Get matched with top architects/engineers in Pasadena, CA

Whether you're upgrading an existing structure or building from the ground up, Peter T. Erdelyi & Associates, Inc has the expertise to oversee your project through completion. We have designed more than 10,000 structures in the Los Angeles area over the past four decades; from apartment buildings to new single family homes to additions and remodels both for residential and commercial clients. Our team of professional engineers, drafters, expeditors and project staff will deliver plans that withstand the test of time.

"I am sorry it has taken me this long to write my glowing review of Pristine Construction! They completed a kitchen remodel for us in February and we are thrilled with the results. In the past we have had some nightmarish experiences so we were reluctant to take this project on. But after reading all the positive reviews and meeting the team in person we moved ahead and we are so glad we did. From the start, Nathan patiently worked with us to draw up the plans, scope of work, budget and timeline. His expertise and suggestions made all the difference in ensuring we made the most out of the space we have. He met me at the tile store to select the backsplash, he has a good eye for design and style. Once the project got underway Mike was on site overseeing their own personal crew for flawless execution. Mike also lent his expertise in helping me to select final touches like drawer pulls, kitchen faucet and lighting. The crew were courteous and neat. Every day I received emails or phone calls from Emma in the office updating me on what was happening, who was coming and going, when payments were due, etc. I felt completely looped in and reassured at the overall coordination of all the people involved. This is a top notch company. The project was completed on time and on budget. We are thrilled with the results. Even my children's friends remark that it looks like an HGTV remodel! Nathan and Mike are honest, detail oriented and very professional. It was a pleasure to work with them. We would recommend them to anyone and already have!"

"Working with A. was hands down one of the best decisions I made for my remodel. From our first meeting, they really listened to what I wanted and brought ideas to the table that I hadn’t even considered. They found the perfect balance between style and functionality, making my home not just beautiful but also incredibly livable. Throughout the process, they were easy to communicate with, super responsive, and always on top of things. Remodeling can be stressful, but they made it as smooth as possible. The attention to detail was next level—I kept noticing little thoughtful touches even after the project was done. I couldn’t be happier with how everything turned out. Andi was friendly and helpful. If you’re looking for an architect who genuinely cares about their work and their clients, A. is the way to go. Highly recommend!"

"Structural engineer came by to confirm if wall was non-load bearing as suspected. Confirmed, can now move on with my project."

"Office personnel knowledgeable and patient and professional and courteous. The Engineers' who arrived at my thank you. Very professional and explained all questions I asked thoroughly. Great job. Will recommend."

"The architect was professional, knowledgeable, and responsive throughout the project. Communication was clear, questions were addressed promptly, and the design met our needs and expectations. Their attention to detail, understanding of code requirements"

"Let me tell you about Amir he is a stand up and honest guy!! When all architect companies wanted to take me for thousands of dollars Amir instead gave me the tools (knowledge) of what needed to be done to get the site and floor plan done for the city. You don’t meet many business people that will give you honest free advice so Amir is greatly I meant greatly appreciated for his assistance and guidance in getting my site and floor plan completed for the city. Will definitely work with Amir again!!!!"

"Jeff was great to work with! He responded quickly to my inquiry about needing a survey, his crew who came out to do the survey was very friendly and provided me with a lot of information, and his price was extremely fair for the work performed. I highly recommend this company, and have even passed along his information to my architect to refer clients to in the future!"

"I recently hired G&L Design Building and Landscape for a major outdoor project, and I couldn't be more thrilled with the results! From start to finish, the experience was seamless, professional, and truly impressive. Dror, the owner, is a visionary. His attention to detail, creativity, and commitment to quality were evident in every phase of the project. He took the time to understand my vision and brought it to life even better than I imagined. His team built a stunning retaining wall, installed lush, vibrant turf, and laid down beautiful interlocking pavers that completely transformed the space. On top of that, they planted an incredible selection of trees and flowers that added the perfect finishing touch—absolutely breathtaking! The crew was punctual, respectful, and worked with great care and precision. It’s rare to find a team so dedicated and passionate about their craft. If you're looking for top-tier landscaping and design, look no further than G&L Design. Dror and his team are the real deal—professional, talented, and a pleasure to work with. Highly recommended!"

"From our very first meeting I knew these were the right people for our project. We added a second story to our home in El Monte and they designed it so beautifully that it doesn?t look like an addition at all. Neighbors keep asking who our architect is."