Complete 2026 cost breakdown: construction, permits, financing, and expected rental ROI.
Calculate your North Las Vegas ADU cost →Building an ADU in North Las Vegas costs between $100,000-$220,000 for new construction, with per-square-foot costs averaging $180-$330. These figures include design, permitting, site preparation, and construction. The most affordable option is a garage conversion at $50,000-$120,000, while prefab/modular ADUs fall in between at $80,000-$180,000.
| Cost Category | Estimated Range |
|---|---|
| Architectural Plans | $3,000 – $15,000 |
| Permits & Fees | Special Use Permit $1,000 ($500 + $500 notification; Land Development Application Manual). Building permit by valuation, Table 3-A: $620 for the first $100,000 + $3.30 per $1,000, plus 65% plan check, 10% zoning review, $75 admin and 3% recording (§15.72.230) — about $1,470 on a $150,000 unit. |
| Impact Fees | Park impact fee $0.36 per sq ft of residential construction and a Clark County Transportation Tax of $1,000 per residential unit (Permit Application Center fee page; whether the tax is assessed on an ADU is not stated — ask at intake). Sewer main connection fee: "Guest home (casita)" 1.00 ERU, $1,730 per dwelling unit in the city's Water Reclamation Facility service area; in the Clark County Water Reclamation District area the District's connection fee applies plus a $500 city administrative fee (§13.24.070.A). Wastewater main construction (frontage) fees can apply where no main serves the lot (§13.24.070.B). |
| Site Prep & Foundation | $10,000 – $35,000 |
| Framing & Structure | $15,000 – $45,000 |
| Plumbing | $8,000 – $20,000 |
| Electrical | $5,000 – $15,000 |
| HVAC | $3,000 – $8,000 |
| Interior Finishes | $15,000 – $40,000 |
Quotes for the same ADU commonly vary 20–40% between builders. We pass your request to up to 5 local builders serving North Las Vegas, where we have them — free, no obligation.
Get North Las Vegas builder quotes →Permit fees in North Las Vegas are Special Use Permit $1,000 ($500 + $500 notification; Land Development Application Manual). Building permit by valuation, Table 3-A: $620 for the first $100,000 + $3.30 per $1,000, plus 65% plan check, 10% zoning review, $75 admin and 3% recording (§15.72.230) — about $1,470 on a $150,000 unit.. The review timeline is Not published. The Special Use Permit adds a Planning Commission hearing cycle (decision due within 30 days of the first hearing, final on day eight unless appealed, §17.12.070.J) before building plan review starts — ask Planning and Zoning at (702) 633-1537 for current turnaround., with plan check: Plan review through the Development Services Center (single point of entry, concurrent reviews). Fee: 65% of the building permit fee for building plan check plus 10% for zoning review, paid at submittal; revisions $80/hr; re-inspection $100; same-day inspection $100 (§15.72.230.B; Permit Application Center). Valuation is set by the Building Official from Table 3-E or the contract price (§15.72.170.B). Mobile homes, RVs and travel trailers may not serve as ADUs (§17.20.030.F.2.c.iii); an accessory structure may not sit in a utility easement or go up before the house (§17.20.030.B.1.l–m).. Impact fees are Park impact fee $0.36 per sq ft of residential construction and a Clark County Transportation Tax of $1,000 per residential unit (Permit Application Center fee page; whether the tax is assessed on an ADU is not stated — ask at intake). Sewer main connection fee: "Guest home (casita)" 1.00 ERU, $1,730 per dwelling unit in the city's Water Reclamation Facility service area; in the Clark County Water Reclamation District area the District's connection fee applies plus a $500 city administrative fee (§13.24.070.A). Wastewater main construction (frontage) fees can apply where no main serves the lot (§13.24.070.B).. Pre-approved plans: None. The Permit Application Center's forms and submittal guides (Single-Family Residential, Residential Plot Plan and the rest) include no pre-approved or stock ADU plan set..
| 1-Bedroom Rent | $1,300-$1,750/month |
| 2-Bedroom Rent | $1,550-$2,050/month |
| Annual Rental Income (est.) | $18,300/year |
| Payback Period (est.) | 8.7 years |
| Short-Term Rental | Only with a Conditional Use Permit ($100 application fee) under Ordinance 3127 (June 2022), approved before the business licence: 660-ft separation from other existing or proposed short-term rentals, 2,500 ft from resort. |
| Overall ROI Estimate | 5-7% annual return on cost |
A typical ADU in North Las Vegas generates approximately $18,300 per year in rental income based on average 1-bedroom rents. At an average construction cost of $160,000, the estimated payback period is 8.7 years — before accounting for the resale value the ADU adds, which an appraiser determines from comparable sales in North Las Vegas and varies by market (often less than build cost).
1. Garage conversions save 40-60% vs new construction since the shell already exists. Average cost in North Las Vegas: $50,000-$120,000.
2. Prefab/modular ADUs offer predictable pricing and faster timelines. Average: $80,000-$180,000.
3. Pre-approved plans — available in North Las Vegas, which can save $3,000-$10,000 in design costs and 2-3 months in review time. See which cities offer pre-approved ADU plans.
4. State grants — California's CalHFA ADU grant (up to $40K) is currently paused; check calhfa.ca.gov/adu for status and your state for active programs.
5. Get multiple bids — ADU contractor pricing varies 20-40% for the same project. We recommend getting at least 3 quotes.
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