Extremely unprofessional, doesn't answer. They're refusing to give my deposit back. Waited a month…read moreto hear from them, but the second I asked for my deposit back, they suddenly were able to answer in a minute. Stay far away.

I have actually worked with Fellenzer Engineering many times.I am retired now however I worked for…read moreAshley Mechanical for 34 years. During that time I worked on quite a few jobs that were engineed by the Fellenzer group. Very professional and a pleasure to work with.

Tom's service is phenomenal. I requested a quote for a project via Yelp (the project was to…read moreevaluate if a portion of a wall could be removed). Tom asked for pictures, was very responsive, explained how he was evaluating the project, gave us a very fair quote, and was flexible scheduling the visit. On the evaluation day he was on time, and did an extremely thorough evaluation, providing drawings and explaining to me exactly what were the concerns and his conclusion. We will definitely be hiring him again for future projects. Thanks you!

Would recommend highly. Came to our home and evaluated the situation, explained thoroughly what…read morewas needed structural and helped us resolve our problem. We had called numerous people to come and had allot of misinformation given to us. We have a very old home that is very unique and has very unique problems. Thankfully we found Structural Engineering Services.

We needed a structural engineering evaluation and had recommendations for two companies. We planned…read moreto go with the recommendation from our general contractor, thinking that this would be the easiest to coordinate with the rest of our project. Scheduling was not a smooth process, however, and more than a week after they were contacted, we still had not been given an appointment. We contacted Nick at Colonna Consulting and easily scheduled a date for the assessment. We were also finally given a date by the first company, which was one day earlier than Nick's schedule. Their contract stated that reports were usually ready in 2-3 days, but that this was not guaranteed. Nick told us we could have a report the same day and that he would work on the architectural drawing over the weekend (appointment was on a Friday afternoon) if we needed one. We are very happy that we decided to go with Colonna Consulting. Nick arrived on time for our appointment. He was very professional and spent more time than we expected explaining what he found and the appropriate remedy. He was extremely patient and answered all of our questions. We did need an architectural drawing, which was completed over the weekend and sent by email on Monday. He sent the original directly to our contractor for submission with the permit application. I recommend Colonna Consulting without any reservation.

I searched for quite a while to find a structural engineer, and I'm so glad I found Nick. He is…read moreprofessional, knowledgeable, and excellent at what he does. I would highly recommend Nick to anyone in need of his services.

We hired Louis to inspect a property we're looking to buy, a home from 1860. His knowledge and…read moreability to explain what he was inspecting and why it was important while doing a detailed check is amazing. His expertise gave us great comfort in the quality of the home.

Louis came out to inspect our condo in August 2025. He was extremely professional and concise while…read moreconducting the inspection. He was very knowledgeable and thorough in every aspect of the inspection process. I would highly recommend his services if you are looking for professionalism and knowledge.

Joseph, you were a lifesaver for us!!!!!!!!!!!!!!!!! We were…read moreunder contract on a house, and it felt like the sellers were trying to hide a problem -- one basement wall was literally blocked off with boxes stacked almost to the ceiling. He moved everything , checked carefully, and found structural cracking that could have easily been missed. He even looked behind the refrigerator -- who does that? What really blew me away was how detail-oriented he was. He wasn't rushing, and he wasn't doing the bare minimum. He was genuinely trying to protect us from making a very expensive mistake. And on top of that, he explained everything in plain English. He used simple examples to explain how the foundation and framing work -- the kind of explanation you could tell to a kid and they'd get it. That clarity made it easy for us to understand what we were dealing with and make a decision. I'm honestly so grateful. Buying a house is a huge commitment, and Joseph treated it like it mattered. If you're looking for a structural engineer who is careful, honest, and SUPER detail-oriented, I can't recommend Joseph enough.

Very satisfied with the amount of time, attention to detail and clear explanations in a way that I…read morecan understand. Joseph went above and beyod me expecations during the inspection and followed up with me in detail the next day. He explain what repairs should be done right away and which ones could be done over time. I Will defininetly use him in the furture and recommend to anyone looking for a trained and knowledgeable engineer.

I had a small issue with the parge in the corner of my garage. It looked cosmetic, but I wasn't…read moresure so I reached out to Cornerstone for advise. They were kind enough to call me back and let me know there was nothing to worry about and I could find any local mason who could come and patch it up. I really appreciated that they took the time to even call me and let me know. That alone shows intgrity. Should I ever, or anyone I know need major work that is in their wheelhouse I'm going to be sure to recommend. Thank you!

From the owner: Cornerstone Structural Engineering Consultants specializes in the design of steel, concrete and…read morewood structures. Mr. Brackmann is the President of Cornerstone Structural Engineering Consultants which was established in November, 1995. He is responsible for the preparation of drawings, specifications, reports, and construction observations for all of the firm's projects. His past projects include the structural design of new and rehabilitated commercial, industrial, and institutional buildings; sanitary and drainage structures; waterfront facilities; structural investigations/reports; special structures design; piling and foundations; and resident field engineering/construction observation.