Backyard Cottage Architect

Your backyard cottage architect.

A black and white image of a custom home residence

At Refine Design Architecture, we are your starting point for any backyard cottage project—guiding you from first sketch through construction. As licensed backyard cottage architects in Washington, we collaborate closely to craft site-specific accessory dwelling units that meet local permitting requirements and elevate daily living. Our work goes beyond drawings: we choreograph light, views, and circulation to create memorable architectural moments that make you pause, reflect, and connect with your surroundings. Whether designing a rental unit, guest house, or multi-generational living space, our high-caliber design, detailed documentation, and personalized service shape backyard cottages your family will cherish for generations.

Meet our Residential Architect Team

What can we do for you?

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01. Pre-Design

This is where we get on a first name basis. Our team of architects collaborates with you to understand your backyard cottage vision and goals, while verifying zoning requirements and setback restrictions for accessory dwelling units.

02. Design

This is the good stuff. With your ideas and our design expertise, our team puts together several cottage design options. We explore efficient floor plans and look at renderings of your backyard cottage in 3D.

03. Permits

At this point, your backyard cottage design is ready to be submitted to your local jurisdiction to obtain necessary building permits. We can lead this effort, or can assist you in obtaining ADU permits.

04. Construction

Lastly, we provide you with construction drawings for your backyard cottage, detailed to a level that can be given to a general contractor to start building. We can help vet builders and coordinate during construction to keep your cottage project aligned.

Don't just take our word for it.

Here's what our clients have to say.

"RD's team provided us with a very special creative process designing our home...If you are seriously looking to elevate your next project, work with Refine Design!"

Shy F.

Mountain Lodge

"Stone and Julia were very professional and extremely helpful in designing our project. Their patience and attention to detail were integral in configuring a change of use building."

Dustin D.

Ballard DADU

"They not only helped bring our vision to life, but offered a point of view we had not thought of. I highly recommend this duo - they are incredibly easy to work with."

Kendall F.

Gig Harbor Remodel

"No words can describe how exceptional Julia and Stone are at their work...Not only did they research extensively into the building codes but they poured so much thought into the design."

Yu Chi S.

Seattle Bathroom Remodel

"It was great working with Refine Design Architecture for our cabin expansion. They listened to our requirements, offered feedback and produced designs that fulfilled our vision"

Antonio G.

Leavenworth Cabin Addition

"Their work was on schedule, on budget, and their ideas were very helpful. If you're searching for an architectural team that can fit the bill, look no further."

James M.

Accessibility Retrofit

Have questions?
We have answers.

At Refine Design Architecture, we believe that building a backyard cottage isn't a "one size fits all" process. Every accessory dwelling unit project is unique to your property and goals.

What is the backyard cottage architect process?

The backyard cottage process follows a clear path: initial consultation and feasibility study → schematic design and floor plan development → design development and 3D visualization → permit drawing preparation → construction documentation. We begin by understanding your goals for the accessory dwelling unit, whether it's rental income, guest accommodation, or family housing. Our team then navigates zoning requirements specific to ADUs while crafting a design that maximizes your lot's potential. From concept to construction, we guide you through each phase with transparency and expertise.

Do I need a licensed architect for my backyard cottage?

In Washington State, while not always legally required, hiring a licensed architect for your backyard cottage is highly recommended. Accessory dwelling units involve complex zoning regulations, setback requirements, and design challenges that benefit from professional expertise. Our team understands the nuances of ADU permitting and can help navigate restrictions while maximizing your cottage's potential. A licensed architect ensures your project meets all building codes and creates a well-designed space that adds lasting value to your property.

What does backyard cottage construction cost?

Backyard cottage construction costs vary widely based on size, complexity, site conditions, and material selections. Factors affecting your budget include foundation requirements, utility connections, finish levels, and local labor costs. Site challenges like steep slopes or limited access can impact expenses, while energy-efficient features may increase upfront costs but provide long-term savings. We work with you during design to make informed decisions that balance your vision with your budget, providing cost guidance throughout the process.

How long does a backyard cottage project take?

A typical backyard cottage project takes 12-24 months from initial consultation to move-in. The design phase typically requires 2-4 months, including feasibility studies, schematic design, and permit drawings. Permit approval can take 3-8 months depending on your jurisdiction and project complexity. Construction duration varies from 6-12 months based on cottage size and site conditions. Our team helps streamline the process by preparing thorough documentation and maintaining clear communication with all parties throughout your project timeline.

How much does a backyard cottage architect cost?

Architect fees for backyard cottage projects typically range from 8-15% of total construction cost, depending on project scope and complexity. We offer both percentage-based and fixed-fee structures to suit different project needs. Our comprehensive services include feasibility studies, design development, permit assistance, and construction administration. The investment in quality architectural services pays dividends through thoughtful design, efficient permitting, and construction oversight that helps avoid costly changes and delays during building.

Why hire Refine Design Architecture for your backyard cottage?

Our team specializes in accessory dwelling units and understands the unique challenges of backyard cottage design. We excel at maximizing small spaces while creating homes that feel spacious and welcoming. Our expertise in local permitting processes ensures smooth approval, while our design approach creates cottages that complement your existing home and landscape. From rental income optimization to multi-generational living solutions, we craft backyard cottages that serve your specific goals while adding lasting value to your property.