Your Las Vegas ADU Built Permit-Ready, Start to Finish
We manage every Clark County submission — one contractor from site assessment to certificate of occupancy.
Here Is What a Las Vegas ADU Build Actually Involves
An ADU in Las Vegas is a fully permitted secondary dwelling unit built on your existing lot.
An accessory dwelling unit — ADU — is a self-contained residence on the same parcel as your primary home. It has its own entrance, kitchen, living space, and bathroom. In Clark County, an ADU must be permitted as a habitable dwelling unit before it can be occupied or rented. 1 Home Construction manages every step of that process under General Construction License #0090486 — from the first site visit to the certificate of occupancy.
One contractor. One permit record. No handoffs between phases.
Every Trade Under License #0090486
Structural work, flooring, tile, and paint are all performed by 1 Home Construction’s own crews — under four active Nevada licenses, on one schedule, answering to one project manager. No outside trades, no split responsibility.
How Clark County's ADU Plan Check Differs From a Standard Build Permit
Clark County applies Nevada’s ADU law through its own plan check system — and the details matter.
Nevada NRS 278.02343 is the state statute that restricts local governments from outright prohibiting ADUs in residential zones. It sets minimum approval standards Clark County must follow. But Clark County adds its own layer — specific setback tables, lot coverage calculations, and a plan check submission process that requires a complete document package before the review clock even starts.
An incomplete submittal doesn’t get reviewed and returned with notes. It gets rejected at intake — resetting the timeline before a single reviewer has looked at the project.
The Southern Nevada Water Authority — SNWA — must also be consulted when a new ADU requires a separate water service connection or adds load to an existing meter. SNWA clearance runs on its own timeline, separate from the Clark County building permit. Both need to be initiated early, and that coordination is part of what we manage on every project.
Isaac Itzhaki has been filing ADU permits in Clark County since 2004. The team knows which submission gaps trigger rejections and how to build a package that moves through plan check without returning for corrections. For a full breakdown of the permitting process, submission requirements, and correction letter cycles, see our ADU Permitting page.
From Site Assessment to Approved Plans
Every ADU build starts with a site assessment — not a design conversation.
I’ve managed ADU projects across Clark County for over 20 years. The single biggest source of project delays isn’t the construction itself — it’s the gap between what a homeowner thinks their lot can support and what the parcel record actually shows.
Before we talk design, I want to see the lot. We pull the parcel record and confirm the Clark County zoning classification. We measure existing lot coverage — the primary structure, any permitted pool, covered patio, extended driveway, and hardscape. We identify recorded easements and setbacks that define where a detached ADU can sit. For attached ADUs, we assess the existing structure’s foundation and load path.
From the assessment we move to schematic design, then to the full permit submittal package — a site plan, architectural drawings, foundation plan, energy compliance documentation, and utility connection details. We file as the licensed contractor of record under License #0090486. For how that filing status affects plan check processing, see our ADU Permitting page.
One homeowner had a clear backyard that looked like plenty of room for a detached ADU. The parcel record showed a utility easement running diagonally across the rear third of the lot, cutting the buildable area by more than 40 percent. We redesigned the footprint before a single drawing was produced. That’s why site assessment comes first — it determines what can actually be built.
Founder, 1 Home Construction LLC
We Handle Every Permit Submission as Licensed Contractor of Record
Filing as the licensed contractor of record puts the legal weight of License #0090486 behind your application.
Submitting under License #0090486 means every document is tied to a 20-year Nevada State Contractors Board compliance record. For the full breakdown of why this matters at plan check and during correction letter cycles, see our ADU Permitting page.
We track every stage so you don’t have to:
- Plan check status
- Correction letters
- Resubmittal deadlines
- Inspection scheduling at each milestone — foundation, framing, rough-in, and final
Our ADU Build Sequence in Clark County
Every phase follows a defined sequence — skipping steps doesn’t save time, it creates rework.
Site Assessment
Parcel review, zoning confirmation, lot coverage calculation, easement identification, and utility connection evaluation.
Design Coordination
Architectural drawings produced to Clark County specifications; structural details prepared for plan check submission.
Permit Submittal
Full document package filed under License #0090486 as contractor of record; SNWA water service review initiated simultaneously.
Plan Check Response
Correction letters addressed and resubmitted without delay; plan check approval confirmed before any ground is broken.
Foundation and Site Work
Footing or slab installation; Clark County foundation inspection scheduled and passed before framing begins.
Framing and Rough-In
Structural framing plus electrical, plumbing, and HVAC rough-in installed and inspected in sequence.
Insulation and Wallboard
Installed only after rough-in inspection clears — no surfaces closed before the prior phase is approved.
Finishes and Fixtures
Interior finishes, cabinetry, plumbing fixtures, and electrical devices completed to final inspection standard.
Final Inspection and CO
Certificate of Occupancy issued by Clark County after all inspections pass — the unit is legally habitable and rentable.
Full three-coat stucco application on every ADU exterior. Foundation inspection before framing. Every time.
We See the Lot Before We Draw a Line
Every ADU build opens with a parcel review — zoning classification, existing lot coverage, recorded easements, and utility access — so your buildable envelope is confirmed before any architectural drawings are commissioned.
What Happens After Your ADU Permit Is Issued
The permit issuance is a milestone — not the finish line.
Diagnostics
Once Clark County issues the permit, the build schedule is confirmed against the inspection sequence. Foundation type, utility connection method, and ADU type — detached versus attached — all affect how the inspection milestones line up. We map the sequence before breaking ground.
Implementation
Foundation is inspected before framing begins. Rough-in work — electrical, plumbing, mechanical — is inspected before insulation goes in. Each trade phase is completed, inspected, and cleared before the next starts, and walls are not closed before rough-in is approved. Las Vegas summer temperatures affect scheduling for exterior concrete and stucco, so pours and stucco applications are timed to morning temperature windows to avoid premature curing. Parcels across Henderson and the northwest corridor can also hit hardened subsurface soil that affects footing depth — our site assessment flags those variables before excavation. See our Las Vegas Construction Climate resource for how desert soil and heat affect sequencing.
Post-Service Testing and CO
Before we request the final inspection, every system is tested — electrical circuits confirmed live and grounded, plumbing pressure-tested for leaks, HVAC confirmed operational. The final inspection is scheduled only when the unit is ready to pass. The certificate of occupancy — CO — is the final Clark County approval that makes the ADU legally habitable and rentable, issued once all inspections pass and the building meets every structural, mechanical, and life-safety code requirement.
Construction Timed to Las Vegas Conditions
Concrete pours and three-coat stucco are scheduled to morning temperature windows to prevent premature curing, and footings are set for the hardened caliche soils common across Henderson and the northwest valley.
Where We Build ADUs Across the Las Vegas Valley
1 Home Construction builds ADUs throughout Clark County, Nevada.
We serve homeowners across the full Las Vegas valley — including Henderson, Summerlin, North Las Vegas, the southwest valley, and established neighborhoods in the northwest corridor. Lot sizes, soil profiles, and utility access vary across Clark County, and our team works with the specific conditions of your parcel.
Ready to Start Your Las Vegas ADU? Here's the First Move
The first step is a site assessment — not a design meeting. Tell us your address, your ADU goals, and whether you’re looking at a detached unit, a garage conversion, or an attached addition.
Email of****@***************on.com · 5875 S Rainbow Blvd #204, Las Vegas, NV 89118 · License #0090486
Frequently Asked Questions
Most ADU builds in Clark County take four to eight months from site assessment to CO. Plan check alone runs four to twelve weeks depending on submission completeness, with construction following permit issuance. Projects with separate utility connections or complex site conditions run longer. We give you a phase-by-phase timeline after the site assessment — not a generic estimate.
Detached ADU costs in Clark County typically range from $150,000 to $350,000 or more. Size, finish level, utility connection method, and site conditions all move that number, and soft costs — permit fees, engineering, and SNWA fees — add 10 to 20 percent on top of construction. Our ADU Cost page breaks down each variable by project type.
Attached ADUs tie into the existing structure’s foundation and load path, which adds a structural review step before framing. Detached units are treated as standalone structures — footing design, setback clearance, and utility connection handled independently. The inspection milestones are similar, but the sequencing of structural approvals differs enough that we map them separately at the start of each project.
Utility easements and subsurface soil conditions are the two most common causes. An easement running through the rear of a lot can eliminate the buildable envelope entirely, and hardened caliche layers in Henderson and the northwest valley can require deeper footings than the original design anticipated. Both are identified during the site assessment — before drawings are produced and before any money is spent on plans.
Existing improvements count toward your lot coverage limit. A pool, covered patio, or extended driveway all reduce your buildable area under Clark County code. We calculate your actual remaining coverage before design begins, so you know your buildable envelope before spending money on architectural drawings. For how pool placement interacts with ADU setbacks on single-family lots, see our ADU Single-Family page.
Licensed contractor submissions carry the weight of a Nevada State Contractors Board license behind the application, and Clark County plan check reviewers process licensed GC submissions differently than homeowner self-files. We file under General Construction License #0090486 — a 20-year compliance record attached to every document we submit on your behalf.
Correction letters are common and do not restart the entire process. We respond and resubmit quickly because we handle all permit tracking in-house — no mail-in delays, no third-party filing service. Most correction cycles resolve within one to two weeks when the response is handled by the same team that built the original package.
Homeowner attendance is not required. We schedule every inspection milestone — foundation, framing, rough-in, and final — and coordinate directly with the inspector, then notify you of outcomes. The only time we need you on-site is for decisions that affect finishes or layout changes you’ve requested.