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Reno, NV Accessory Structures: ADU Rules (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

ADU rules in Reno, NV, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.

Key Facts

Max detached ADUs per lot: one, per Table 3-5
ADU must have: kitchen, full bath, sleeping area
Parking required: 1 space per ADU
Governing code: RMC Title 18, Ch. 18.03

ADU Eligibility Quick-Check

An Accessory Dwelling Unit (ADU) is a smaller, independent living unit on the same lot as a single-family home: converted garages, detached cottages, basement or attic conversions, and attached additions all qualify. Most states have streamlined ADU permitting since 2020, but local rules still control size, height, and setback.

Is your lot zoned single-family or multi-family residential?
Does your lot have at least 1,200 sq ft of buildable space?
Is your existing home owner-occupied (in most states this is not required, but some require it for ADU permits)?
Will the ADU stay under your state's size cap (commonly 850-1,200 sq ft for detached)?
Can you provide one off-street parking space (waived in many states within 0.5 mi of transit)?

If you answered 'yes' to most of these, you likely qualify in Nevada under recent ADU streamlining laws. The Reno, NV rules below cover local size, height, and setback requirements.

Summary

Reno's zoning code caps most residential lots at one detached accessory dwelling unit on top of the lot's normal limit on other accessory structures, and requires one off-street parking space per ADU.

Table 3-5 Detached Accessory Structures Permitted. District(s) — Detached Accessory Structures per Residential Lot, Maximum. SF-5 / SF-8 / SF-11 / MF-14 — 2, plus 1 detached accessory dwelling unit or guest quarters.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Administrative Code: Supplement 64 | Land Development Code: Supplement 5 Update 1).

Full Breakdown

The Reno Municipal Code defines an accessory dwelling unit as a dwelling unit with its own kitchen, full bathroom, and living and sleeping areas that is incidental to the principal home on the same lot. Table 3-5 sets the maximum number of detached accessory structures allowed per residential lot by zoning district, and in every listed district, LLR, SF-3, SF-5/SF-8/SF-11/MF-14, MF-21/MF-30, and UT, that allowance includes one detached ADU or guest quarters, but not both on the same lot. Off-street parking is required at one additional space per ADU under Table 4-6 of the parking chapter, separate from parking for the principal dwelling.

Violations & Fines

Exceeding a lot's accessory-structure limit, building an ADU without the required permit, or skipping its required parking space is a zoning code violation the City's Community Development Department can order corrected or removed.

Frequently Asked Questions

How many accessory dwelling units can I build on a Reno lot?

Table 3-5 of the Reno Municipal Code allows one detached accessory dwelling unit, or guest quarters but not both, per residential lot, on top of the district's normal limit on other detached accessory structures.

Does a Reno ADU count toward my parking requirement?

No, it adds to it. Table 4-6 requires one additional off-street parking space for each accessory dwelling unit, separate from parking for the main house.

Sources & Official References

[1]Reno Municipal Code (Municode)

Other rules in Reno

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All Reno rules

How Reno compares: Easiest Cities to Build an ADU·Compare Reno to another location·View the Nevada accessory structures overview

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