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Cerco Engineering
“Professional”
Best Civil, Structural and Environmental Engineers in Simi Valley, CA
24 companies listed · 7 in Simi Valley · 1 open 24/7 · 8 open weekends · 18 rated 4.5+
Data verified October 18, 2026
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Edm Service
“They are a Top notch Company”
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Rgse Inc. Structural Engineer and Expert Witness
“These guys are the absolute BEST!”
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R M Designs
“Even though he is already done designing our project, his willingness to answer any questions and help us understand the process of construction had been very helpful.”
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Buckeye Surveying & Engineering
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Strcc
Listed for property owners in and around Simi Valley, CA, these 24 companies do engineering work for properties. Listings show the disciplines each firm names on its own website, from structural to civil site work and environmental assessment, with ratings and quotes from public reviews.
Area overview: Simi Valley, CA
7 of the 24 companies we list are based in Simi Valley; the other 17 serve Simi Valley from towns including Woodland Hills (11 mi), Santa Clarita (18 mi) and Camarillo (16 mi). 20 of the companies on this page have a rating, from 4.0 to 5.0 across 289 reviews; 18 are rated 4.5 or higher. The topics that come up most in reviews of the companies on this page are "communication" and "price". 1 is open around the clock; 8 are open on Saturdays and 2 on Sundays. The services the companies on this page list most often on their websites are adu (3), bathroom remodeling (2), kitchen remodeling (2), room additions (2) and seismic retrofit (2). 6 show a license on their websites and 2 have a BBB rating of A or A+. 19 have ten or more years of experience, the longest 38 years. 1 offers emergency call-outs; 1 offers remote or virtual consultations and 4 give free estimates. We have a website on file for 23 of the companies on this page; 19 publish a contact page and 18 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Do any of these firms say they are licensed?
6 of the 24 listings for Simi Valley show a license on their websites. Registration belongs to an individual, so match the name on the seal to the person doing your work, and verify it with the state board rather than trusting a badge on a homepage.
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M & B Consultants & Sales
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James J Hirsch & Associates
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EZ Plans Architects
- Permits
- Planning
- ADU
“A friend of mine had used EZ Plans to remodel a heritage home in Santa Monica and recommended them for their quality design skills and experience in navigating the approvals process, especially the daunting Coastal Commission process.”
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Daniel's Development Group
- Kitchen
- Team
- Design
“I'd highly recommend him to others that are looking for someone who can do quality work (won't be the cheapest, but won't be the most expensive), but will be honest, and also a great friend in the process”
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M&N Home Design
- Permit
- Team
- Garage
“There's guys are fantastic, they do everything from planning to final permits, their design is amazing and they have good connections with the city planners.”
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RZ Engineering Corporation
“I had purchased plans online and he helped get them ready for Building & Safety.”
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Foundation Technology
- Wall
- Retrofit
- Project
“He also offered me valuable advice on how I could mitigate damage to my foundation stabilization problems moving forward that didn't use his company's services, free of charge.”
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Calex Engineering Co
“Very helpful”
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Complete Package Drafting
- Company
- Plans
- Permit
“Ben gave us several options to choose from and was very patient with our edits We had everything ready to go with the city in a matter of months and we are so so happy with the final production.”
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Jay Cad
- Projects
- Team
- Prices
“Professional services by Jay Cad, I can confidently say that Jay CAD exceeded my expectations, and I wouldn't hesitate to recommend them to anyone in need of their services.”
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Flat Rate Remodeling
- Price
- Home
“We recently had an incident while parking our car in our garage, this resulted in our vehicle striking the interior wall resulting in heavy damage to a load-bearing wall.”
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AGS Advanced Geotechnical
“The work was performed on the day scheduled and they were very accommodating when scheduling the date for coming onto our property to perform the drilling and soil sampling.”
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Mike Rovner Construction
- Renovations
- Work
“We appreciate everything you do for us and we hope that many more years of professional relationship will continue between Euro Shine and Mike Rovner Construction.”
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Safe Structural Engineering INC
- Expertise
“High quality detail oriented team”
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Evolving Resources Inc
“Great bunch to work with.”
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Richard Mumper & Associates
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HLS Remodeling and Design
“I initially wanted to do just my kitchen, but it looked so good I eventually did my bathrooms too.”
Civil & Structural Engineering Services in Simi Valley, CA Cost Estimates
Minimum cost
$238
Maximum cost
$1500
National Average
$582
Avg Per Hour Rates
$149
$385
$786
Typical price range is based on 391 cost profiles
Why these companies made our list
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