Custom ADUs for Multigenerational Living
More options for the years ahead.
Use the land and resources you have now to create more choices for the people you love. We help Bellingham and Whatcom County families consider both an immediate housing need and what they hope to leave for the next generation.
One home. Different chapters of family life.
Build for the person who needs a home now, without losing sight of who may need it next. A backyard ADU could welcome a parent today and give an adult child a place of their own in the years ahead.
Meet Today’s Need
Give a parent or adult child their own kitchen, bathroom, and space to settle in. You can share everyday life without sharing every room—or buying another property.
Keep Tomorrow Open
Consider access, room layouts, storage, and privacy before you build. Thoughtful choices now can help the same ADU serve another family member later, within your property’s limits and local requirements.
The OSHN Approach
Decide what matters most.
You don’t need to predict every future change. We help you distinguish essential needs from possibilities, then weigh those choices against the site, scope, and budget.
✓ Listening
A thoughtful home starts with listening.
✓ Clear Communication
Clear guidance, from planning and permitting through construction.
✓ Quality
Careful craftsmanship. Beautiful, functional spaces built to last.
Questions about planning ahead
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It depends on the property, location, access, utilities, and applicable local requirements. A 20-minute consultation is a good place to share your goals and learn what the next step may be.
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Every project is different. Size, design, site conditions, utilities, finishes, and permitting requirements can all affect the investment. We’ll talk about your goals and budget expectations as part of the process.
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Timelines depend on the property, design decisions, permitting, and construction scope. We’ll work to set realistic expectations as your project takes shape.
Build on what you have. Leave more possibilities.
What could this property mean to your grandchildren?
The home you build for one family member today could serve another generation tomorrow. An ADU is a chance to turn existing land and resources into lasting housing options, and potentially contribute to generational wealth. Start with the people who need space now, while considering the legacy you want to leave. We’ll help you explore the building possibilities; ownership and estate planning belong with your legal and financial advisers.