Serving Ronkonkoma, NY and surrounding areas
Approved
In business since 2004
Free estimates
Customers say: Quality work
"Provided a thorough analysis of the structural design, and provided a professional report to our architect."





*The Angi rating for Structural Engineering companies in Ronkonkoma, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.
*The HomeAdvisor rating for Structural Engineering companies in Ronkonkoma, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.
Last update on July 09, 2025
Serving Ronkonkoma, NY and surrounding areas
Approved
In business since 2004
Free estimates
Customers say: Quality work
"Provided a thorough analysis of the structural design, and provided a professional report to our architect."





Serving Ronkonkoma, NY and surrounding areas
In business since 1997
Free estimates
Emergency services offered
"Frank is very thorough and professional. Would highly recommend him as a structural engineer. If the need arises, I would not hesitate to hire him again."

Serving Ronkonkoma, NY and surrounding areas
In business since 1997
Free estimates
Credit card accepted
"After hurricane sandy in 2012 a lot of people in Brooklyn and Long Island got flooded a lot of home owners received flood damages or lost their property due to Hurricane Sandy... I am living on Cony Island Seagate area at that time I was home with my Family and how a remember the water came up to my house and flooded my basement and first floor of my house... I was very scared and desperate.... We basically lost everything at the first and basement floor...
We have received some help from FEMA like every homeowner in that area but the rest was huge loss from our pockets...
We found structureline based on recommendations and we started to do renovation...Nicholas the General Manager helped us out to apply for a small loan so we could begin the renovation...We needed to do a complete house renovation ....
They took off the walls in the basement and 1st floor, they did mold disinfection, replaced all drywall's, wiring, boiler, windows, doors, siding etc..
They did remodeling on the master bathroom from the first floor and kitchen, they did a wonderful job...We love their new engineered Hardwood floor and the new design of the bathroom with the big bathtub and shower cabinet ... The price we spend ed was a little higher than we were expected because we did some design work in the living room and Kitchen but for sure it worth it....If Someone will ask me for a recommendation for sure I will recommend Structureline because they helped me out at that time ....Thanks"

Serving Ronkonkoma, NY and surrounding areas
In business since 1986
Free estimates
Warranties offered
"The town required structural drawings for the retaining wall around my pool and after speaking with and getting estimates from several Structural Engineering companies choose Magnus Engineering. The company was responsive and willing to provide the service quickly. James Strizki was the engineer; he was professional, patient and reassuring. He continued to follow-up even after receiving payment until I had the final inspection. They were reasonably priced and delivered the required signed sealed documents allowing me to finally close out the permits that were pending from the year before."





Serving Ronkonkoma, NY and surrounding areas
In business since 2013
Free estimates
"I am SO HAPPY with the floor plans Gregory did for me. Prior, this had been such a hassle for me trying to get floor plans done for my rental property. Gregory was very patient with me and my many questions. The house is very old with so many corners and small areas. He was prompt and professional. I will definitely recommend him and call him when this type of service is needed"





+26

Serving Ronkonkoma, NY and surrounding areas
In business since 2019
Free estimates
"Peter Reynolds provided professionalism and his expertise on work plans were very impressive had my building pass inspection. I highly recommend his company as he helped me through getting building codes passed and layout of blue prints .. he also corrected some Structual issues on my a garage shop which were overlooked by previous contractor .."

Serving Ronkonkoma, NY and surrounding areas
In business since 1999
Credit card accepted
Offers commercial services
"Excellent structural engineer. Experienced! Very responsive and addressed all of my issues and was easy to work with. I needed calculations and drawings done, signed and sealed for two retaining walls. Needed to submit these documents to the town and DEC. Samir took care of it!"





+1
Serving Ronkonkoma, NY and surrounding areas
In business since 1996
Free estimates
Credit card accepted
"I was so happy with their performance. It was high quality, and very professional. If anyone needs a company for structural repairs, then I recommend calling N&A Contracting Inc."





+3
Serving Ronkonkoma, NY and surrounding areas
In business since 2004
Free estimates
"They were great, they were fast and everything came out how we wanted."

Serving Ronkonkoma, NY and surrounding areas
In business since 1997
Free estimates
Emergency services offered
"1. Fusion was able to use tile we had on had for the floor tile which saved us money on the overall job.
2, New tile floor is a significant improvement over the original tile floor in both look and functionality.
3. Fusion contractor explained each step of the renovation in detail so we would understand what was being done but why.
4. He was open to our questions and requests as the project proceeded.
5. Fusion cleaned up the work area daily.
6. The newly installed fixtures, toilet and light are working with no issues over a month after completion. No leaks or other issues observed."





+4
From average costs to expert advice, get all the answers you need to get your job done.

Do you have a load-bearing wall standing between you and your projects that you want to remove? Learn about the cost of removing a load-bearing wall.

Beam installation costs are an important consideration if you’re building a home or doing renovations. Learn about average costs and factors in this guide.

The cost of a structural engineer is easily justifiable given the value they bring to the table. Use this guide to see what hiring your professional will total.

What is an LVL beam? Read about LVL beams to determine if this material is safe and suitable for your project.

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Knowing the difference between structural inspections vs. home inspections is easy with this convenient guide. Learn when you might get each one done.