Mountain Modern custom home entrance with stone columns, wood siding, large glass doors and landscaped walkway
Outdoor View
Modern Farmhouse
Mountain Moden Home
Custom Home Eagle
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Additions & ADU’s

Smart, Seamless Additions and ADUs Tailored to Fit Your Life

Additions & ADU’s Idaho: Expanding Your Home with Style and Purpose

At Abstract RD+B, we believe that a home should grow with you. Whether you're dreaming of a spacious kitchen, an extra bedroom, a private home office, or an income-generating accessory dwelling unit (ADU), our Additions & ADU’s Idaho services are designed to bring flexibility and function to your existing space—without the stress of relocation.We specialize in seamless, architecturally cohesive additions that enhance both the flow and value of your home. Our team handles everything from design to build, ensuring every new square foot looks and feels like it was always meant to be there.

Design a perfect home

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Make Room for What Matters

Whether your family is growing, your lifestyle is evolving, or you just need more breathing room—our home additions bring fresh space and function without the stress of moving. We design with purpose and build with precision.

ADUs Designed for Comfort and Flexibility

From backyard cottages to in-law suites, our Accessory Dwelling Units (ADUs) are thoughtfully designed to maximize your property’s potential. Perfect for guests, rentals, or multigenerational living—with all the quality and style of a full home.

  • Brad is top notch. Great communicator, attention to details. His company even sponsored our Recreational Flag Football team. He's active with the community and an inspiration. His calm demeanor and easy going, which will put you right at ease. He's even pretty witty and great to talk too. I would highly recommend him for any and all your design and construction needs.

    Nathaniel Felipe

  • Brad with Abstract Residential Design + Build has been great to work with, he always communicates before the job starts and as it progresses. His jobs are organized and always ready when I show up. I would highly recommend him for anyone looking to build or remodel their home.

    Lucas Rushin

  • Great people! They care more about doing what’s best for people than just making money. I asked them to modify and finish up some plans I’d started with another draftsman a few years back. He spent time with me, gave me valuable feedback suggestions and then told me as much as he would love to help, it would be best for me to use the original draftsman and explained all of the reasons why. Class act. Appreciate the integrity.

    Whitney Anderson

Expand Your Living Space Without Compromise

More Space, More Possibility — Without the Hassle

At Abstract RD+B, we treat every addition and ADU like a custom home—because it deserves that level of care. Whether you're building out a new master suite, adding a home office, or creating a standalone unit, we take the time to understand how the space needs to work for you. With our streamlined design + build process, you’ll enjoy expert guidance, creative solutions, and clear communication from start to finish. We handle the complexity—zoning, permits, structural integrity—so you can focus on how the new space will enhance your life. Beautifully designed. Thoughtfully built. Seamlessly integrated.

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Let’s bring your vision to life with a seamless, stress-free process designed around you. Contact us today to get started.

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