*The Angi rating for Architectural Service companies in Discovery Bay, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Architectural Service needs.
*The HomeAdvisor rating for Architectural Service companies in Discovery Bay, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Architectural Service needs.
Last update on July 26, 2026
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Prompt response, good detailed work, easy to communicate and work with"
+35
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 2018
Free estimates
Credit card accepted
At Guillen Design & Drafting Services, we help bring your building ideas to life whether you're starting from the ground up or remodeling an existing space. We specialize in producing well-designed architectural construction documents tailored to each clients unique needs. From initial concept through the permitting process, we're here to guide you every step of the way. We also team up with the appropriate engineers and Title 24 energy consultants to ensure your plans meet all codes and requirements. Our goal is to make the design process smooth, clear, and stress-free so you can focus on your vision while we handle the details.
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"Rich knows his business. He's thorough, very reasonable in pricing, and follows up until the job is complete. He's easy to work with, and responds instantly to questions. If you need building plans for permits or design, Rich will get it done."
+10
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 1999
Free estimates
Customers say: True professional
"Very professional, on time no problem. Joy to work with such competent architect"
+2
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 1997
Small jobs welcome
Offers commercial services
"Shilpa was wonderful! On-time and budget and super helpful at every step of the way!"
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 2012
Customers say: Quick response
"Esther was very easy to work with and gave us a nice design for our bathroom re-do."
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 2017
Free estimates
Customers say: True professional
"Our kitchen remodel exceeded our expectations, providing us with a beautiful and highly efficient space for cooking and gathering. We're thrilled with the results, as the new design seamlessly integrates style and functionality."
+1
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 2009
Free estimates
Warranties offered
"The work was wonderful. They did a very good job. I got a reference from my daughter. It was very good. It was very pleasant working them. I would refer them."
+46
Serving Discovery Bay, CA and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"Michael and his team were incredibly professional. They remodeled two of our bathrooms, including doubling the square footage in our master suite. Michael stood behind his work and insured. We were fully satisfied with the product. Throughout every stage of the process, he kept a clean and tidy, worksite, and was respectful of our families time and space. We’ve referred Michael to many of our friends because of the great work and professionalism he exuded on the job. We plan on using Michael and his team for our kitchen makeover later this year."
+14
Serving Discovery Bay, CA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"I hired them to create plans for an apartment building. The process was quick and painless. Cost was good. The plans are full complete abd ready to take to builders for quotes. I will definitly use them again."
+23
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