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Portland ADU construction by H&C Design-Build

Portland ADU Construction

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.

Craftsman Warranty Financing Available

“Thomas and his team completely transformed our home. The craftsmanship is exceptional.”

Sarah & Mark J. NW Portland

Our ADU Approach

Feasibility confirmed before ground breaks.

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.

ADU Feasibility Review
1
Stage 01

ADU Feasibility Review

We define viable ADU paths for your property and identify early constraints that affect cost and timeline.

  • 1 Zoning setbacks, lot coverage, and height limits checked against current code
  • 2 Utility capacity and connection points evaluated for water, sewer, and electrical
  • 3 Site access, grading, and foundation options assessed before design proceeds
Permits and Technical Coordination
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Stage 02

Permits and Technical Coordination

Required permit and utility considerations are addressed before construction mobilization.

  • 1 Permit applications filed with Portland BDS in correct sequence
  • 2 Utility coordination scheduled so connections align with construction phases
  • 3 Any required variances or adjustments documented and submitted early
Construction and Inspection Closeout
3
Stage 03

Construction and Inspection Closeout

We manage construction phases, inspection milestones, and final turnover for occupancy readiness.

  • 1 Foundation, framing, and mechanical systems built to inspection-ready standards
  • 2 Trade scheduling coordinated so inspections pass without rework
  • 3 Final occupancy walkthrough and utility activation completed before handoff

Portland ADU Construction

Recent ADU and Site Projects

1 / 2
N Wall remodel
Lot Subdivision + Garage

N Wall

N Portland

Garage relocation with new foundation and site improvements tied to lot subdivision. Permit-managed scope with fencing and grading.

View Project

Project Financing

Finance your project without delaying the work.

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.

  • Apply before design and permit decisions are finalized
  • Get pre-approval visibility before you commit to full scope
  • Keep kitchen, bath, structural, and exterior work on one timeline
Discuss financing options Call (971) 409-5926

Financing is offered through U.S. Bank

U.S. Bank Avvance financing pre-approval banner (gray version, cropped)

Our Guarantee

1-Year Craftsman Warranty

We stand behind our work. Every H&C project includes a written one-year workmanship warranty backed by our Oregon contractor bond and insurance.

Full-Year Workmanship Coverage

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.

Written Warranty on Every Project

You receive a signed warranty document at closeout. No verbal promises. No fine-print surprises. The scope is clear before you sign off.

Responsive Claim Process

Report a defect in writing or by email within 30 days of discovery. We schedule an inspection, confirm the issue, and handle the repair.

What the Warranty Covers

  • Covers all workmanship performed by our crews under the original contract scope
  • Repair or replacement at our discretion for valid claims
  • Does not cover owner-supplied materials, normal wear, or unauthorized modifications
  • Manufacturer warranties on products and materials remain separate and are passed through to you
  • Oregon CCB dispute resolution available if any disagreement arises
OR CCB #251405 Licensed · Bonded · Insured in Oregon

From Our Crew

We write about
what we build.

Portland remodeling is what we do every day. These guides cover the real decisions homeowners face: permits, costs, materials, and trade coordination.

All guides
Feb 2026 9 min read

Portland Garage to ADU Conversion: Costs, Codes, Permits

Portland garage to ADU conversion guide. 2026 zoning regulations, permit requirements, realistic costs, and what contractors check first.

Read guide
Jan 2026 8 min read

Portland Building Permits: What You Need and What It Costs

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