Get matched with top architects/engineers in South 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.

"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!"

"My residential construction project was abruptly put on hold when a city inspector required a survey to verify the property boundaries. Unfortunately good surveyors are in high demand (at least 4 weeks out), and Voorheis and Voorheis was no exception. However, after discussing my job with Jeff, he thought he'd be able to work it in very soon between other clients. Jeff patiently answered my questions, and I ultimately felt confident to hire them for the survey. I was really happy with their thoroughness and professionalism, and ultimately the city inspector was satisfied and approved our setbacks. Thanks to Voorheis and Voorheis for getting my project quickly back on track with their excellent and timely work!"

"Overall, we were extremely pleased with the planning and execution. Mike had excellent ideas for the design, and we were very happy with how the plans turned out and how easy he was to communicate with. We made a couple small changes once the project got going, and Dee had some great ideas to ensure that everything would produce the best end result. The crews were very hard working and did a wonderful job with execution of the plan. Our only minor complaints are that the cleanliness throughout could have been better (yes, it's a dirty job, but a bit more care in that area would have been nice), and the painting of our pergola was done pretty well, but there was some room for improvement there given the cost of that part. We are definitely very happy overall with our yard, and we will be using G&L again for our front yard. We now have a back yard that we really want to spend time in!"

"Excellent experience again with Alpha Structural. Charlie Rosenkranz came to see the 3-story apartment building in West Hollywood. We discussed what the soft story retrofit plans will likely include. He's knowledgeable and experienced. We appreciated his professional no-pressure approach and answering our questions. Alpha performed an exploratory investigation of the support structure, as architectural plans were not available. They engineered the plans with city approval. They then consulted with us and provided the approved THP (Tenant Habitability Plan) paperwork. Production Manager Dave Schlaich and Job Supervisor Seth Price met me before construction. Dave went over the approved plans and explained the work that would be performed, and the purpose. They both answered all my questions. Lawrence and Antonio were the main work team. They were very pleasant and answered all our questions. Both had great explanations with Lawrence being very detailed. Seth provided timely progress reports by phone and text. He answered all questions, and provided contacts for automatic shut-off gas valves and stucco work. Despite Covid-19, they scheduled and passed inspections, and completed the work in under a month. We've seen projects by other companies stuck in limbo for months with no progress, so we chose Alpha to avoid complications. They removed all debris, and left the property clean. The tenants and neighbors had no complaints. Daniel Aparicio also explained various issues. Communication with everyone, including the office staff, was excellent. We're very pleased with this experience."

"If you?re here looking for an architect, look no further. Francisco is the man for the job. He helped us with a garage to ADU conversion. Francisco kept us informed and communicated with us throughout the entire project. He was very professional, helpful and patient. We had tons of questions and he had the answers. He is very efficient and great at his job. We would hire him again with no hesitation. Thank you Francisco for making for making this process a breeze!"

"Kn remodeling and supplies did an excellent job, which consisted of remodeling two bathrooms, the kitchen, two bedrooms, living room, dining/bar area, and upgrading the garage ceiling.

This townhouse project included stripping wallpaper (5+ rooms), painting throughout including staircase walls/ceilings and all the doors and closets, baseboards, toilets, bathrooms shower doors + associated plumbing hardware, bathrooms tiling, and cement-board floor replacement of linoleum in the kitchen + bathrooms.

During this process, the crew took great care not to damage pre-existing items in the house, including the hardwood floors and others. They were very attentive, courteous and professional, and importantly responded to our needs for some scheduling accommodations.

Debris removal/collection was conducted daily, allowing us a welcome degree of relatively unobstructed normalcy during and (especially) after work-days, as the multi-week project progressed. Dust-protection of floors, staged items and furniture was well-implemented, with residual particles (floaters) needing post-remodeling attention.



I want to thank Nathan and KN Remodeling
"

"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."