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State Design & Engineering

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    #1 ADU Builder In Walnut Creek, CA

    Golden State ADU's California ADU Builder in Walnut Creek, CA

    Experience top-quality craftsmanship and exceptional service for a rejuvenating and luxurious secondary home. Contact us today!

    Golden State ADU's rated 4.9/5
    based on 5000 reviews.

    Why Choose an ADU?

    ADUs, also known as granny flats, backyard cottages, or guest houses, offer versatile solutions to enhance your property. Here’s why adding an ADU might be the right move for you:

    • Additional Living Space: Perfect for accommodating relatives or providing a separate area for guests.
    • Rental Income: Renting out your ADU can create a steady revenue stream and increase your property’s value.
    • Flexible Use: Use your ADU as a home office, creative studio, or for other purposes that suit your needs.
    Walnut Creek, CA ADU Builders

    Building an ADU involves careful planning and execution. Choosing a reputable contractor is crucial to ensure a successful project. Golden State ADUs is renowned for its expertise in ADU construction in Walnut Creek, CA. Here’s why we stand out:

    • Reputation: Check online reviews and ask for recommendations to gauge the quality of our work.
    • Licensing: We hold all necessary licenses and are well-versed in local regulations.
    • Cost Transparency: We provide clear, upfront pricing with no hidden costs.
    Types of ADUs Offered

    Golden State ADUs can help you choose from various types of ADUs, each with unique benefits:

    • Attached ADU: Shares a wall with the main house, often more affordable and quicker to build.
    • Detached ADU: A stand-alone unit providing greater privacy and design flexibility.
    • Conversion ADU: Involves remodeling an existing space like a garage, offering a cost-effective solution.
    • Junior ADU: Compact units up to 500 square feet, ideal for small spaces.
    Regulations for ADUs in Walnut Creek

    When planning your ADU in Walnut Creek, consider these regulations:

    • Size Constraints: Conventional ADUs are limited to 1,000 square feet, while Junior ADUs cannot exceed 500 square feet.
    • Utilities and Features: Must include a bathroom, bedroom, kitchen, and a separate entrance.
    • Zoning Regulations: Ensure compliance with local zoning laws to avoid construction issues.
    Benefits of Adding an ADU

    Creating an ADU on your property offers several advantages:

    • Guest Housing: Provides a private space for guests, enhancing their comfort and privacy.
    • Family Accommodation: Allows family members to live close by while maintaining their independence.
    • Additional Income: Renting out your ADU can significantly boost your property’s value and provide extra income.
    Why Golden State ADUs?

    Choosing Golden State ADUs means opting for expertise and quality:

    • Free Estimates: We offer detailed, no-obligation estimates with clear cost breakdowns.
    • Full-Service: Our services cover everything from new construction to remodels, tailored to various tastes and budgets.
    • Client Feedback: We value and act upon client feedback to ensure satisfaction throughout the project.

    Ready to enhance your Walnut Creek property with an ADU? Contact Golden State ADUs today to get started on turning your vision into reality. For more information on prefab ADUs and other options, reach out to us!

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      Golden State ADUs Proud to be Recognized by

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      What Makes Golden State ADUs Unique Qualities

      BUILDING FOR YOU

      Our process is organized, streamlined and designed with you in mind.

      CERTIFICATIONS

      We hold many awards and certifications in the industry.

      BIGGER SAVINGS

      In-house team means vendor savings passed on to you.

      DESIGNER SHOWROOM

      Professionally designed showroom with you in mind.

      NO HIDDEN COSTS

      We provide detailed estimates showing you what you get for your money.

      SUPERIOR PRODUCT

      Furniture-grade quality products at affordable prices.

      TRUSTED SOURCES

      Our showroom carries the latest materials from trusted brands.

      ECO FRIENDLY

      Our materials are eco-friendly and green certified.

      NO PRESSURE SALES

      We want you to be confident in your decision, no pressure sales.
      What Client Says

      Customer Reviews

      VlaDi P.
      VlaDi P.
      2024-06-19
      Very detail oriented group of guys designing and engineering homes. Had my addition and an ADU as well as my customers projects engineered by Golden State Design & Engineering, great experience.
      Semir Avdic
      Semir Avdic
      2024-05-18
      Golden state design did the design and engineering for my custom home. From the start William and his team were beyond helpful. The plans were well thought out and easy to read. Throughout the project any questions I had, William made himself available to answer very promptly. In addition to this, Golden State took on several other projects for us, and the results were just as great. William prepared all of the paperwork, filed with the county and did any revisions the county needed. I am beyond happy with their service and would recommend them to anyone. I will be doing an ADU in the near future and I can’t wait to see what golden state design can help us come up with.
      Angel Raya Soto
      Angel Raya Soto
      2024-05-03
      Golden State Design and Engineering did a great job with the design and with the permit process for my ADU, I highly recommend this firm, very knowledgeable!
      Ilia Gotisan
      Ilia Gotisan
      2023-10-26
      It was an absolute great pleasure working with Golden State Design & Engineering on our custom home. Even though we were working in different states, their professionalism, quick responsiveness, and attention to every detail exceeded my expectations. William and his team took their quality time and effort to bring all of our dream home expectations into reality. Their envision is highly unique and impressive. Thank you to the Golden State Design & Engineering team for your service.
      Nicholas Beliy
      Nicholas Beliy
      2023-07-18
      Recently had the pleasure of working with Golden State on a restoration project, and I must say, they surpassed all my expectations. We hired them to handle the design, drafting, engineering, and permit acquisition, and their expertise and professionalism were truly outstanding. From the moment we brought Golden State on board, it was clear that we had made the right choice. Their team, led by William, displayed an impressive level of knowledge and skill throughout the entire project. Their attention to detail and commitment to excellence were evident in every aspect of their work. They took the time to understand the unique requirements of the restoration project and delivered a design that perfectly balanced modern functionality with the preservation of historical elements. Their ability to capture the vision of the project and translate it into a comprehensive plan set was truly impressive. They paid meticulous attention to every detail, ensuring that all specifications were accurately represented in the drawings. As well as addressing the structural challenges. One of the greatest advantages of working with Golden State was their ability to handle the often time-consuming and frustrating process of obtaining permits. They took charge of the permit acquisition process, liaising with the necessary authorities and ensuring that all documentation was submitted promptly and accurately. This saved us a significant amount of time and allowed us to focus on other aspects of the project. Throughout the project, William and Yasir were reliable and responsive points of contact. They maintained open lines of communication, keeping us informed of progress, addressing any concerns promptly, and providing valuable guidance and expert advice when needed. Their professionalism and dedication to client satisfaction were truly commendable. Thank you, Golden State Design and Engineering Firm, for your exceptional services!
      Jing Zhou
      Jing Zhou
      2023-07-15
      I hired William to design my ADU for me! They are very responsive and efficient! After we got the permit from the county, they are still willing to follow up if I need to make some changes to the permitted plans. And when my contractors have questions about the plans, they are willing to spend the time to discuss with my contractors. I really appreciate their help!!!
      stepan gorodnyy
      stepan gorodnyy
      2023-07-07
      I had the most incredible experience working with William and his team at (Golden State Design & Engineering), on our custom home. From their responsiveness and professional approach to their design and engineering skills, every aspect of the process exceeded my expectations. Their team's understanding and kindness made the collaboration smooth and enjoyable. There informative guidance and attention to detail truly set them apart, and I most definitely would recommend their services to anyone in need of residential design and engineering expertise.
      Alek Davis
      Alek Davis
      2023-04-23
      William built an ADU in my backyard. He handled everything from planning and getting permits to construction (only the original home plan was my idea). Some jobs (foundation, roof, HVAC, electrical, stucco, etc.) were done by subcontractors, but William was closely monitoring the work during all phases and his team did a lot of hands on jobs (site preparation, framing, insulation, interior, cabinets, painting, etc.) as well. In a few instances, William came up with the solutions that saved me thousands (he figured out how to set up electrical without having to add a new panel, chose the optimal option for solar, etc.). I'm very happy with the end result and would not hesitate to recommend William and his company for any type of construction or remodeling jobs.
      Elite Auto Imports Inc.
      Elite Auto Imports Inc.
      2022-10-29
      William was easy to work with. He knows his trade well. Till next project guys! Thanks again.
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