We deliver ADU construction with planning for zoning, utilities, and permit sequencing. This service is designed to reduce surprises by confirming feasibility and constraints before build commitments.
“Thomas and his team completely transformed our home. The craftsmanship is exceptional.”
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Our ADU Approach
Portland ADU projects run into zoning setbacks, utility capacity limits, and permit sequencing issues that surface after money is spent. We confirm lot coverage, system connection points, and required variances before design work starts.
You get a clear picture of what your property supports, what permits are needed, and what the realistic timeline looks like before any construction commitment.
We define viable ADU paths for your property and identify early constraints that affect cost and timeline.
Required permit and utility considerations are addressed before construction mobilization.
We manage construction phases, inspection milestones, and final turnover for occupancy readiness.
Portland ADU Construction
N Portland
Garage relocation with new foundation and site improvements tied to lot subdivision. Permit-managed scope with fencing and grading.
N Portland
Renovation and site work including interior updates, land development coordination, and multi-trade permit management.
SE Portland
Land subdivision with home renovation, permitting coordination, and exterior site improvements.
Our Guarantee
We stand behind our work. Every H&C project includes a written one-year workmanship warranty backed by our Oregon contractor bond and insurance.
Every joint, cut, and connection we make is backed for 12 months from substantial completion. If our work fails, we fix it at no cost to you.
You receive a signed warranty document at closeout. No verbal promises. No fine-print surprises. The scope is clear before you sign off.
Report a defect in writing or by email within 30 days of discovery. We schedule an inspection, confirm the issue, and handle the repair.
Project Financing
H&C Design-Build now offers financing options through U.S. Bank Avvance. If you are evaluating a remodel, you can review pre-approval options before final scope decisions are locked.
Financing is offered through U.S. Bank
Common Questions
Check before committing to design. Zoning setbacks, lot coverage limits, and utility capacity can rule out certain ADU types or change your budget significantly.
Yes. We coordinate feasibility, permits, and construction under one project path so permit conditions carry directly into the build scope.
Permitting takes 3 to 6 months depending on review complexity. Construction runs 4 to 8 months after permits are issued. Total timeline is typically 8 to 14 months.
System development charges apply to new ADU construction. Portland SDC fees vary by unit size and utility connections. Current fee schedules are available through Portland Permitting and Development.
Portland allows ADUs on most residential lots regardless of size. Setbacks, lot coverage, and height limits vary by zone and determine what you can build.
Yes, if your lot meets setback and coverage requirements. Detached ADUs also need utility connection points, site access for construction, and adequate drainage.
From Our Crew
Portland remodeling is what we do every day. These guides cover the real decisions homeowners face: permits, costs, materials, and trade coordination.
All guides
Portland garage to ADU conversion guide. 2026 zoning regulations, permit requirements, realistic costs, and what contractors check first.
Read guide
Portland permit requirements explained by a contractor. What work needs a permit, what is exempt, and why skipping permits costs more long-term.
Read guide