Get matched with top architects/engineers in Downey, 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.

"Very experienced structural engineer who could analyze our rooftop deck and give us a plan for doing the roof and hotub of our dreams!"

"Having built many projects and delt with many engineering firms in my business, I’m very impressed with how quick and professional they are, I personally met with Peter himself, a class act gentleman all the way! I would recommend him and his team without a doubt, look forward to giving them all my projects from now on, apricate all you and your team are doing for us. Thanks guys!"

"Well - experienced workers provided the various construction needs"

"Tolga was very professional and far exceeded our expectations. He drew up our structural plans very quickly and was easy to reach whenever we had questions. I would highly recommend TY Engineering to anyone looking for a structural engineer, and if I need one in the future they will be the first I call."

"They drafted up engineering plans for me to go from a composition shingle roof to a metal roof, added 5 skylights, so they had to calculate and engineer the rafters around the skylights, plus adding a roof cover over the front porch. Their calculations included swapping out the ridge beam to a larger beam and some supports upstairs for the ridge beam. Their turn around time was quick."

"Excellently well! Sandy helped me coordinate the inspection expediently. We were on a tight timeline and she pulled some strings so we could get the inspection done in time. Our inspector/structural engineer, Erinn, was personable, thorough, knowledgeable and timely. I highly recommend him and Alpha Structural!"

"Had a wonderful experience remodeling kitchen. Nathan made the process stress-free. Recommend"

"After initial consultation by phone we quickly scheduled an appointment. The construction engineer came in 2 days, reviewed our project and provided supporting documentation for our needs. Highly recommend!"

"We did a full remodel of our place, full new kitchen, and expanded our place into the backyard for a new master suite. Pac Sands did a really great job with our designs. Great tools that made the communication easy with the plans and changes we needed. And they handled the engineering and permitting too, which was great. Highly recommend."