Double-D Engineering

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72 Otis St
San Francisco, CA 94103

Double-D Engineering is a structural engineering firm based in San Francisco, CA, specializing in a diverse array of projects including seismic upgrades, indoor climbing structures, and commercial buildings. The company prides itself on fostering long-term relationships with clients, ensuring excellent service and quality design while completing projects efficiently and within budget.

With a team of experienced professionals, Double-D Engineering focuses on clear communication and coordination, helping clients navigate the complexities of structural engineering. Their competitive fees and practical approach make them a preferred choice for both residential and commercial construction needs in the Bay Area.

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4.010 reviews
Photo of Carolina S.
Carolina S.
3/14/2013

We were going to structurally retrofit our three level building- we live on the top floor, with another condo in the second level and garage on the main. Don David was extremely professional and...

Photo of Michael G.
Michael G.
12/15/2023

Kevin was a great resource for our seismic retrofit project. At the beginning, he drew up plans that took into account our budget and needs. He then helped us find a contractor and put the other...

Eesayah O.
4/5/2023

knowledgable, and generous. David consulted but sadly could not take on my project. He is a diamond

Kelly K.
10/8/2021

Mark Lonning at Double-D Engineering is a highly competent, professional, and capable structural engineer. He is also a really decent guy as well and easy to work with. Double-D helped assess the...

John N.
9/5/2013

I've been very Pleases with these guys! Fair and honest Used Don for two projects now he is really a terrific guy!

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