*The Angi rating for Architectural Service companies in Antioch, 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 Antioch, 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 January 28, 2026
Serving Antioch, CA and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Very thorough, prompt and professional."
+35
Serving Antioch, 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 Antioch, 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 Antioch, 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 Antioch, CA and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"I highly recommend this company. All projects are always completed on time, and communication is excellent. I’m always kept informed about what’s happening with the project and what stage it’s at. Whenever I have questions or need an update, they respond quickly and clearly. They are reliable, professional, and very easy to work with."
Serving Antioch, 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 Antioch, 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 Antioch, 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
Serving Antioch, 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 Antioch, 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
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