
We are a small structural engineering firm here to help you get your project off the ground, quite literally. We work with architects, homeowners, contractors, and others on remodels, additions, seismic retrofits, and more. Too often in design work, not enough time is allotted on proper design, presenting issues that arise during construction and drive up project costs.
In most industries, the design stage costs about 10% of the job and the construction the other 90%. Building is no different. Give your project the attention it deserves.
In most industries, the design stage costs about 10% of the job and the construction the other 90%. Building is no different. Give your project the attention it deserves.
Services
New Construction
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Creating something from scratch can be simultaneously exciting and overwhelming. As engineers, we try to keep the structural design as simple and inexpensive to build as possible, while fitting within the design criteria. We believe in integrated designs and communication between design professionals in order to achieve the design objectives as efficiently as possible.
Remodels and Additions
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In doing remodels and additions, we work hand-in-hand with architects and homeowners to develop plans that will serve the need of the new space. We recognize that the majority of the cost of a project is determined in the design phase. We are therefore fans of integrated designs and creating the most elegant and efficient structural solution for each job.
Seismic Retrofits
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We help homeowners make their homes more earthquake safe by evaluating the existing building and discussing what retrofits would most benefit their structure. A seismic retrofit is any modification of an existing structure that would make it more resistant to an earthquake. Some cities have incentives in place for homeowners to retrofit their home.
Testimonials
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David came to inspect my house in South Berkeley before I purchased it. I needed to find a structural engineer that would give me some perspective on the home I was buying. He clearly and patiently answered my questions and is a knowledgeable engineer. Thank you for giving me the confidence I needed to purchase my home.
Reviews (19)
La M.
Oct 13, 2021
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This is my second time working with David and Simplengi. Thoughtful, easy to work with, reliable, and solid value. My architect and contractor were both very happy with his work through the whole process, including his willingness to make changes as needed, affordably. Definitely my go to engineer for any future projects.
Brodie J.
Feb 16, 2020
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David seems like a nice guy, and in his defense was going through a busy time when I reached out to him, BUT he has ghosted me twice without any follow up. First time was around the end of year rush, and he said he could squeeze me in. I sent him all of the info, tried to schedule a walk through, called him multiple times, and never heard back. About a month later, I tried again. He said he was sorry he fell off the map but he got super busy and had a baby coming... Not sure why he couldn't email a quick "hey, sorry, turns out I'm too swamped" note, but I was willing to overlook
Joe Whitaker
Aug 07, 2017
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David helped clarify a lot of the differing and ambiguous information that is out there for Berkeley home owners looking to do seismic upgrades as part of the transfer tax rebate. After connecting over email David made a personal house call to determine scope and scale of any necessary work. He actually found that my foundation was fairly recently upgraded, and suggested not doing a costly upgrade as any costs would likely outweigh the benefits. I found David to be extremely knowledgable, approachable, and honest. Highly recommend.
David F.
Dec 03, 2016
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I hired David in November of 2013 to inspect and provide a professional assessment of the foundation for a home (built in 1937) that I was about to purchase in the Eastmont Hills area of Oakland in 2013.
He didn't seem to take the job very seriously as he did not provide a professional write up of his findings and only offered verbal guidance that the foundation appeared to be in reasonable shape despite some cracks in the slab and slanted floors. He did indicate that it was difficult to tell for certain as walls were covering the foundation at the time.
I purchased the home and after doing
He didn't seem to take the job very seriously as he did not provide a professional write up of his findings and only offered verbal guidance that the foundation appeared to be in reasonable shape despite some cracks in the slab and slanted floors. He did indicate that it was difficult to tell for certain as walls were covering the foundation at the time.
I purchased the home and after doing
Christel L.
Jul 07, 2014
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We have worked with David on multiple occasions on the remodel of our home in Berkeley. He's been instrumental in providing us with options, drawings and calcs for things like shear walls, load bearing beams over open spaces, stairs, cantilevered decks, etc. Basically all the stuff we needed to both get our permits approved and feel confident that our house wasn't going to collapse around us after construction. As other reviewers have said, he is creative, expert, super responsive, easy to talk to and comes highly recommended.
Jimmy Q.
Jun 18, 2014
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I started my kitchen remodel with one structural engineer, but wound up switching to David at Simplengi because he is so amazing at what he does. He walked in the door and -Â without my saying a single word - knew exactly what was required for our situation. We needed a structural post removed, so he designed a very elegant and simple solution that was not over-engineered and was really easy (and cost-effective) for my contractor to implement. That's what you're looking for in a structural engineer!
Also super fast and responsive. And David was happy to be on stand-by during San Francisco
Also super fast and responsive. And David was happy to be on stand-by during San Francisco
Peter H.
May 09, 2014
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David K.
Apr 21, 2014
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I highly recommend Simplengi for any structural engineering needs.
David is a responsive, prompt, and highly knowledgeable structural engineer. I enjoyed his candid style and excellent recommendations. David formulated and documented the necessary engineering solution, so my architectural plans for a duplex remodel would pass review. In fact, my plans passed DBI the first time, and I accredit that to David's excellent work. David was even available for a call during the DBI review to help answer questions. Truly the sign of a professional who cares about his clients.
David is a responsive, prompt, and highly knowledgeable structural engineer. I enjoyed his candid style and excellent recommendations. David formulated and documented the necessary engineering solution, so my architectural plans for a duplex remodel would pass review. In fact, my plans passed DBI the first time, and I accredit that to David's excellent work. David was even available for a call during the DBI review to help answer questions. Truly the sign of a professional who cares about his clients.
Y. S.
Feb 09, 2014
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Andy M.
Dec 13, 2013
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I've never paid anyone $200 for nothing and been so happy that I had. David came over for a brainstorming initial consult. My wife and I were wanting to finish our attic space, which is a big beautiful space. David, in an hour, looked at our space and told us what he thought our options were. He said we would spend a good amount of money doing this project right, here are the hurdles with the potential project, etc. He helped us understand the project enough to do a go/no-go, which is exactly what I wanted. We're not finishing our attic, but we're not getting a divorce or wasting
Mike G.
Oct 26, 2013
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I am super excited to write this review for David's services. I was in a panic to find a structural engineer after finding out my newly purchased condo had a load bearing post removed. Not one post, but two. I am the top unit so it wasn't imminent danger unless people started walking around on the roof - which is exactly what will happen once our roof is replaced in December!
David was able to look through all the units in my building and actually find that the ground level unit had the same load bearing wall removed - an exponentially worse condition. David was able to expedite creating
David was able to look through all the units in my building and actually find that the ground level unit had the same load bearing wall removed - an exponentially worse condition. David was able to expedite creating
Sidney S.
Aug 12, 2013
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I'm a homeowner of a small house in Oakland. I needed an engineer to make some drawings of a foundation replacement project at my home. David Yadegar was able to come out to visit the site within a week, showed up on time, and had the drawings done when he promised. He was personable and educated me about the structure of my house, and made some suggestions about earthquake retrofitting and excavating more usable basement area that were really helpful. I would recommend him.
Hristiyan A.
Feb 25, 2013
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I am a contractor and I have worked with many engineers. My experience with David at Simplengi stands out as a very positive one.
I have worked with David on a few projects and really appreciate the ease of communication and his availability when needed. He pays close attention to detail, and in an industry with a lot of inefficiencies, it pays off in time and money.
I also appreciate that he has an eye on sustainability and being a more "green" engineer, while also considering cost and not over-engineering things. As a contractor, it's important to me that the engineer I&apos
I have worked with David on a few projects and really appreciate the ease of communication and his availability when needed. He pays close attention to detail, and in an industry with a lot of inefficiencies, it pays off in time and money.
I also appreciate that he has an eye on sustainability and being a more "green" engineer, while also considering cost and not over-engineering things. As a contractor, it's important to me that the engineer I&apos
Arthur B.
Nov 26, 2012
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I recently worked with David Yadegar on a landscape project I was designing. He came very highly recommended to me by a colleague who'd used his services, and David did not disappoint. He prepared all the engineering specs and calculations for the project's cantilevered patio, retaining walls, in-ground spa and water features, as well as the outdoor staircase coming down from the home's second story . He handled all of these aspects easily with his great knowledge of construction materials and methods, and he delivered his work precisely when he said he would. His efforts allowed
Trey H.
Aug 30, 2012
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We hired David as a structural engineering consultant during our recent kitchen remodel. We had some structural facets of our remodel that required his expertise regarding load bearing walls. David was very responsive to our time demands, and our contractor found him great to work with. He was more than helpful with our foundation and ceiling joist issues, giving us great confidence with our decisions. He also appended our city building permit drawings and helped that process along. If you need a structural engineer, Simplengi is a great choice.
Jeffrey W.
Aug 22, 2012
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We consulted with David before we recently purchased a house. Because the house was a "contractor flip", we wanted to feel confident about the quality of the work that was done. On very short notice, David made time for us so that we could schedule his visit in tandem with the regular home inspector that was scheduled to come.
David was fantastic! Knowledgable, easy to talk to, and thorough, he not only gave us his assessment of the place, but also collaborated with the home inspector to make sure nothing was missed. We were so happy he was there.
We cannot recommend him highly enough
David was fantastic! Knowledgable, easy to talk to, and thorough, he not only gave us his assessment of the place, but also collaborated with the home inspector to make sure nothing was missed. We were so happy he was there.
We cannot recommend him highly enough
Austin Hill Shaw
Jun 22, 2012
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I am an architectural designer who has worked with numerous structural engineers over the years. That being said, David is by far the best I've ever come across.
First off, David is approachable and empathetic. David is not only interested in giving you good drawings and calculations, he is interested in the quality of his relationship with others. As a designer, I feel open to asking him any question because he doesn't give me a look like, "What, you don't know that?!" Instead, he is huge on establishing rapport, speaking in simple, easy to understand terms, and making things go smoother for
First off, David is approachable and empathetic. David is not only interested in giving you good drawings and calculations, he is interested in the quality of his relationship with others. As a designer, I feel open to asking him any question because he doesn't give me a look like, "What, you don't know that?!" Instead, he is huge on establishing rapport, speaking in simple, easy to understand terms, and making things go smoother for
Conor M.
Apr 03, 2012
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I own a 4 story apartment building in San Francisco as David has been great in guiding me through the daunting owner/builder process. He is patient, intuitive and knows his stuff! If you dont warnt to hire an architect and design your project first hand, David and his team is the way. His drawings and calculations will fly by the Department of Building and Inspection.
Josh C.
Jun 14, 2011
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A very good structural engineer. David came up with structural plans for my 1890's era SF Victorian flat that passed SF city building department's planning and inspection services. I was a newbie when it came to remodeling and David helped me through the structural engineering portion of the project with plans and advice that were spot on for the most economical price out of any of the bids i received.