Get matched with top architects in Discovery Bay, CA

"I would rate your engineering design experience as excellent. Your skills in creating detailed drawings, problem-solving, and delivering innovative solutions are highly impressive."

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.

"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."

"Very professional, on time no problem. Joy to work with such competent architect"

"Shilpa did an amazing job designing an addition to a home we bought. It included remodeling an extra framed garage into a master bedroom suite, laundry room and powder room plus adding to its size . The project also included doubling a great room to blend into the house with the new suite as well as opening up the kitchen to this great room and raising the ceiling . The design blends really well and will provide a nice open plan for living and entertaining I was impressed with how well Shilpa understood what we wanted and executed the plans in the time frame promised if not earlier. She also pushed it thru the planning dept. with minimal need for changes. The project is on going and is moving along well Shilpa is always available to answer questions as things progress. The contractor feels she is easy to work with as well. I really enjoyed working with Shilpa and easy her demeanor ."

"Omid and his team built a brand new bathroom in my home. The work was complicated as the home was just built in 2020. The foundation was concrete as thick as 18 inches with post tension cables running through. Omid laser mapped everything and determined the depth of plumbing through precise calculations. His team worked very carefully excavating through the concrete to then go 6 feet deep and access the main plumbing line and then perform all the work to connect the rest of the new plumbing, required by the new bathroom. Omid also utilized the space to the maximum and the bathroom looked much bigger than I had initially thought. The finishing was splendid with octagonal marble tiles aligned to perfection, additionally Omidâ  s team worked on extending storage spaces under the stairwell to further maximize storage value for us. I would highly recommend Omid. He and his team worked round the clock and even on weekends. I was really impressed by their schedule. I have heard horror stories where contractors leave work in the middle of the project or take up multiple assignments and only spend a few hours a day. But with Omid I was pleasantly surprised by the 8 hour work days and when they were running behind they were coming over weekends as well. Great job done at the end!!"

"Esther was amazing! We are so glad we had Esther complete our kitchen plans! She presented different options which were great. She's very professional & always accommodating. Was always willing to make any changes. She's a gem. So glad we did plans, as wasn't going to but glad we did. Thanks Esther!"

"Roberto Sandoval and his company have been doing our landscaping for many years. We’ve always relied on him for honest, reasonably-priced services with excellent care and attention. Absolutely recommend him highly!"

"Our kitchen remodel with McCormick Home Builders went beyond our expectations. Leoni and her team took the time to understand exactly what we wanted. The open layout design changed the way we use the space, and it’s been perfect for family gatherings. They were prompt, courteous, and genuinely invested in making sure we were happy. Really impressed!"

"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."