ADU construction cost Las Vegas homeowners can expect varies by type and size. A garage conversion ADU typically ranges from $50,000 to $120,000. A small backyard cottage construction project or compact detached unit ranges from $100,000 to $200,000. A fully custom detached ADU construction project can range from $200,000 to $400,000 or more depending on size, finishes, and site conditions. Fortress provides a free, itemized quote so you know exactly what to expect before committing.

The most common types of accessory dwelling unit construction projects in Las Vegas include detached ADU construction, garage conversion ADUs, attached ADUs that share a wall with the main home, and backyard cottage construction projects. The right type for your property depends on your lot size, available outdoor space, existing structures, zoning regulations, and intended use. Our ADU contractors review all of these factors during the free consultation.

Yes. All accessory dwelling unit construction in Las Vegas requires permits from Clark County or the City of Las Vegas depending on your address. Permits are required for structural work, electrical, plumbing, and mechanical systems regardless of the ADU type. Our ADU permit services cover the complete application and approval process, including engineering drawings, permit submission, and required inspections, so you never have to manage the regulatory side yourself.

A garage conversion ADU typically takes two to four months from permit approval to completion. A backyard cottage construction or small detached ADU project usually takes four to six months. Larger custom ADU construction projects can take six to eight months or more depending on scope and complexity. We provide a detailed construction timeline before work begins and deliver regular progress updates throughout the build as part of our ADU project management service.

In most cases, yes. Nevada and Clark County permit homeowners to rent accessory dwelling units subject to applicable zoning rules and, in some areas, short-term rental regulations. Rental feasibility is one of the first topics we cover during the initial consultation, and our team ensures your custom ADU construction project is designed and permitted in a way that supports your intended rental use.

Yes. ADU permit services are a core part of every accessory dwelling unit construction project we take on. Our team manages the complete permit application process, coordinates with Clark County or City of Las Vegas building departments, schedules all required inspections, and ensures your structure meets all applicable zoning, setback, and height requirements. You do not need to navigate any part of the process on your own.

The best ADU type depends on your lot, your budget, and your goals. A garage conversion ADU is the most cost-effective option for homeowners with an existing underutilized garage. A detached ADU construction project delivers the highest level of privacy and long-term value but requires more investment. A backyard cottage construction project is ideal for homeowners who want a well-designed compact unit without a large footprint. Our residential ADU builder team will recommend the best option for your specific property during the free consultation.

Yes. Every project we take on is a custom ADU construction engagement. We do not use pre-drawn plans or standard templates. Our ADU design and build services team develops a fully tailored design for your lot, your aesthetic preferences, and your intended use, ensuring the finished structure integrates naturally with your main home and maximizes the value of your property.

Fortress Development Group provides ADU construction services across Las Vegas, Henderson, Summerlin, North Las Vegas, Enterprise, Spring Valley, Green Valley, Southern Highlands, Paradise, Whitney, Boulder City, Laughlin, and surrounding Nevada communities. If you are unsure whether we cover your area, contact us and we will confirm.

Yes. A professionally built accessory dwelling unit consistently adds meaningful value to a Las Vegas property. Custom ADU construction increases total livable square footage, provides rental income potential, and broadens buyer appeal significantly. ADU development services are widely regarded as one of the highest-return investments available to Las Vegas homeowners in the current market, particularly given the strong demand for rental housing across the valley.

Getting started is straightforward. Contact us to schedule your free consultation and site assessment. Our ADU contractors will visit your property, review your lot for feasibility, discuss your goals and intended use, and outline the scope, timeline, and ADU construction cost Las Vegas figures involved for your specific project. There is no obligation and no pressure. From there, we move forward at whatever pace works for you.