BB Builders Pro specializes in ADU construction, garage conversions, home additions, and detached backyard cottages. Services include custom design, permitting, zoning compliance, and renovations—ideal for rental income or family housing.

BB Builders Pro – ADU Contractor in Renton, WA

About BB Builders Pro

BB Builders Pro: ADU Construction and Home Expansion Services

BB Builders Pro is a construction company specializing in Accessory Dwelling Units (ADUs), Detached ADUs (D-ADUs), and home extensions. Their services are designed for property owners looking to add living space, generate rental income, or accommodate family members on their existing property.

The company works on a range of project types, including standalone backyard cottages, attached ADUs, garage conversions, and full home additions. Each project is approached with attention to the specific needs, budget, and goals of the property owner.

Services Offered by BB Builders Pro

BB Builders Pro covers multiple aspects of ADU and home expansion construction. Their service offerings include:

  1. Detached ADU construction: Building a fully functional, standalone living unit in the backyard — suitable for rental use, guest accommodations, or housing aging parents.
  2. Attached ADUs and garage conversions: Expanding an existing home by adding an attached accessory dwelling unit, converting a garage, or repurposing underutilized interior space into a livable area.
  3. Home additions: Designing and building custom expansions such as additional bedrooms, bathrooms, or second-story additions.
  4. ADU renovations and upgrades: Updating existing ADUs or home extensions with modern finishes, interior improvements, and energy-efficient enhancements.
  5. Custom design and layout planning: Working with clients to develop personalized floor plans that align with their vision and practical requirements.
  6. Permitting and zoning compliance: Managing all permit applications, zoning approvals, and municipal requirements throughout the project.

The Construction Process

BB Builders Pro follows a structured process from initial consultation through to project completion. It begins with a property assessment and goal-setting conversation, where the team evaluates the site and discusses the most suitable ADU or expansion options.

From there, their architects develop detailed blueprints and 3D models, giving clients a clear picture of the planned space before any construction begins. Once designs are finalized, the team handles all permitting and regulatory compliance, removing that burden from the property owner.

Construction is then carried out by their building team, with a focus on quality workmanship and minimizing disruption to the existing property. Upon completion, a thorough inspection and walkthrough is conducted to confirm that the finished space meets safety and quality standards.

For property owners considering a backyard cottage, granny flat, in-law suite, or any other form of accessory dwelling unit, BB Builders Pro offers an end-to-end service that covers design, permitting, and construction under one roof.

Services

BB Builders Pro performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Feasibility & Site Assessment
  • Finishing & Fit-out
  • 3D renderings & floor plans

BB Builders Pro Reviews

Aaron Ramirez

2025-12-03
"We recently completed a master bathroom remodel with the BB Builders Pro team, and we cannot recommend them enough! This is one of the best experiences my wife and I have had with a General Contractor. Our Project Manager, Ron, was very communicative, on-site frequently, and checked in with us even on weekends to make sure we were on the same page and had all the materials to complete the work. His team lead, Bogdan, worked in a very similar way, and checked in with us when he and the team had any questions during the construction process. They completed the work well within the timeline, and did so even with a mid-work change in the wall tile that led to a stop in work for a few days. They did an AMAZING job on our master bathroom and made it exactly how we envisioned. We are having them come back to remodel our guest bathrooms very soon too. If you have a house project that you want professionally done, please reach out to Ron and BB-Builders Pro to have it done right."

Thao Hoang

2025-11-03
"Ron and the crew at BB-Builders renovated our 2 bathrooms after we suffered flooding in our basement. They greatly eased our anxiety with clear communication and construction plans, and worked around our budget constraints without compromising the quality or timeline. Highly recommend."

Ia P

2025-10-21
"BB Builders was one of the best moves we made for this project! Noah helped us reimagine the whole layout and design, from picking materials and appliances to choosing colors and textures. The entire experience was smooth, the crew was super responsive, and everything got done efficiently. Big thanks to the team for turning our house into the home we always dreamed of!"

Barbara Shaw

2025-10-20
"I enlisted the services of BB-Builders Pro to replace our backyard deck and landscape. Ron and his Team worked with me to create the ideal design, managing the work, meeting the anticipated timelines, and created a beautiful environment for our backyard. I am extremely impressed by the professionalism and follow-up of BB-Builders Pro and the results of their efforts. I would not hesitate to hire them again!"

kathy Deyoe

2025-10-13
"BB Builders pro are great, !! My first big project for my home and I was searching for reliable honest company! So glad I found them! Noah the project manager is amazing! i think I have asked him every question you can think of but hes so patient and understanding of your needs,and knowlegeable of what you want and how to achieve it for you, ,he explained the whole process with me at my home,went over every detail, helped me set up my account online, was not hesitant the answer any questions I had right away, he ordered everything for me and had it shipped to my home and everything went very smoothly, he was contacting me all the time checking up on making sure everything was going smoothly with his workers and they did an amazing awesome job on my shower coversion,and installing my new vanity, i am so pleased with their work.And how professional they are now, they take care of you that I am having them.Do a second project for me ! Thank you Noah for everything "

Specifics

Eco-Friendly

Opening hours

Monday 8:00AM - 10:00PM
Tuesday 8:00AM - 10:00PM
Wednesday 8:00AM - 10:00PM
Thursday 8:00AM - 10:00PM
Friday 8:00AM - 10:00PM
Saturday 8:00AM - 10:00PM
Sunday 8:00AM - 10:00PM

Location

Did we help?

Please let BB Builders Pro know that you found them on Top ADU Pros to allow us to continue helping others find the best adu contractors.

get in contact