Engineering Services
Delivering comprehensive engineering solutions for your construction projects.
Engineering
Structural, Civil, Sustainability, & Energy Consulting.
QA/QC & Inspections
Thorough inspections ensuring quality and compliance.
Excellence in Engineering
Lessani is a Washington, D.C. based firm specializing in engineering and technical review, dedicated to delivering high quality services throughout the project lifecycle with a hands on approach.
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Local Small Business
Lessani is a proudly local, certified small business based in Washington, D.C., with deep roots in the community and a strong commitment to public service and infrastructure improvement. As a Certified Business Enterprise (CBE) and HUBZone certified firm, we bring both regional insight and federal credentials to every project we undertake.

DC Local Small Business
Certified by DSLBD
Certification Categories by DSLBD:
SBE, DBE, LBE, DZE, ROB, EIE

HUBZone Certified
U.S. Small Business Administration
Federal set aside eligibility for contracting opportunities reserved for HUBZone certified firms.
Our Projects
Explore our diverse portfolio of successful engineering projects.




