Remodeling
Bonus
Space

ADU Construction

Careful planning, clean execution, and finish details that fit the way you live — so that empty corner of your lot turns into rental income, a guest suite, or the in-law apartment that keeps everyone happily at arm's length.

Licensed Insured OR & WA Free Estimates

Professional ADU Construction in Portland

Add living space and value with an Accessory Dwelling Unit. We design and build attached, detached, and basement ADUs that complement your property.

  • Attached ADU construction
  • Detached ADU building
  • Basement ADU conversions
  • Permit navigation and compliance
  • Full design services
  • Utility connections and systems

A Second Home, Built to Code the First Time

ADUs live at the intersection of zoning rules, permitting, and full residential construction — get any one of those wrong and the project stalls or gets red-tagged. We handle the permitting and code compliance alongside the actual building, so you're not left guessing whether your new unit is legal to rent or move family into once it's finished.

One Point of Contact

A single project manager handles permitting, design, and construction from start to finish.

Skilled, Vetted Crews

Full residential construction handled by tradespeople we trust with our own homes.

Clear Scopes & Pricing

A detailed scope and price before work starts, so change orders are the exception, not the rule.

Local & Licensed

Portland-based, licensed in Oregon and Washington, and current on local ADU zoning rules.

Our ADU Construction Process

From permits to a finished unit, here's how an ADU comes together.

1

Feasibility & Design

We assess your lot, zoning, and goals to design a unit that fits.

2

Permitting

We prepare and submit plans to secure the permits needed to build.

3

Detailed Proposal

A clear scope of work and firm pricing before construction begins.

4

Foundation & Framing

Site work, foundation, and framing bring the structure to life.

5

Systems & Finish Work

Plumbing, electrical, and finish work turn framing into a livable space.

6

Final Inspection & Walkthrough

We coordinate final inspections and walk the finished unit with you.

ADU Construction Near You

We provide ADU construction services across the Portland metro area and nearby Southwest Washington communities.

Ready to Get Started?

Contact LCR PDX for professional ADU construction service from a licensed, insured team.