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An Accessory Dwelling Unit (ADU) gives your home new possibilities — whether you’re creating a private space for family, a long-term solution for multi-generational living, or an income-generating rental. At Kraft Custom Construction, we specialize in designing and building ADUs that are thoughtfully integrated with your property and tailored to your needs.

Since 1982, Willamette Valley, OR homeowners have trusted our team for projects that combine design expertise, careful planning, and long-lasting craftsmanship. With our guidance, your ADU will feel less like an add-on and more like a natural extension of your home.

Our ADU services include:

  • Detached ADUs (backyard cottages, tiny homes)
  • Integrated ADUs and basement/attic conversions
  • Above-garage ADUs
  • Multi-generational living spaces
  • Income-generating rental units
  • Accessibility-focused ADUs for aging in place

Building an ADU is an opportunity to rethink how your property supports your lifestyle. We focus on practical design, clear guidance, and long-term function so you can make informed decisions at every step. Whether your vision is clear or still taking shape, we help you understand your options and create an ADU that truly enhances your home.

Why Build an ADU?

ADUs are one of the most versatile home projects available — blending practicality, value, and lifestyle flexibility.

Expand Living Options

  • Create independent living space for aging parents or grown children
  • Offer privacy and comfort for guests or extended family
  • Support multi-generational households

Future-Proof Your Home

  • Add flexibility to adapt to changing life stages and needs
  • Incorporate universal design features that allow accessible living for all
  • Increase square footage without buying a new home

Generate Rental Income

  • Use your ADU as a long-term rental or short-term vacation unit
  • Offset mortgage payments with an income-generating space
  • Increase property appeal for future buyers

Our ADU Design-Build Process

Building an ADU involves unique challenges — from zoning and permits to utility integration. With Kraft Custom Construction, you have a partner who understands the details and navigates the process with you.

Our process includes:

  1. Meet – Discuss your vision, goals, and intended use of the ADU
  2. Exploration – Assess your property, zoning requirements, and project investment costs
  3. Design – Develop detailed plans, layouts, and material selections
  4. Walk-Through – Review site conditions with trade partners for accurate pricing
  5. Proposal – Present a detailed, fixed-priced construction agreement and final plans
  6. Pre-Construction – Secure permits, order materials, and finalize schedules
  7. Construction – Build your ADU with expert craftsmanship and clear expectations
  8. Post-Construction – Final walkthrough, professional cleaning, and warranty-backed work

Communication and trust are the foundation of any successful relationship. Not only does the Kraft team provide the exceptional craftsmanship and design-build services homeowners are looking for, they are valued partners families welcome into their homes.

The Kraft Custom Construction Difference

ADUs require a contractor who is detail-oriented, experienced with complex permitting, and committed to seamless construction. For more than 40 years, Kraft Custom Construction has been delivering trusted, high-quality ADU projects for Willamette Valley homeowners.

Why choose Kraft for your ADU?

  • Licensed, insured, and family-owned since 1982
  • Woman-led, multi-generational design-build expertise
  • In-depth experience navigating zoning and permitting requirements
  • Transparent communication and honest pricing
  • Expertise in both modern and historic home integration
  • Trusted by repeat clients and multiple generations of families

Free eBook: What it's like to remodel with Kraft

A Guide to Thoughtful Design, Trusted Craftsmanship, and a Home You’ll Love Living In

Trusted by Homeowners Like You

From thoughtful design to skilled craftsmanship, our clients consistently share the difference our approach makes. Browse their reviews below.

Responsive, Respectful, and On Time—A Team We Trust
Emma, Roger, Ted and their team remodeled our living space and replaced floors throughout our home. They listened to our goals and concerns and made the effort to allow us to remain in the space throughout the project with as little disruption as possible. We appreciate their support with our needs during the project, as well as how responsive...
Jennifer M.
Exceptional Craftsmanship and Communication from Start to Finish
We hired Kraft to build a full bathroom in our basement of our 1941 home--and this was the best decision we could have made for the project. From the initial phone consultation, it was clear that Kraft not only cared deeply about our vision for our home, but also the natural concerns surrounding a renovation. They took the time to communicate...
Casey G.
Thoughtful Design, Expert Project Management, and a Stunning New Kitchen
Kraft Custom Construction completed our kitchen remodel in early 2025 and did a great job - we particularly appreciated the transparency of the bidding process and their competence/attention to detail. We also appreciated the high quality materials and design, addition of an island, more usable storage,and ample counter space for cooking and...
John B.
Outstanding Service, Pristine Work, and an Experience Above Expectations
I recently hired Kraft Custom Construction to repair/replace some exterior trim and install a new bay window. The experience was outstanding from start to finish! Communication was clear, every question was answered promptly, and I was kept in the loop on scheduling and progress at every stage. The crew arrived on time, treated my home and pets...
Molly B.
A Whole-Home Remodel Delivered with Precision—and Heart
Kraft Custom Construction (KCC) was seleced over other contractors as KCC demonstarted they had the processes in place to control schedules and costs. KCC finshed our whole house remodel ahead of schedule, within the budget and provided a high quality product. The Monday morning email with the week's planned activities was fantastic.What really...
Bill R.
A Bathroom Remodel Completed On Time, On Budget, and Beyond Expectation
Kraft was the best contractor who has done work on my house. Emma and Katrina are so knowledgeable, clear communicators who work to ensure that the job is done well, on time, and to your specifications. The planning process was so smooth. We remodeled a bathroom and added a bathroom. The job was done on time and on budget and the house was left...
Anne W.
Quality Materials, Skilled Repairs, and a Pergola We Finally Love
We recently had our pergola replaced but unfortunately the company we hired left us with a complete mess of a job. The large columns, which are really the focus point were re-created using flimsy boards which apparently weren't attached properly and within a couple of weeks the boards and panels were coming apart. We called Kraft and worked with...
Natalie M.
Exceptional Communication and Craftsmanship from a Seasoned Homeowner’s Perspectiv
Having built 3 houses and remodeled 5 or 6, clear communication and prompt follow up are key to a successful project. Kraft demonstrated these qualities right from the start. During the project they were careful to protect the rest of the condo from dust and dirt (while working on the kitchen). Their subs were all professional and on time. The...
Howard D.
Trusted Craftsmanship for Our Century-Old Home
Having a hundred-year-old house sometimes requires special attention. Kraft has done excellent work on two projects for us over the years. Their results are top-notch and likely to last another hundred years. The crews are great problem-solvers, hard-working, and good communicators if they find complications. If you want the job done right, they...
Gary B.
A Collaborative Process with Outstanding Results
Kraft Custom Construction Inc. is the epitome of a great, professional construction contractor. Their team works with their client to determine what the client wants and works diligently to assure those desires are met. I loved being heard, and having results that exceeded my expectations.
Judy B.
Kraft Followed Through—and Then Went Above and Beyond
A reliable and honest company, staffed by friendly and competent people. I did a minor kitchen remodel with Kraft Custom Construction and they delivered exactly what they said they would, in exactly the budget we agreed on and even finished a little early. Their follow through was also very good as they returned a week later to modify a cabinet...
Louis G.
The Real Deal: A Team as Invested in Your Home as You Are
Kraft Custom Construction is the real deal! Their legacy of craftsmanship speaks volumes, and it’s clear they value homeowners like family. From start to finish, their excellent work and attention to detail shine through. If you want a team that cares about your project as much as you do, Kraft Custom Construction is the way to go!
Hayden M.

Hearing directly from our clients gives you a sense of what it’s like to work with us — the communication, the craftsmanship, and the care we bring to every project. Now, as you continue exploring, take a look at some of the ADUs we’ve built. Each portfolio piece highlights how thoughtful design and expert construction can turn possibilities into finished spaces that enrich daily living.

See Our Work


From basement conversions in Portland to detached backyard cottages in Salem, we’ve created ADUs that meet homeowners’ unique goals while complementing their property’s character.

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Sellwood-Moreland Basement Remodel

In this Sellwood Portland home, the basement was thoughtfully remodeled to create a fully livable accessory dwelling unit for a growing family. A reconfigured layout, new bathroom, and added egress window transformed the lower level into comfortable space for guests, work, and everyday living. 

How can an underused basement become a thoughtfully designed living space?

Explore this Sellwood-Moreland Basement Remodel

1-carriage-house-conversion-1

Carriage House Conversion

This historic outbuilding was thoughtfully converted into a fully functional accessory dwelling unit. Updated systems, a carefully planned layout, and refined finishes transform the space into comfortable living quarters that complement the main home. 

How can a historic outbuilding be reimagined as a modern living space? 

Explore this Carriage House Conversion

4-Mid-Century-Modern-Remodel

Mid-Century Modern Remodel

In this mid-century home, the remodel included a rear studio addition designed to expand the home’s usable space while maintaining its clean architectural character. Thoughtful planning and natural materials helped integrate the new structure seamlessly with the existing home and landscape. 

How can an addition expand a home’s possibilities while staying true to its original design? 

Explore this Mid-Century Modern Remodel

ADU Frequently Asked Questions

 

How long does it take to build an ADU?

ADU construction timelines typically range from 4–7 months, depending on the type (detached or integrated into existing structure). The permitting and design process occurs beforehand.

Do I need a permit to build an ADU?

Yes. ADUs require permits, zoning approval, and utility planning. Our team manages the entire permitting process to keep your project on track.

What is the cost of an ADU in Salem and Portland, OR?

Costs vary widely depending on size, finishes, and whether it’s a new structure or a conversion. Many ADUs start around $200,000 and can exceed $350,000. We provide accurate budget ranges during our exploration phase.

Can my ADU be used as a rental?

Yes. Many homeowners use ADUs for long-term rentals or Airbnb-style short-term rentals. We help design spaces that meet code requirements while maximizing functionality and appeal.

Will an ADU increase my property value?

Absolutely. ADUs add square footage, rental potential, and flexibility, making your property more attractive to future buyers.

Ready to Build Your ADU?

With Kraft Custom Construction, your ADU project will be handled with care, precision, and creativity. Whether you’re planning for family, income, or future flexibility, we’ll help you create a space that truly works for your life.

 

Complete the form below to request a call about creating your ADU.