How to Start Your ADU Project With Confidence
Ready to build an accessory dwelling unit (ADU)? Here are the essential steps to help you start the right way—on time, on budget, and with clarity from day one.
1. Define Your Purpose and Goals
Before drafting any plans, it’s crucial to know why you're building an ADU. Are you looking to generate passive income through rentals? Do you want a space for aging family members or future guests? Your intent influences almost every decision down the line.
- Rental income opportunities
- Private space for family or caregivers
- Property value increase and flexibility
2. Check Local Zoning and Property Feasibility
Next, make sure your property is eligible for an ADU. Every city or county has its own zoning laws and land use rules. You need to confirm that your lot complies with all local requirements before moving forward.
- Setback and lot coverage requirements
- Parking rules and height limits
- Utility access, sewer connections, and easements
Many cities offer pre-application meetings or feasibility checklists. Use them to avoid delays and unnecessary surprises.
3. Set a Realistic Budget
Establish a budget early. It helps you make smart decisions and avoid financial strain. Account for all the major components—more than just construction costs.
- Design and permitting fees
- Site work and utility connections
- Construction labor and materials
- Contingency funds for unexpected costs
Most ADU projects range between $60,000 and $250,000, depending on location and scope.
4. Decide on a Design Strategy
You can either create a custom design or choose a pre-designed plan. Each route affects your budget and permitting timeline.
- Custom Design: Personalized, but takes more time and money
- Pre-Designed Plans: Faster and more cost-effective
Want to save time? Browse permit-ready layouts at ADUPatterns.com.
5. Understand the Permitting Process
Permits vary by location but often require detailed plans and compliance documentation. Being prepared speeds up approval.
- Site and floor plans
- Structural and energy code compliance
- Grading, drainage, and utility details
Work with a professional who understands your local codes to streamline this step.
6. Build the Right Team
An experienced team makes all the difference. Look for people who have worked on ADUs before—they’ll help you avoid costly missteps.
- Architect or designer familiar with ADUs
- Licensed general contractor with residential experience
- Permit expediter (optional but helpful)
Always get multiple bids, check references, and confirm licenses before hiring.
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Start Strong. Stay Focused.
The key to a smooth ADU build is preparation. Define your goals, know your budget, and surround yourself with professionals who understand the process.
Need a head start? Explore permit-ready ADU designs at adupatterns.com/collections/house-plan.