Accessory Dwelling Units in Enumclaw, Washington

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Creating Versatile Spaces for Modern Homeowners

In Enumclaw, Washington, property owners are increasingly looking for innovative ways to maximize the potential of their homes. Boise Creek Construction, serving Enumclaw, Washington, and nearby areas including Bonney Lake, Sumner, Covington, Maple Valley, Auburn, Puyallup, Edgewood, and South Hill, specializes in creating high-quality accessory dwelling units (ADUs). Also known as in-law suites, backyard cottages, or secondary housing units, ADUs provide a practical solution for families, investors, and homeowners who want to add space without sacrificing quality or design. These dwellings offer flexibility, additional income potential, and a way to adapt properties to today’s evolving housing needs.

With more than 40 years of experience in the region, Boise Creek Construction helps homeowners reimagine their properties with craftsmanship rooted in local tradition. Accessory dwellings are more than just an addition; they are carefully designed living quarters that balance comfort, privacy, and modern amenities. Whether you are considering a standalone cottage, a garage conversion, or an attached unit, our team provides the expertise needed to bring these projects to life.


From permitting and planning to construction and finishing, our approach ensures your accessory dwelling complies with Washington State building codes while enhancing your property’s function and value. With decades of hands-on experience, we bring both knowledge and creativity to every project, delivering ADUs that are efficient, elegant, and tailored to the unique needs of homeowners in Enumclaw and surrounding communities.

Benefits of Accessory Dwellings

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Increased Property Value

Adding an ADU enhances the overall worth of a home. These secondary units provide long-term investment security while offering flexible living arrangements for future buyers. Well-designed ADUs also improve curb appeal and create a perception of modern, versatile living, making the property more attractive to potential purchasers.

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Multi-Generational Living

ADUs create private, comfortable spaces for extended family. They allow households to support one another while maintaining independence, providing solutions for aging parents or adult children. Thoughtfully planned units also foster family harmony by offering separate entrances, private amenities, and distinct living quarters.

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Rental Income Potential

ADUs offer a reliable income stream through rental opportunities. They provide homeowners with financial flexibility while meeting the increasing demand for secondary housing. Rental units can be tailored for long-term tenants or short-term stays, creating a steady revenue source without compromising the primary residence’s functionality.

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Efficient Use of Space

Accessory dwellings make use of underutilized property areas, such as backyards, garages, or basements. Maximizing available space allows homeowners to expand living options without reducing outdoor recreational areas. This approach also makes development more practical, avoiding costly land purchases while enhancing property functionality.

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Sustainable Housing Option

ADUs promote eco-friendly living by reducing the need for larger developments and excessive land consumption. Compact, energy-efficient designs lower environmental impact while maintaining comfort. Incorporating sustainable materials, energy-saving appliances, and smart design contributes to greener living and reduced long-term operational costs.

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Flexibility in Design

Each ADU can be customized to match the home’s architectural style and individual preferences. Options include open-concept layouts, multi-functional spaces, or specialized rooms. This adaptability allows homeowners to create units that serve specific purposes, from guest accommodations to work-from-home spaces, without compromising aesthetics or functionality.

Our Accessory Dwelling Services

Detached ADU Construction

We specialize in standalone cottages or backyard homes that function independently. These detached units are ideal for long-term rentals or private family quarters while maintaining separation from the main house. Our team handles every step from design to finishing, ensuring the unit integrates seamlessly with the property and meets all functional and aesthetic requirements.

Garage Conversions

Transform your unused or underutilized garage into a functional living space. Garage conversions are cost-effective, preserve outdoor space, and can be designed to include full kitchens, bathrooms, and private entrances. We work closely with homeowners to maximize layout efficiency, install modern amenities, and ensure the converted space is comfortable and code-compliant.

Basement ADUs

Basements can be converted into separate, fully functional apartments that offer both privacy and convenience. Basement ADUs are perfect for creating income-generating rental units or private quarters for extended family. We provide tailored solutions to optimize lighting, ventilation, and layout, transforming underutilized areas into stylish, livable spaces.

Attached ADU Additions

Attached units extend from the main home while providing a separate entrance and independent amenities. This is an excellent option for families who want proximity without sacrificing privacy. We manage the entire process, from structural modifications to finishing touches, ensuring a cohesive design that complements the existing home.

ADU Design & Planning

We provide complete design and planning services to ensure your ADU complies with building regulations and maximizes space utilization. Our tailored approach balances functionality, aesthetics, and efficiency. We collaborate closely with homeowners to translate ideas into practical, visually appealing, and code-compliant plans that enhance the property’s overall value.

Permit & Code Compliance

Navigating building codes and municipal permits can be complex. We handle the permitting process from start to finish, ensuring your ADU is built to code and ready for inspection without delays. Our expertise reduces the risk of costly mistakes and guarantees a smooth, hassle-free construction experience.

Strategic Solutions for Secondary Housing Needs

Accessory dwellings are reshaping the way homeowners think about property value, family living, and long-term investment. These secondary housing units offer unmatched versatility, serving as rental spaces, family quarters, or flexible living solutions. At Boise Creek Construction, our decades of experience allow us to approach each project with care, attention to detail, and a deep understanding of building standards and community values of Enumclaw, Washington, and surrounding areas, including Kent, Federal Way, East Renton Highlands, Des Moines, Parkland, Tacoma, and Renton. With over 40 years of construction expertise, we specialize in transforming underutilized property space into highly functional, attractive living environments.

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From detached cottages nestled in Enumclaw’s scenic backyards to modern garage or basement conversions, our accessory dwellings enhance both lifestyle and property value.

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FAQ's

Got Questions? We’ve Got Answers.

  • What is an accessory dwelling unit (ADU)?

    An ADU is a secondary living space on your property, such as a backyard cottage, basement apartment, or garage conversion. It provides independent housing with kitchens, bathrooms, and living areas while sharing the main property.

  • What types of ADUs do you build?

    We construct detached units, attached additions, garage conversions, and basement apartments. Each ADU is designed to suit your property, meet zoning regulations, and provide functional, attractive living spaces for family, guests, or rental opportunities.

  • Are ADUs legal in Enumclaw?

    Yes. Local zoning and building codes regulate ADUs. With 40+ years of experience, we navigate permitting, design, and compliance requirements, ensuring your accessory dwelling meets all standards while maximizing your property’s potential.

  • How long does building an ADU take?

    Project timelines vary based on size, design complexity, and permitting. Most ADUs take several months from planning to completion. We provide realistic schedules and maintain open communication to keep your project on track.

  • Do you provide design and planning services?

    Absolutely. We offer full design-build services, creating layouts that maximize space, comfort, and efficiency. Our team ensures your ADU complements your home’s style while providing independent, functional living tailored to your goals.

  • Can ADUs be rented out?

    Yes, in many cases. ADUs can generate rental income if permitted by local zoning laws. We ensure your design complies with requirements while creating safe, appealing spaces for tenants or short-term rentals.

  • What are the benefits of adding an ADU?

    ADUs increase property value, provide flexible living arrangements, and create income opportunities. They’re ideal for multigenerational housing, guest spaces, or downsizing without leaving your property, offering both lifestyle and financial advantages.

  • What areas do you serve?

    Boise Creek Construction proudly serves Enumclaw, Washington, and surrounding communities. With over 40 years of remodeling expertise, we are trusted for delivering high-quality accessory dwellings that expand your living options and add long-term value.