Adu Company in Portland, OR | AccessoryDwellingUnit Direct

Looking for adu company in Portland, OR? Call AccessoryDwellingUnit Direct for a contact a provider — no obligation. Licensed adu builders serve Portland and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.

About this service

A professional ADU company manages the entire project lifecycle, from initial design and permit filings to the final structural inspection. We act as your project partner, ensuring that your vision meets all legal requirements while avoiding common pitfalls in construction. You need a team that handles the heavy lifting so you can focus on how you will use the space. We provide the expertise to get your project across the finish line. Exact pricing confirmed free on the call.

Frequently asked in Portland

What are the disadvantages of ADUs in Oregon?

How much does an ADU cost in Oregon?

What are the rules for ADUs in California?

California has enacted comprehensive ADU laws aimed at increasing housing availability. These state-level regulations often streamline the approval process and set minimum standards for ADUs, limiting local governments' ability to impose overly restrictive rules. Always check the latest California state and local ordinances for the most current information.

Is an ADU allowed in Maryland?

The legality and regulations for ADUs in Maryland can differ significantly depending on the specific county or municipality. Some areas have adopted welcoming ADU ordinances, while others may have more specific limitations on size, placement, or owner occupancy. It's vital to research the local zoning laws for your Maryland property.

What are the rules for ADU in California?

California's ADU regulations are largely driven by state law, which aims to simplify ADU development. These laws often mandate certain allowances regarding setbacks, unit size, and owner-occupancy. While local jurisdictions can add some requirements, they are generally restricted from prohibiting ADUs outright.

These programs often target specific income brackets or types of ADUs and are designed to make ADUs more accessible. Keep an eye on current state funding opportunities if you're in California.

Also serving nearby: Vancouver · Beaverton · Gresham · Hillsboro · Salem

All cities in Oregon →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

630,498residents

4,723per sq mile

8ZIP codes served

Serving all of Portland — population 630,498; about 4,723 residents per square mile across 133.5 sq mi. ZIP codes covered include 97201, 97202, 97203, 97204, 97205, 97206, 97207, 97208.

Neighborhoods served in Portland: Pearl District, Hawthorne, Alberta Arts District, Laurelhurst, Sellwood-Moreland — and every surrounding area.