What a great company been doing business with Challman engineering since 2007 bill Challman in…read morestaff is always professional engineering plans are always done in timely manner when in doubt use challman engineering they will get the job no engineering company does it better

Challman Engineering is the very best when it comes to customer service…read more They really know their stuff. I can always count on their amazing staff to handle anything from a routine RFI all the way to a complete set of professional plans. Thank you Bill for always taking the time to explain things to me in a Windows-for-dummies version, lol. - You guys Rock !!

I can't say enough good things about Emad. From start to finish, he went above and beyond to help…read moreus navigate the soils engineering process and, most importantly, get approvals through the City of San Bernardino. Emad was extremely knowledgeable, responsive, and patient in explaining what was needed at every step. When challenges came up with the city, he didn't just hand off the problem--he actively worked with the reviewers, followed up consistently, and made sure nothing fell through the cracks. That level of dedication is rare. If you're looking for a soils engineer who truly advocates for their clients and understands how to work with local jurisdictions, Emad is the one. His professionalism and commitment saved us time, stress, and unnecessary delays. Highly recommend without hesitation.

Based on a description and photos I provided, Emad told me I need a contractor instead of an…read moreengineer and provided multiple recommendations. He responds to emails in a very swift manner.

My husband and I had been researching different Design and Engineering firms and finally choose…read moreStewart Design and Engineering. Not only did Christine explain the process throughly with us before we even started but she put our mind at ease explaining that they would handle the entire process with the city for approval for us. Our engineer Carl was amazing with us from the very first consultation. He designed and engineered our home addition and was very detailed. He was responsive the entire time and provided cost effective solutions that really saved us. He is very knowledgeable and skilled at what he does. He really cares about his clients and it definitely shows. I would recommend them if your looking for any design or Engineering services.

Three star is for the hope that they would be a real place who can provide construction documents…read morefor my home. After many times I have reached out to them to start the measuring process and start design from the pre design work I have given them. There was many follow ups with excuses. I attached the email excuse they gave after I sent them what they asked for. Luckily no money was paid out to them. I'm

Courteous, friendly and fast. They were a great help when we needed a test fast…read more They actually answer phones and call back when they say they will.

From the owner: Civil Engineering | Land Surveying | Construction Staking | Geotechnical Engineering | Construction…read moreMaterials Testing | Construction Inspection | Construction Management | Soils Investigations | Soils Compaction Testing | Percolation Testing | Infiltration Testing | Concrete Testing | Masonry Inspection | Welding Inspection | Asphalt Paving Inspection | Laboratory Testing | Sub-Division | Grading Plans | Feasibility Studies | Storm Water Pollution Prevention Plan | QSD / QSP | Hydrology Studies | Boundary Surveys | ALTA Surveys | Easements | Topographic Surveys | GPS Surveys | Cadastral Mapping | GIS | Aerial Drone Topography | Contract Management | Project Management | Estimating | Budget Analysis | Site Operations | Site Supervision | Strategic Planning | Cost Control

I found STEN engineering on google! Eugene returned my phone call he was able to provide…read moreinformation on an SOR request report for a project he delivered right away and was able to provide a honest price and work. I recommend doing business with this company 5 stars

My husband and I are very happy that we turned to Evgeny. He proved to be very professional and…read morepunctual. He came and inspected our roof, as we were planning to install solar panels with Tesla. However, Tesla refused to provide a 100% offset and only offered 66%, claiming that there were issues with our roof. So we started looking for an engineer who could assess the real condition of the roof. Evgeny arrived right on time and did a thorough inspection. All the paperwork was ready the very next day. We 100% recommend him!