Accessory Dwelling Units (ADUs) are becoming a popular option for homeowners in Kirkland, WA, who want to maximize their property’s potential. Whether you’re looking to create a rental unit for extra income, provide a space for family members, or simply add value to your home, building an ADU is a smart investment.
However, the process of building an ADU involves navigating permits, understanding costs, and making informed decisions. In this blog post, we’ll walk you through everything you need to know about building an ADU in Kirkland, including permits, costs, and tips to make the process smoother.
What is an ADU?
An ADU, or Accessory Dwelling Unit, is a secondary living space on a property with an existing single-family home. ADUs can be detached (like a backyard cottage), attached (like a basement apartment), or even a converted garage. They typically include a kitchen, bathroom, and living area, making them fully functional living spaces.
ADUs are a great way to:
- Generate rental income.
- Provide housing for family members or guests.
- Increase your property’s value.
- Make better use of underutilized space on your property.
Why Build an ADU in Kirkland?
Kirkland’s housing market is competitive, and the city has been actively encouraging the construction of ADUs to address housing shortages. The city has relaxed zoning laws and streamlined the permitting process to make it easier for homeowners to build ADUs. Additionally, ADUs are an eco-friendly way to add housing without expanding urban sprawl.
Steps to Build an ADU in Kirkland
Building an ADU involves several steps, from planning and design to construction and permitting. Here’s a step-by-step guide to help you get started:
1. Research Zoning and Regulations
Before you start planning your ADU, it’s important to understand Kirkland’s zoning laws and regulations. Some key points to consider:
- Lot Size: Your property must meet minimum lot size requirements.
- Setbacks: ADUs must be built a certain distance from property lines and existing structures.
- Height Restrictions: There are limits on how tall your ADU can be.
- Parking Requirements: In most cases, you don’t need to provide additional parking for an ADU, but it’s good to check.
The City of Kirkland’s Planning and Building Department website is a great resource for understanding these rules.
2. Plan Your ADU
Once you understand the regulations, start planning your ADU. Consider the following:
- Type of ADU: Will it be detached, attached, or a conversion?
- Size: ADUs in Kirkland can be up to 1,000 square feet, or up to 50% of the primary home’s size (whichever is smaller).
- Design: Think about the layout, number of rooms, and features you want.
- Budget: Determine how much you’re willing to spend and prioritize accordingly.
3. Hire a Designer or Architect
Unless you’re an experienced builder, it’s a good idea to hire a professional to design your ADU. A designer or architect can help you create a functional and aesthetically pleasing space while ensuring it meets all building codes and regulations.
4. Obtain Permits
Permits are a crucial part of building an ADU in Kirkland. The permitting process ensures that your ADU is safe, compliant with zoning laws, and meets building codes. Here’s what you’ll need:
- Building Permit: This covers the construction of the ADU.
- Electrical, Plumbing, and Mechanical Permits: These are required for the respective systems in your ADU.
- Land Use Permit: This ensures your ADU complies with zoning laws.
The City of Kirkland offers a pre-application meeting where you can discuss your project with city staff and get feedback before submitting your permit application. This can help streamline the process and avoid delays.
5. Hire a Contractor
Unless you’re planning to build the ADU yourself, you’ll need to hire a licensed contractor in Kirkland, WA. Look for a contractor with experience building ADUs in Kirkland. Get multiple quotes, check references, and ensure they’re familiar with local building codes and permitting requirements.
6. Construction
Once you have your permits and contractor in place, construction can begin. This phase includes:
- Site preparation (clearing, grading, etc.).
- Foundation work.
- Framing and roofing.
- Installing electrical, plumbing, and HVAC systems.
- Finishing touches like flooring, painting, and fixtures.
7. Final Inspection
After construction is complete, your ADU will need to pass a final inspection to ensure it meets all building codes and safety standards. Once approved, you’ll receive a Certificate of Occupancy, allowing you to use the ADU.
Costs of Building an ADU in Kirkland
The cost of building an ADU in Kirkland can vary widely depending on factors like size, design, materials, and labor. Here’s a rough breakdown of costs:
- Detached ADU:
- 200,000–
- 200,000–400,000
- Attached ADU:
- 150,000–
- 150,000–300,000
- Garage Conversion:
- 100,000–
- 100,000–200,000
These costs include design, permits, materials, and labor. Keep in mind that unexpected expenses can arise, so it’s a good idea to budget an additional 10–20% for contingencies.
Tips for Building an ADU in Kirkland
Building an ADU can be a complex process, but these tips can help make it smoother:
- Start with Research: Familiarize yourself with Kirkland’s ADU regulations and requirements before you begin.
- Work with Professionals: Hire experienced designers, architects, and contractors who understand the local market.
- Plan for the Long Term: Design your ADU with flexibility in mind. For example, consider features that make it accessible for aging family members.
- Be Patient: The permitting and construction process can take time, so be prepared for delays.
- Consider Financing Options: If you need help funding your ADU, explore options like home equity loans, construction loans, or ADU-specific financing programs.
Benefits of Building an ADU
Building an ADU offers numerous benefits, including:
- Additional Income: Renting out your ADU can provide a steady stream of passive income.
- Increased Property Value: ADUs can significantly increase your home’s resale value.
- Flexibility: An ADU can serve as a guest house, home office, or space for family members.
- Sustainability: ADUs make efficient use of existing land and infrastructure, reducing urban sprawl.
Conclusion
Building an ADU in Kirkland is a rewarding project that can provide financial, practical, and environmental benefits. By understanding the permitting process, budgeting carefully, and working with experienced professionals, you can create a functional and attractive ADU that meets your needs and complies with local regulations.
If you’re ready to take the next step, start by researching your property’s zoning requirements and consulting with a designer or architect. With careful planning and execution, your ADU can become a valuable addition to your home and a smart investment for the future. So, why wait? Start planning your ADU today and unlock the full potential of your property!
