Adu/In-Law Suite Houses In Marion County, Oregon

Select Your Build Location To View Pricing.

Select Your Build Location To View Pricing

Showing all 14 results



Square Footage





Square Footage


Product categories

Unlock your property’s full potential with Accessory Dwelling Units (ADUs), also known as mother-in-law suites, accessory apartments, granny flats, carriage houses, or backyard cottages. These cost-effective solutions provide ample living space and enhance your overall living experience. 

And the best part? True Built Home is here to help you make the most of your property and create your dream home with ease!

Shop Affordable ADU Houses for Sale in Marion County, Oregon

Whether you seek to add an Accessory Dwelling Unit (ADU) for additional space or as a primary residence, True Built Home is here to assist you. Our company offers 14 diverse and functional ADU home plans and designs to accommodate your individual needs and preferences.

Marion County, Oregon ADU Home Plans for Attached ADU, Detached ADU, In-Law Suites, & More

Transform your property with the power of an Accessory Dwelling Unit from True Built Home. With a wide variety of options, you’ll find the ADU design of your dreams right here. Whether you’re looking for a two-car garage, a one-car garage, or no garage, we’ve got you covered. Our floor plans range from 495 to 1,199 square feet, offering ample space to fit your lifestyle. With options for one to three bedrooms and one to two bathrooms, you’ll have everything you need right at your fingertips.

The True Built Home Difference

At True Built Home, we pride ourselves on our transparent and unbeatable pricing model! Unlike other home builders who may only showcase models with added upgrades and present a base unit price, we provide you with a comprehensive and transparent cost for building your dream ADU home, from the foundation to its stunning finish.

Award-Winning Marion County, Oregon Home Builders with an In-House Design Team 

Experience the ultimate in design convenience with True Built Home! Say goodbye to the hassle and expense of hiring an architect or designer. Our award-winning local builders are unmatched in their expertise, ensuring that every aspect of your home is expertly crafted to your satisfaction. You won’t have to break the bank to get ADU houses in Marion County, Oregon. 

All ADU Plans & ADU Homes Come with High-Quality Premium Features Included – No Additional Costs

Upgrade your expectations with True Built Home! We believe that premium features should be a standard, not a luxury. That’s why, with every ADU floor plan, you’ll enjoy high-quality premium features without extra costs.

Customizable & Energy-Efficient ADU Home Plans 

Discover a home that truly embodies your unique style and personality with True Built Home. Your home should reflect who you are, so we offer complete customization options for all of our ADU floor plans.

Enhanced Communication Platform to stay in touch throughout your project

Our award-winning communication platform is the key to ensuring you stay informed and in control throughout the entire building process. With 24/7 access to your project details, documents, answers to your questions, and more, you’ll always be in the know and able to easily manage all aspects of your new ADU home in Marion County, Oregon. 

Proudly Serving Marion County, Oregon

True Built Home, a local ADU home builder, is proud to serve the Marion County, Oregon area by constructing homes on your land.