ADU & DADU Construction in North Tacoma, Gig Harbor & University Place
Add flexible living space, increase property value, and create new opportunities with a professionally built ADU or DADU by a team with deep knowledge of ADU construction in the Tacoma area.
Accessory Dwelling Units (ADUs) and Detached Accessory Dwelling Units (DADUs) are one of the most effective ways to expand your property. Whether you’re building for family, rental income, or additional living space, Tru Lee Construction delivers high-quality ADU and DADU builds designed to fit your needs and your property. Our team connects homeowners with trusted professionals, including structural engineers and permitting experts, to streamline every step of the process. We help you understand the cost factors involved in ADU construction, from design and materials to permits and utilities, so you can make informed decisions.
From planning to completion, we provide a straightforward process with clear communication and craftsmanship you can trust. Constructing an ADU in Tacoma requires adherence to specific size and height regulations. Under the updated "Home in Tacoma" plan, both attached and detached ADUs are permitted our professional guidance ensures your project meets all local requirements.
Introduction to Accessory Dwelling Units
An accessory dwelling unit (ADU) is a secondary housing unit located on the same lot as a primary dwelling. ADUs can be attached to the main house or built as a detached ADU, offering homeowners a flexible living space for family, rental income, or a private office. In Tacoma and throughout Washington, ADUs—sometimes called backyard cottages or in-law suites—are a smart way to increase property value and make the most of your property. Building an ADU requires careful planning, including understanding local building codes, zoning laws, and the permitting process. With the right approach, adding an ADU can be a stress-free project that creates new opportunities and enhances your property’s value.
What We Do
Custom ADU & DADU Builds Designed for Your Property
We handle every phase of the project, ensuring your new space—whether a home addition, remodel, or new ADU—is functional, well-built, and aligned with local requirements. Our team specializes in integrating ADUs with your primary house, including additional ADUs (bump-outs) that extend directly from the main residence and share walls and utilities for seamless access. We also convert basements into separate living units, commonly known as basement conversion ADUs or basement apartments, providing a private space within your existing structure.
Our ADU/DADU services include:
- Detached ADU (backyard cottage) construction
- Attached ADU builds
- Addition ADUs (bump-outs) connected to the primary house
- Basement conversion ADUs (basement apartments/mother-in-law units)
- Garage-to-ADU conversions
- New standalone small homes
- Layout planning and design coordination
- Foundation, framing, and full construction
- Interior and exterior finish work
- Home additions and remodels related to ADU projects
Why Build an ADU or DADU?
Adding an ADU or DADU gives you flexibility and long-term value.
- Create rental income opportunities, including steady monthly earnings of $1,500 to $2,500 through long-term tenants or short-term rentals
- Provide space for family or guests, offering flexible living arrangements for adult children, aging parents, or visitors while maintaining privacy and independence
- Attract long-term tenants for stable income or use as a guest suite
- Increase overall property value—homes with ADUs can sell for approximately 35% more than similar homes without them
- Add an independent living space without moving, ideal for multigenerational families
- Maximize the use of your property with versatile options for renters, family, or guests
Types of ADUs
Homeowners have several options when it comes to adding an ADU to their property:
- Detached ADU (Backyard Cottage): A standalone structure separate from the main house, ideal for privacy and independence.
- Attached ADU: Built as an extension of the primary dwelling, sharing at least one wall with the main house.
- Basement ADU: Created by converting an existing basement into a secondary housing unit, perfect for properties with limited outdoor space.
- Garage Conversion: Transforms an existing garage into a livable ADU, maximizing the use of existing structures.
- Tiny Homes: Compact, efficient units that can serve as an affordable ADU option.
When planning your ADU project, consider factors such as lot size, zoning regulations, and design fees to ensure your new space complies with local requirements and fits your property’s needs.
How it works
Local Regulations and Zoning
Every ADU project must comply with local regulations, zoning laws, and building codes. In Tacoma and throughout Washington, requirements may include minimum lot size, setbacks, and maximum size for your ADU. Homeowners must obtain the proper permits and approvals from the city before construction begins. Working with experienced ADU builders who understand local regulations can make the permitting process stress-free and help keep your project on budget. By following all local requirements, you can create a permitted ADU that enhances your property and provides lasting value.
Built for Long-Term Quality
We focus on durable construction, professional installation, and attention to detail, including high-quality flooring as part of the interior finishing, so your ADU or DADU performs well for years to come. Our goal is to deliver a finished space that feels like a natural extension of your property.
Service Areas
We provide ADU and DADU construction services throughout North Tacoma, Gig Harbor, University Place, and surrounding communities, backed by extensive experience and in-depth knowledge of ADU construction in the Tacoma area.
Ready to add more space and value to your property?
Let’s talk about your ADU or DADU project and build something that works for your needs.