L.K. McLean Associates
“Their dedication to their community and their clients are above any other firm.”
Best Civil, Structural and Environmental Engineers near Brookhaven, NY
1 of these companies is based in Brookhaven; the others serve Brookhaven from towns including Miller Place (7 mi), Bohemia (9 mi) and Ronkonkoma (9 mi).
1 open 24/7 · 4 open weekends · 12 rated 4.5+ · 2 show a license
Data verified October 16, 2026
Passarelli Engineering
“I would not hesitate to call him again if I had an occasion to require the services of an engineer and would highly recommend him to anyone else who does.”
Pacifico Engineering
“Pacifico Engineering is my go to engineer for structural and sanitary design.”
Greentauk Engineering
“They are the absolute best and the knowledge mixed with the willingness to make sure they check everything is incredible.”
Key Civil Engineering
“Great work and a pleasure to work with!”
J. R. Holzmacher P.E.
Listed for property owners in and around Brookhaven, NY, these 15 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: Brookhaven, NY
The 15 companies on this page are rated from 4.1 to 5.0 across 54 reviews; 12 are rated 4.5 or higher. 1 is open around the clock; 4 are open on Saturdays and 3 on Sundays. 2 show a license on their websites and 1 lists staff certifications (ASHI). 8 have ten or more years of experience, the longest 28 years. 2 offer emergency call-outs and 3 give free estimates. We have a website on file for all 15 of the companies on this page; 13 publish a contact page and 12 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?
2 of the 15 listings for Brookhaven 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.
Miller Proctor Nicholas
CS Design and Development
“CS Design and Development provided high quality drafting services and fast turnaround time for our residential site/civil project.”
New York Building Technology Group
“As first time “new construction” homeowners, NYBTG made the process extremely easy as they guided us through every step of the HERS rating process.”
Cavalry Engineering
Craig M Lehat Land Surveyor PC
Greenworks Energy Specialist
D'Amaro Engineering & Surveying
FPM Group
Emtec Consulting Engineers
“A trusted and reliable partner and vendor.”
Why these companies made our list
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