Professional ADU Builders in North Valleys, NV
Looking for a trusted ADU builders in North Valleys,NV? Want extra income every month? Need space for aging parents or adult kids? An ADU (Accessory Dwelling Unit) could be your answer!
Popular ADU Services in North Valleys
Our ADU Process
Step 1: Tell Us Your Goals
Share your ADU vision, budget, and property details through our simple online form or give us a call.
Step 2: We Match You With Local Builders
We connect you with vetted ADU contractors who have experience, understand Washoe County's permitting process, and can work with your neighborhood's characteristics.
Step 3: Get Free Design Ideas & Quotes
Receive detailed proposals and initial design concepts at no cost or obligation. Contractors will visit your property to assess lot layout, utilities, and site conditions.
Step 4: Choose Your Builder
Compare your options, review portfolios of completed ADU projects, and select the contractor who's the best fit for your project and budget.
Step 5: Navigate Permits Together
Your builder handles Washoe County permits and, if applicable, HOA architectural approvals, keeping you informed throughout the approval process.
Step 6: Watch Your ADU Come to Life
Your chosen builder handles all aspects of construction—foundation, framing, utilities, finishes, inspections, and final walk-through—while keeping you informed every step of the way.
Let's Start Your ADU Project in North Valleys
Let’s chat about your ideas! Getting started is easy – simply reach out with details about your ADU project, and we’ll connect you with qualified, licensed contractors.

ADUs in North Valleys — What Homeowners Should Know
Growing Community Character
North Valleys encompasses several distinct communities including Cold Springs, Golden Valley, Lemmon Valley, Stead, Panther Valley, and Red Rock, stretching along Highway 395 north of Reno. The area has experienced significant growth over the past decade, driven by the arrival of major distribution centers including Amazon, Urban Outfitters, and Petco facilities. This growth has brought new retail options, restaurants, and services while maintaining the area’s semi-rural character. Many properties sit on half-acre to full-acre lots, providing ample space for accessory dwelling units. The community attracts families seeking affordable housing with room for animals, recreational vehicles, and outdoor activities. This blend of suburban development and rural lifestyle makes North Valleys well-suited for ADU construction.
Diverse Property Sizes and Zoning
North Valleys properties fall under various Washoe County zoning designations including Low Density Suburban, Medium Density Suburban, Low Density Rural, and Medium Density Rural classifications. Your property’s specific zoning determines whether you can build an ADU by right, need an administrative review, or require a special use permit. Most residential properties in North Valleys are zoned to allow detached accessory dwellings with administrative review rather than full public hearings. Lot sizes vary considerably throughout the communities, from quarter-acre suburban lots to multi-acre rural parcels. Larger properties often provide flexibility in ADU placement and may support larger unit sizes within Washoe County’s regulations.
Washoe County ADU Regulations and Requirements
Washoe County has specific requirements for accessory dwelling units that vary by zoning classification. For most North Valleys properties zoned Low Density Suburban, Medium Density Suburban, or rural residential classifications, detached ADUs require a DADAR (Detached Accessory Dwelling Administrative Review) before obtaining a building permit. This administrative process is faster and less costly than special use permits. ADU size restrictions depend on your zoning—most commonly, units cannot exceed 50% of your main dwelling’s size or 1,200 square feet, whichever is less. Properties must meet minimum lot size requirements, and the ADU must be clearly secondary to your main residence. Setback requirements typically mandate that ADUs remain five feet from property lines and cannot be placed in side yard setbacks. Manufactured homes no older than six years can serve as ADUs if they meet size requirements.
Utility Configurations Across Communities
Utility infrastructure varies across North Valleys communities. Some established neighborhoods connect to municipal water and sewer service through Sun Valley GID or direct Washoe County service. However, many properties throughout North Valleys operate on private well water and individual septic systems, particularly in Lemmon Valley, parts of Cold Springs, and more rural areas. If your property uses septic, Washoe County regulations historically required a second septic system for ADUs, though recent code amendments have modified some requirements. Your contractor should verify your specific property’s utility configuration during initial planning. Well and septic properties require additional planning for utility extensions but remain fully viable for ADU development. Properties on municipal utilities typically experience simpler and less expensive utility connection processes.
High Desert Climate Considerations
North Valleys sits at approximately 4,600 to 5,000 feet elevation with high desert climate characteristics. Summers are hot and dry with temperatures in the upper 80s to mid-90s, while winters bring cold temperatures and moderate snowfall. The area receives about 7-9 inches of precipitation annually, mostly falling as snow between November and March. These conditions affect ADU construction material choices and design considerations. Proper insulation becomes essential for energy efficiency, as heating and cooling costs impact both construction budgets and long-term operating expenses. The dry climate means solid wood requires proper sealing to prevent cracking and warping. Many North Valleys properties enjoy open views and natural lighting opportunities, which ADU designs can capitalize on through thoughtful window placement and orientation.
Practical Considerations for Animal Owners
Many North Valleys residents keep horses, chickens, goats, dogs, and other animals on their properties. Washoe County regulations allow various animals based on lot size, and this lifestyle represents one of the area’s key attractions. When planning ADU placement, consider how the unit’s location affects existing or future animal facilities, pastures, and outdoor spaces. Proper setbacks ensure your ADU doesn’t interfere with animal keeping while maintaining appropriate separation for future residents’ comfort. Contractors experienced in North Valleys understand these considerations and can help you balance ADU placement with your property’s current and planned uses. Some homeowners use ADUs to house property managers or caretakers who help maintain larger properties and care for animals.
ADU Building Costs in North Valleys
ADU construction costs in North Valleys typically range from $120,000 to $350,000 for detached units, with most complete projects falling between $150,000 and $250,000. Garage conversions and interior conversions generally cost less, ranging from $60,000 to $150,000 depending on existing conditions and finish quality. Manufactured ADU installations typically range from $100,000 to $200,000 including site preparation and utility connections.
Cost Factors by ADU Type
Detached ground-up construction represents the most expensive ADU option but offers maximum flexibility in design and placement. A basic 600-square-foot detached ADU with standard finishes typically costs $150,000 to $210,000, while a 900-square-foot unit with quality finishes runs $200,000 to $300,000. Construction costs average $250 to $400 per square foot depending on finish quality, site conditions, and design complexity.
Garage conversions offer cost savings by utilizing existing foundation and structure. Converting a two-car garage into a 400-500 square foot ADU typically costs $60,000 to $120,000, depending on existing utilities and desired finishes. These projects require proper insulation, drywall, electrical and plumbing installation, and flooring, along with addressing parking replacement if required.
Manufactured ADUs provide more predictable pricing and faster installation timelines. A manufactured unit itself costs $80,000 to $150,000 depending on size and features, with site preparation, foundation, utility connections, and delivery adding $30,000 to $60,000. Total installed costs typically range $110,000 to $210,000.
North Valleys-Specific Cost Considerations
Properties on well and septic systems face additional costs compared to those on municipal utilities. Well water extension to an ADU typically adds $3,000 to $8,000 depending on distance and depth requirements. Septic system considerations can significantly affect budgets—properties requiring a second septic system may add $15,000 to $30,000 to project costs. Recent Washoe County code changes have modified some septic requirements, and contractors should verify current regulations during planning.
Site preparation costs vary based on your property’s terrain and existing conditions. Level lots with good drainage require minimal grading, while sloped properties may need excavation and retaining walls adding $5,000 to $20,000. North Valleys’ rocky soil in some areas can affect foundation costs if extensive excavation becomes necessary.
Utility extension distances affect costs considerably. If your proposed ADU sits far from your main home’s utility connections, electrical, plumbing, and gas line extensions add to budgets. Budget $2,000 to $6,000 for utility extensions on most properties, with longer runs requiring higher investments.
Permitting and Administrative Costs
Washoe County’s DADAR (Detached Accessory Dwelling Administrative Review) process costs less than special use permits. Administrative review fees typically run $1,500 to $3,000 depending on project complexity. Building permit fees are calculated based on project valuation, generally adding $3,000 to $8,000 to total costs. If your project requires engineered plans for foundation or structural elements, engineering fees add $2,000 to $5,000. Many contractors include permitting costs in their estimates, while others itemize these separately.
Understanding Total Investment
The contractors in our network provide itemized estimates clearly separating design, permitting, site preparation, construction, and utility connection costs. This transparency helps you understand where your investment goes and allows you to make informed decisions about features and finishes. Request estimates from multiple contractors to compare approaches and pricing. Quality contractors explain their pricing structure and answer questions about cost factors specific to your property and design choices.
Why Use Our Network Of Local ADU Builders
Understanding Washoe County’s ADU Process
Contractors experienced in North Valleys understand Washoe County’s DADAR process, size limitations by zoning classification, and setback requirements specific to different regulatory zones. They know which properties qualify for administrative review versus special use permits, how to prepare complete applications that satisfy county reviewers, and how to respond to any correction letters efficiently. This familiarity prevents delays and ensures your project moves smoothly through the permitting process. Contractors unfamiliar with Washoe County’s specific ADU regulations often encounter problems that extend timelines and increase costs.
Experience with North Valleys Properties
Local contractors recognize the variety of property types, lot sizes, and utility configurations throughout North Valleys communities. They understand which neighborhoods connect to municipal utilities and which rely on well and septic systems. They’ve worked with the area’s zoning classifications and know how to maximize ADU potential within regulatory constraints. This experience translates to more accurate estimates and fewer surprises during construction.
Knowledge of Well and Septic Requirements
Contractors working regularly in North Valleys understand the complexities of building ADUs on properties with private utilities. They know how to assess septic system capacity, what Washoe County requires for utility connections, and how to plan projects that meet both building codes and health department standards. They maintain relationships with well drillers, septic contractors, and utility providers serving the area, streamlining coordination and often securing better pricing.
Familiarity with Local Conditions
North Valleys contractors understand the area’s high desert climate and its implications for construction. They know which insulation levels provide the best value for energy efficiency, which materials perform well in the dry climate and temperature swings, and how to design for natural cooling in summer and warmth in winter. They plan construction schedules around weather patterns, understanding that winter weather can affect timelines while summer provides optimal building conditions.
Community Investment and Accountability
Contractors based in North Valleys or the greater Reno area depend on their reputation within the community. They understand that quality work leads to referrals in an area where neighbors talk and word-of-mouth matters. Their local presence means they’re available for warranty work, follow-up questions, and future projects. This accountability ensures contractors remain invested in your satisfaction long after your ADU is complete.
Licensed & Insured Contractors Only
Every contractor in the Reno Home Remodel network maintains active Nevada contractor licensing and carries current liability insurance and workers’ compensation coverage. We verify these credentials before making referrals. ADU construction requires proper licensing and insurance to protect your investment and provide recourse if issues arise. The Nevada State Contractors Board oversees contractor licensing, and we confirm compliance before connecting contractors with homeowners.
Need Help?
Frequently Asked Questions About ADU in North Valleys
Below are some of the most common questions Our Network get from families about ADU. If you have any other questions contact us!
How long does it take to build an ADU?
Timeline varies by ADU type:
- Garage conversion: 3-5 months (including permits)
- Detached new construction ADU: 6-10 months (including permits)
- Basement ADU: 3-6 months (including permits)
Washoe County permitting typically takes 4-8 weeks. Construction time depends on size, complexity, weather, and material availability.
Can I build an ADU if I'm in an HOA?
It depends on your specific HOA’s CC&Rs (Covenants, Conditions & Restrictions). Some Sparks HOAs, particularly in newer master-planned communities, have restrictions on detached structures or require architectural approval. Your contractor can help review your HOA documents and navigate the approval process if allowed.
How much rent can I charge for an ADU?
ADU rental rates typically range from $1,200–$2,000+ per month depending on:
- Size (studio vs. 1-2 bedroom)
- Finishes and amenities
- Location within Sparks
- Market conditions
Spanish Springs ADUs often command higher rents than older neighborhoods due to the area’s desirability and newer construction.
Do I need to upgrade my electrical panel?
Many older Sparks homes (pre-1990) have 100-150 amp electrical service. Adding an ADU typically requires upgrading to 200 amp service to handle the additional load. Newer homes may already have adequate capacity. Your contractor evaluates this during initial planning.
REAL STORIES FROM SATISFIED CUSTOMERS



Talk to an ADU Builder in North Valleys Today
Whether you’re in Cold Springs, Golden Valley, Lemmon Valley, Stead, Panther Valley, Red Rock, or any North Valleys community, building an accessory dwelling unit offers flexibility and value for your property. Reno Home Remodel connects homeowners throughout North Valleys with experienced contractors who understand the area’s unique characteristics and Washoe County’s ADU requirements.

