Last Updated October 22, 2026
Does Lamont Bros. build ADUs in Portland?
Yes. Lamont Bros. designs and builds accessory dwelling units in Portland, from feasibility through permits and construction.
Lamont Bros. starts by confirming what your lot allows under zoning, setbacks, and size rules, so you know what's realistic before design begins. Utility planning, including whether to add separate metering for a rental, is part of the design phase. ADUs with Lamont Bros. typically start around $150,000.
Learn more about ADU design and construction.
Ready to learn more?
Calculate the cost of your remodel with one of our cost calculators or schedule a consultation with a member of our team to have your questions answered and start your remodel with confidence.