The Ultimate Guide to Building a DADU/ADU in Tacoma
A Detached Accessory Dwelling Unit (DADU) can transform your property, offering extra living space, rental income, or a flexible area for work or guests. If you’re considering building a DADU in Tacoma, understanding the local regulations and construction process is essential. In this guide, we’ll walk you through each step — from planning to move-in day — to make your DADU project a success. Keep in mind, this whole process only takes approximately 6 months from start to finish!
Step 1: Planning & Permits
Understanding Tacoma Regulations
Before breaking ground, it’s crucial to know the city’s requirements:
- Size Limit: DADUs must be under 1,000 sq ft.
- Setbacks:
- Side Yard: 5-foot minimum setback.
- Rear Yard: 5-foot setback (unless there’s an alley, in which case no rear setback is required).
- Power Lines: Locate them to ensure compliance with setback rules.
- Parking: While Tacoma doesn’t require parking for DADUs, we recommend planning a spot for your tenant.
Permit Assistance
Navigating permits can be complex, but we make it easy. Our in-house team works directly with the City of Tacoma to submit all plans and permits on your behalf, so you can enjoy a stress-free process.
Step 2: Design & Budgeting
Choosing the Right Layout
Think about how you’ll use the space:
- Purpose: Will it be a rental, a multigenerational living space, or a home office?
- Floor Plan: Optimize for space efficiency and future needs.
- Pre-Approved Plans: Check out our curated selection of plans to find the perfect fit. We offer a studio, 1 bedroom, 2 bedroom, garage with a 1 bedroom above, and a garage with a 2 bedroom above.
- Finishes: Collaborate with our in-house design team to choose the right materials and finishes.
Setting a Budget
Understanding your costs upfront helps prevent surprises:
- Key Costs: Site prep, materials, labor, and permits — we’ll walk you through it all. Prices start at $176,000 + tax.
- Financing Options: Explore construction loans, HELOCs, or cash financing.
- Contingency Funds: Plan a buffer for unexpected expenses.
Step 3: The Construction Process
Here’s what to expect during the build:
- Site Preparation: Clear and grade the land, and ensure utility access.
- Foundation Work: Set the stakes and pour the slab.
- Framing & Roofing: Build the structure and secure the roof.
- Plumbing & Electrical: Install essential systems, following city codes.
- Interior & Exterior Finishes: Add insulation, drywall, flooring, paint, siding, trim, and appliances.
- Landscaping: Decide on features like fencing, grass, native plants, or turf.
Step 4: Inspections & Move-In
Final Inspection
We ensure your DADU meets all local codes and arrange the final city inspection for occupancy approval.
Preparing for Move-In
If you’re renting, screen tenants and finalize lease agreements. If it’s a personal space, set up utilities and decorate to make it your own.
Step 5: Enjoy Your New Space!
Whether you’re earning passive income or creating a space that enhances your lifestyle, your DADU is sure to be a valuable addition to your property. We’re confident you’ll love the results — and we’re here to help every step of the way.
Thinking about building a DADU in Tacoma? Contact us today to get started!