Who We Are

About McMahon Engineering

Founded in 2015, McMahon Engineering is a family-owned and operated company providing high-quality shoring and drilling services across Southern California. With extensive experience in residential, commercial, and municipal projects, we deliver safe, cost-effective, and reliable foundation solutions designed for long-lasting results.

Our Capabilities

McMahon Engineering offers a full range of foundation construction and earth retention services, including:

• Anchor Systems – Soil nails and tiebacks for wall reinforcement and slope stability.
• Beam & Lagging – Soldier pile walls using steel H-piles with timber, steel, or precast lagging.
• Beam & Plate – Driven steel I-beams with plate walls for earth retention.
• Cast In Drilled Holes (CIDH Piles) – Also known as caissons or drilled shafts, providing deep foundation support.
• Custom Foundation Drilling – Tailored drilling solutions for challenging ground conditions and unique project requirements.
• Pile Driving – Driven pile foundations using diesel hammers, hydraulic hammers, and vertical travel lead systems.
• Sheet Piling – Interlocking steel sheets for retaining walls, cofferdams, and excavation support.
• Underpinning – Strengthening and stabilizing existing foundations with beam and base underpinning, mini-piles, and more.

Certified and Trusted

As a registered Small Business Enterprise (SBE) and Women’s Business Enterprise (WBE), McMahon Engineering is fully certified with the California Department of Industrial Relations (DIR). We are committed to meeting the highest standards of quality, compliance, and workplace safety.

Family-Owned Dedication

Every project we take on receives personal attention, strict quality control, and outstanding performance. Our reputation has been built on trust, expertise, and a genuine commitment to our clients and the communities we serve throughout Southern California.