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Simplengi Engineering

4.7 (23 reviews)
Closed 9:00 am - 5:00 pm

Services - Simplengi Engineering

Architectural design

Architectural project management

Earthquake retrofitting

8 More Services

Foundation repair

Foundation replacement

Structural certification

Structural drawing

Structural engineering design

Structural engineering project consultation

Structural forensic investigation

Structural inspection

Simplengi Engineering Photos

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Ask the Community - Simplengi Engineering

Are you a licensed architect? Thanks

Hi TB, we are not an architecture firm, but we are a licensed structural engineering firm.

View All 2 Questions

Review Highlights - Simplengi Engineering

David stepped in when my wife and I were in need of good structural engineering work for our home remodel.

Mentioned in 22 reviews

Read more highlights

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Joshua B Kardon + Company Structural Engineers - The SkinnyBrace in place with rebar and bolts being placed in the footing trench before the concrete pour.

Joshua B Kardon + Company Structural Engineers

(6 reviews)

I contacted Joshua B. Kardon, PhD, SE, F.ASCE, on the advice of a friend who is an architect after…read morewe won the bidding war (for $869K) on a 1924 Craftsman home in San Leandro in 2019. It had several issues, especially a problematic (cracked) original foundation. When Joshua Kardon informed us that we might have to spend a considerable portion of the above purchase price to properly fix up the house, make it earthquake-safe, and bring it up to current codes, we decided to pass on this lovely house. (He told us that replacing the cracked original foundation and raising the basement ceiling from 75 inches height to 96 inches on the 1400-square-foot home - all by itself - might cost $200-$300,000 and take many months. The home had other issues, too.) We later purchased a smaller 1954 ranch-style home in almost-as-built condition and called Joshua Kardon again for a consultation about seismic strengthening. He designed the almost-finished project that spans the front of our home and protects it against earthquakes. Joshua Kardon selected a "SkinnyBrace" by Thor Matteson, SE, of Quake Bracing LLC as the most cost-effective way to anchor our garage and the front of the house using attic collectors and garage shear walls. Nieto Valle Construction of Hayward has executed his designs and will soon finish the garage drywall and attic insulation. Joshua B. Kardon, SE, has always insisted on designing and implementing the best possible seismic strengthening solution for us and his solution is now in place. His attention to detail and insistence on doing things "the right way" are highly reassuring and have produced great results. Josh is also very personable, patient in educating us as to why certain design strategies work better, and has a great sense of humor. I would recommend Joshua B. Kardon + Co., Structural Engineers, in a heartbeat to anyone considering seismic strengthening or any other projects requiring the services of an experienced, thorough, detail-oriented, and friendly structural engineer.

Josh was very kind and helpful in providing feedback on an early inquiry as to how I should…read moreapproach working with a structural engineer and contractor in an aspirational project I've started to think through. His calm, kind and approachable energy is exactly the kind of professionalism you want on your upcoming project.

ProStruct Engineering

ProStruct Engineering

(24 reviews)

Financial District, SoMa

Working with Irvin at Prostruct Engineering was a breath of fresh air. After purchasing a new home…read moreand enduring my first winter, I was incredibly nervous to find significant water in my crawl space and cracks along the raised foundation. I initially signed a contract with Prostruct, but after Irvin reviewed my photos, he demonstrated a level of integrity that is rare to find. Instead of taking the job, he honestly informed me that my specific issues fell outside their scope. He took the time to explain what I was seeing, referred me to a geotechnical engineer who could actually solve the problem, and issued me a full refund. I greatly appreciated his transparency and professional guidance. I highly recommend Prostruct Engineering to anyone looking for an honest assessment--they clearly prioritize the customer's needs over their own bottom line.

DO NOT USE THIS COMPANY -- terrible communication and shady tactics…read more I reached out to ProStruct Engineering for a simple onsite structural evaluation at my home in Danville. They sent a 10-page contract and demanded the full $1,100 upfront the same day, before any work was even scheduled. After I signed and inquired, I asked the project manager multiple times for a firm date when the engineer could come out for the survey. Instead of giving a straightforward answer, they used clear delay tactics and kept putting me off with vague responses. When I finally decided to cancel before any site visit or report was started, their own contract (Section 5.5) clearly states I should only owe a $500 "setup fee." Yet they are now treating it as if I owe the entire $1,100. This is a classic "pay us everything first, then we'll drag our feet" operation with a heavily one-sided contract designed to trap customers. Save yourself the stress, the risk of a lien on your house, and the endless runaround. There are plenty of other licensed structural engineers in the Bay Area who actually communicate and don't play games with scheduling. Would not recommend. Proceed with extreme caution.

EAS Designers - Recent Project in Oakland. Please visit our website to see full version of our portfolio. https://easdesigners.com

EAS Designers

(38 reviews)

I recently had the pleasure of working with EAS Designers, and I couldn't be more satisfied with…read morethe experience. From start to finish, their team was professional, responsive, and genuinely committed to delivering good-quality results. Despite the recent city legalization challenges, they handled everything with transparency and expertise, keeping me informed throughout the entire process. Their knowledge of local regulations and attention to detail really set them apart and gave me peace of mind. If you're looking for a reliable and trustworthy design team, I highly recommend EAS Designers. I would absolutely work with them again and encourage others to do the same!

Arash helped us with our on going Kitchen Remodeling issue where electrician cut notches on the…read morewindow header compromising it completely. Arash visited the site on a short notice, evaluated the situation and provided with multiple cost-effective, time-effective, not too invasive solutions to bring back the strength of the header. He also took time to answer all our questions, inspected the floor above to check the load and structure etc. Very satisfied with the service. He recommended options that are feasible and quick. The whole onboarding process was quick and easy with Siavash. One day within a call got the appointment. The consultant came prepared looked at our designs. They did not upsell their service in fact they did the opposite to keep our interest in mind. I would work with EAS again when needed. Definitely recommended.

Simplengi Engineering - structuralengineers - Updated May 2026

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