Cassidy Construction works with a wide variety of customers from homeowners to large development companies. We have built our customer base through consistent quality work and integrity. We believe in doing the job properly the first time to help avoid issues down the road.

Welcome to Cassidy Construction!
Your Experts in Excavation, Grading, Septic Systems and More! 

Cassidy Construction specializes in excavation and septic systems. We provide reliable and professional service for residential, commercial, and industrial clients in London and surrounding area. We offer excavation and grading for all sizes of projects, septic system installation, repair, and inspection, as well as demolition, trucking, and snow removal. Check out our services to see how we can help you!

With over 9 years of experience in the construction industry, we have seen it all. We are licensed to install septic systems in Ontario, and our company is fully insured. Using what was learned in the past, Cassidy Construction will provide you with knowledgable expertise on your next project.



Attention to Detail

Here at Cassidy Construction we put an emphasis on detail. We make sure every job is done safely and efficiently ensuring a successful project. We put all of our attention on your project and focus on providing you with the best service.  

Cassidy Construction will always be honest with you. Family owned and operated, we will recommend a solution that fits your needs and be there every step of the way. Feel free to ask us any questions you have regarding your upcoming project, as we are always upftont and honest.