next lien date (July 1) following completion. Nevada's tax cap (NRS § 361.4722, the 'tax cap statute') limits annual property tax growth to 3% on owner-occupied residential and 8% on other property. The cap applies to the tax bill, not the assessed value; new construction is exempt from the cap on first roll.
County overlays (3)
Known county issues (3)
- other — ADU researchers should not look for distinct county-tier ADU rules in Carson City; everything is at the city-county tier.
- other — ADU construction on Carson Range parcels should anticipate insurance-availability constraints. Add $5,000-$15,000 for ignition-resistant construction to ease underwriting.
- other — ADU rental absorption is steady but rents are moderate; investors should target long-term workforce rental rather than short-term tourism-driven rental.
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.