Conrad Construction is Portland's trusted ADU builder with 20+ years of experience. Specializing in backyard cottages, garage conversions, granny flats & detached ADUs, they handle permits, design & construction to boost property value.

Conrad Construction LLC, Portland, OR

About Conrad Construction LLC

Conrad Construction: Portland's Trusted ADU Builder

Conrad Construction has built a strong reputation over more than two decades as one of the Portland area's most trusted home building and remodeling teams. As an experienced ADU contractor and custom home builder, they bring a unique combination of skills to every project. Their team of professionals — from architects to contractors — works together to deliver exceptional quality at a competitive price. Their deep expertise in both new construction and remodeling makes them exceptionally well-positioned to handle any accessory dwelling unit builder project from start to finish.

Their process begins with a close collaboration with each client to fully understand the vision, needs, and budget for the project. Conrad Construction is committed to using the latest building materials, techniques, and trends to create results that are both beautiful and built to last. Beyond construction, they also offer support services including warranty programs, quality-control inspections, and maintenance plans — ensuring clients enjoy their investment for years to come.

What Is an Accessory Dwelling Unit (ADU)?

An accessory dwelling unit (ADU) is a self-contained living space added to an existing residential property. These units come in many forms, including backyard cottages, granny flats, guest houses, garage conversions, and apartment additions. They can serve a wide variety of purposes:

  1. Supplementary housing for family members or in-law suites
  2. Long-term or short-term rental income
  3. Private guest accommodations
  4. Additional living or office space for the homeowner

ADUs can be attached to the main residence or completely detached, allowing for separate access and utilities. Because ADUs are subject to local permitting and regulation, it is essential to work with a knowledgeable ADU builder in Portland who understands the local requirements and can ensure all necessary permits and approvals are secured before construction begins.

Conrad Construction's team is well-versed in Portland's local regulations, making the permitting process smooth and efficient for their clients. Whether it's a garage conversion contractor project or a brand-new detached ADU, they handle the complexities so homeowners don't have to.

The Benefits of Building an ADU on Your Property

There are numerous advantages to adding an accessory dwelling unit to your property. Some of the most notable benefits include:

  1. Increased Property Value: Building an ADU increases the usable square footage of your property, which directly boosts its market value and can make future resale more attractive.
  2. Additional Income Potential: Renting out an ADU — whether through short-term platforms or long-term leases — can provide a meaningful secondary income stream.
  3. Privacy and Comfort: A separate living space allows homeowners to accommodate guests or extended family without disrupting their own personal space.
  4. More Livable Space: Whether it's a Casita, an in-law suite, or a backyard cottage, an ADU provides flexible space that can adapt to a family's changing needs.
  5. Separate Living for Family Members: Larger families benefit from having distinct, private spaces while remaining close to one another.

Conrad Construction works with each client's existing property and space to design and build the ideal ADU solution. From granny flat builders services to full garage conversion contractor work, their team tailors every project to the homeowner's lifestyle and goals.

Their refined four-step process — consultation, design and permitting, construction, and final review — ensures every ADU project is completed on time, within budget, and to the highest standards of craftsmanship. Over 20 years of local experience, combined with long-standing relationships with local subcontractors and suppliers, allows Conrad Construction to negotiate the best value for their clients while reinvesting in the Portland community they call home.

Services

Conrad Construction LLC performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Maintenance contracts

Conrad Construction LLC Reviews

Kent Grether

2026-02-11
"Conrad was an excellent choice for our modest kitchen remodel job. They get high marks for communication, timeliness, courtesyfriendliness, quality of work, fair pricing, and clean-up. We particularly appreciated Rob who did the majority of the work. Based on our experience, we would use them again and recommend them to friends."

Loren Horton

2025-11-19
"We are very happy with the lightingremodeling project on our home. Quality of the work was excellent. Process of the work was completed on schedule. Communication by entire staff was excellent. Highly recommend."

Christine Thelen

2025-11-09
"I repeated say that if you like your contractor when you are done with a big renovation project, they probably were a good contractor. Robby at Conrad construction was fabulous at responding to the inevitable issues that arise. The whole team was reliable, responsive, took accountability when appropriate, and cared as much as I did about the quality of the work. I will use them again on any future renovations."

Josh Lighthipe

2025-10-29
"We had a water leak flood throughout the Kitchen, dining room and finished basement. Conrad Construction and their inhouse designer helped us take a someday project always wanted to redo the kitchen and refinish the floors and make it fairly painless through their thoughtful process of design and construction. Turned out amazing! Custom cabinets and new appliances that fit well in our galley kitchen. The refinished 1922 hardwood floors look great and the finished basement repairs are better than we had before. Also helped us maximize the insurance payout by making a second "flood damaged only bid" for the insurance company since what we wanted to do went well beyond the flood damaged areas."

Jennifer K

2025-05-21
"Patrick and his team do great work. And if there's a concern, it's addressed. Workers are punctual and clean up after themselves at the end of the day. But what I like most, and why I would reach out to Patrick for future projects, is that I trust him. I feel like I can take him at his word; he is reasonable and honest. He is responsive and is patient with questions. If a friend asked me if I would recommend a company to help remodel their home, I would recommend Conrad Construction."

Specifics

Opening hours

Monday 8:00AM - 4:00PM
Tuesday 8:00AM - 4:00PM
Wednesday 8:00AM - 4:00PM
Thursday 8:00AM - 4:00PM
Friday 8:00AM - 4:00PM
Saturday -
Sunday -

Location

Did we help?

Please let Conrad Construction LLC know that you found them on Top ADU Pros to allow us to continue helping others find the best adu professionals.

get in contact