W. M. Zondorak, General Engineering Contractor

PHONE: (619) 261-0687

Free Proposals with Site Visit

Underground Contracting Work

Engineering Sitework, Sewer Lines, & More

You can't afford any less than the best sitework and excavation professional for your drainage, sewer, or septic project. Call or text W. M. Zondorak, General Engineering Contractor for a prompt response and assessment of your needs. We do it all at affordable prices.

Retrofit Ductile Iron Pipe

Sewer Pipes


Transform your residential or commercial property with our clearing and grading services. We provide general engineering sitework services and the demolition of buildings, curbs, gutters, or driveways. Our team is experienced in performing the complete clearing of sites, eliminating brush or buildings in the process. From grading of streets to installing house or building pads, count on us.

Sewer Lines

Precision is paramount when digging new sewer lines. Certified by the County of San Diego, W. M. Zondorak, General Engineering Contractor is available to dig any needed sewer lines, as well as storm drains. In addition, we are certified gas line installers.

Our team also specializes in the certified installation of new septic systems. We install Presby systems, which leave a much smaller environmental footprint than an average septic system. From installing a leach line to digging a vertical pit, we're available to make your septic installation easy.

Curbs & Gutters

Call us when you need curbs, gutters, or sidewalks for new construction or a property renovation. Our crews have years of experience, and there are very few issues we haven't dealt with.

Equipment Rental

Contractors, companies, and individuals may require some specialized equipment from time to time. We have bobcat loaders, skid steers, and mini excavators available to rent. Contact us to learn more.

Gal Tank Installation

CA Contractor License 327534 A HAZ