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Accessory Dwelling Unit (ADU) Permit in Mesquite, Nevada

Required for construction of a new accessory dwelling unit (ADU) in Mesquite. Mesquite has its own ADU program in the Unified Development Ordinance (Mesquite Municipal Code Title 9, §9-7Y-4 Accessory Dwelling Units, adopted by Ord. B24-004 eff. 8/15/2024). An ADU is a habitable secondary dwelling unit added to, created within, or detached from a single-family dwelling on the same lot, including its own kitchen/cooking facilities, subordinate to the primary dwelling. Key local standards: maximum 1,000 sq ft of habitable area OR 60% of the primary unit's habitable area (whichever is less); only one ADU per parcel; an owner-occupancy affidavit is required (either the primary or the ADU must be owner-occupied); and one additional off-street parking space is required. Mesquite (population under 60,000) is NOT subject to the NRS 278.257 statewide ADU mandate, so these local rules — including the owner-occupancy requirement — govern. A 'casita' (a room/suite without separate cooking facilities) is regulated as an accessory building under §9-7Y-2.J, not as an ADU. ADUs use the Residential/Dwelling Building permit type.

Verified 2026-06-30 · Source

When you need this permit

  • Mesquite allows an ADU under MMC Title 9 §9-7Y-4 (Unified Development Ordinance, Ord. B24-004 eff. 8/15/2024); the ADU must be a permanent structure
  • Maximum one ADU per parcel (§9-7Y-4.3)
  • Floor area: maximum 1,000 sq ft of habitable area, or 60% of the primary unit's habitable area, whichever is less (§9-7Y-4.6)
  • An owner-occupancy affidavit must be recorded — either the primary or the accessory dwelling unit must be owner-occupied (§9-7Y-4.4); NRS 278.257 does not apply to Mesquite (pop. <60,000), so this requirement is not superseded Owner-builder
  • Setbacks, development standards, and off-street parking follow the applicable zoning district; building separation 10 ft (3 ft from property lines if a public utility easement is released) (§9-7Y-4.7–9)
  • Maximum height 35 ft (14 ft within 6 ft of a property line), not to exceed the primary structure's height; an ADU may be placed on the upper floors of an existing residence (§9-7Y-4.10)
  • One additional off-street parking space beyond that required for the principal dwelling (§9-7Y-4.12)
  • Water and sewer served by the existing primary residence connection/meter — the meter may not be upsized to serve the ADU (§9-7Y-4.13)
  • Design/materials must match the principal dwelling (siding, roofing, colors, window style) and maintain the single-family character of the lot/neighborhood (§9-7Y-4.11, .18)
  • ADU may not be sold separately from the property or converted to condominium ownership; ADUs are prohibited in manufactured housing, mobile home, and non-residential zones (§9-7Y-4.15, .17)
  • A tiny home used as an ADU must be on a permanent foundation, receive a certificate of occupancy, and be classified as an ADU on the building permit (§9-7Y-4.2)
  • Comply with 2024 IRC and 2024 IECC
  • Soils report and pad certification required (same as new construction)
  • Submittal Fee ($75 BSF) applies

Required documents

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Fee schedule

Building Permit Fee — valuation-based per Table 3-AMesquite City Code §7-1-3, Table 3-A
Same valuation table as new residential construction; see Residential Building Permit type for full table
Residential/Dwelling Building Submittal Fee (BSF)Mesquite City Code §7-1-3, Item 8
$75.00 (non-offset)
Plan Review FeeMesquite City Code §7-1-3, Item 9
65% of building permit fee
Administrative FeeMesquite City Code §7-1-3, Item 10
10% of building permit fee

Review timeline

Plan reviewTypical estimate — confirm current times with the Mesquite building department
~5–30 business days

How long did your Accessory Dwelling Unit (ADU) Permit permit actually take in Mesquite?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Foundation

    Footings and foundation before concrete pour

  2. 2

    Framing / Rough-In

    Structural framing and all trade rough-ins before insulation or wall cover

  3. 3

    Final

    All work complete, smoke/CO detectors, address posted, ready for occupancy

See the full Mesquite inspection guide — scheduling & re-inspection fees →

Tips

  • Mesquite adopted a dedicated ADU program in 2024 (MMC §9-7Y-4): an ADU is capped at the lesser of 1,000 sq ft of habitable area or 60% of the primary dwelling's habitable area, and only one ADU is allowed per parcel.
  • Unlike the larger Nevada cities, Mesquite (pop. <60,000) is NOT covered by the NRS 278.257 mandate, so Mesquite's owner-occupancy affidavit requirement (either the primary or the ADU must be owner-occupied) remains in force. Owner-builder
  • A structure without its own kitchen is a 'casita' (regulated as an accessory building under §9-7Y-2.J), not an ADU — adding cooking facilities makes it an ADU subject to §9-7Y-4.
  • Water and sewer must run off the existing primary residence's connection and meter; the meter cannot be upsized for the ADU.
  • Trade permits (electrical, plumbing, mechanical) are required separately.
  • Confirm ADU zoning eligibility with the Mesquite Planning and Zoning Division at (702) 346-2835 before applying.

Frequently asked questions

Mesquite requires an accessory dwelling unit (adu) permit for: Mesquite allows an ADU under MMC Title 9 §9-7Y-4 (Unified Development Ordinance, Ord. B24-004 eff. 8/15/2024); the ADU must be a permanent structure; Maximum one ADU per parcel (§9-7Y-4.3); Floor area: maximum 1,000 sq ft of habitable area, or 60% of the primary unit's habitable area, whichever is less (§9-7Y-4.6); An owner-occupancy affidavit must be recorded — either the primary or the accessory dwelling unit must be owner-occupied (§9-7Y-4.4); NRS 278.257 does not apply to Mesquite (pop. <60,000), so this requirement is not superseded; Setbacks, development standards, and off-street parking follow the applicable zoning district; building separation 10 ft (3 ft from property lines if a public utility easement is released) (§9-7Y-4.7–9); Maximum height 35 ft (14 ft within 6 ft of a property line), not to exceed the primary structure's height; an ADU may be placed on the upper floors of an existing residence (§9-7Y-4.10); One additional off-street parking space beyond that required for the principal dwelling (§9-7Y-4.12); Water and sewer served by the existing primary residence connection/meter — the meter may not be upsized to serve the ADU (§9-7Y-4.13); Design/materials must match the principal dwelling (siding, roofing, colors, window style) and maintain the single-family character of the lot/neighborhood (§9-7Y-4.11, .18); ADU may not be sold separately from the property or converted to condominium ownership; ADUs are prohibited in manufactured housing, mobile home, and non-residential zones (§9-7Y-4.15, .17); A tiny home used as an ADU must be on a permanent foundation, receive a certificate of occupancy, and be classified as an ADU on the building permit (§9-7Y-4.2); Comply with 2024 IRC and 2024 IECC; Soils report and pad certification required (same as new construction); Submittal Fee ($75 BSF) applies. If your project isn't listed, confirm with City of Mesquite Building Division (Development Services) at (702) 346-2835 before starting work.

In Mesquite, the published Building Permit Fee — valuation-based per Table 3-A is: Same valuation table as new residential construction; see Residential Building Permit type for full table. Additional published fees: Residential/Dwelling Building Submittal Fee (BSF) — $75.00 (non-offset); Plan Review Fee — 65% of building permit fee; Administrative Fee — 10% of building permit fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Plan review for an accessory dwelling unit (adu) permit in Mesquite typically runs 5–30 business days. This is an estimate, not a published figure — confirm current review times with City of Mesquite Building Division (Development Services) at (702) 346-2835.

You'll need: Residential Dwelling Permit Application; Construction Drawings; Soils Report. See the required-documents checklist on this page for details on each.

Mesquite requires 3 inspection(s) for an accessory dwelling unit (adu) permit, in order: Foundation, Framing / Rough-In, Final. Schedule each through City of Mesquite Building Division (Development Services) ((702) 346-2835).

Apply through City of Mesquite Building Division (Development Services) at 10 E. Mesquite Blvd., Mesquite, NV 89027. Phone: (702) 346-2835, email: buildingpermits@mesquitenv.gov. Office hours: Mon–Thu 7:30 AM – 5:00 PM (Fri–Sun closed). Official information: https://www.mesquitenv.gov/resources/building-divison.

Mesquite, Nevada has adopted: 2024 International Building Code (IBC) — with Southern Nevada and City of Mesquite amendments; adopted Ord. B25-013, eff. Aug. 12, 2025; 2024 International Residential Code (IRC) — with Southern Nevada and City of Mesquite amendments; adopted Ord. B25-012, eff. Aug. 12, 2025; 2024 International Energy Conservation Code (IECC) — adopted with City of Mesquite amendments, eff. Aug. 12, 2025; 2024 Uniform Mechanical Code (UMC) — published by IAPMO; adopted with City of Mesquite amendments, eff. Aug. 12, 2025; 2024 Uniform Plumbing Code (UPC) — published by IAPMO; adopted with City of Mesquite amendments, eff. Aug. 12, 2025; 2023 National Electrical Code (NEC) — adopted with City of Mesquite amendments, eff. Aug. 12, 2025; 2024 International Swimming Pool and Spa Code (ISPSC) — Southern Nevada amendments with City of Mesquite amendments; adopted Ord. B25-009, eff. Aug. 12, 2025; 2024 International Existing Building Code (IEBC) — Southern Nevada amendments; adopted Ord. B25-011, eff. Aug. 12, 2025; 1997 Uniform Administrative Code (UAC) — with City of Mesquite amendments governing permit issuance and fee collection; fee schedule last amended Ord. B23-009, Jul. 11, 2023. Local amendments apply — see the Mesquite overview page for the full list.

Yes. Mesquite's Unified Development Ordinance (MMC Title 9, §9-7Y-4, adopted 2024) expressly allows accessory dwelling units. An ADU is capped at the lesser of 1,000 sq ft of habitable area or 60% of the primary dwelling's habitable area, only one is allowed per parcel, a recorded owner-occupancy affidavit is required (the primary or the ADU must be owner-occupied), and one additional off-street parking space is required. Because Mesquite's population is under 60,000, the NRS 278.257 statewide ADU mandate does not apply, so these local rules govern. Confirm zoning eligibility with the Mesquite Planning and Zoning Division at (702) 346-2835.

Sources & verification

Verified against official sources. Last reviewed 2026-06-30.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Mesquite building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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Accessory Dwelling Unit (ADU) Permit in other cities

Carson City, NevadaDouglas County, NevadaHenderson, NevadaLas Vegas, NevadaNorth Las Vegas, NevadaReno, NevadaSparks, NevadaUnincorporated Clark County, Nevada

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