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Founders

Founded by a Nora and William Feyl, our company brings together over 20 years of hands-on experience in the field and a proven track record of successfully managing multimillion-dollar projects.

Nora's role in our company is pivotal, as she brings her wealth of experience in business management and client relations to the forefront. With a keen understanding of the industry landscape and a proven track record of building strong relationships, Nora ensures that our company not only secures projects but also exceeds client expectations at every turn. Her strategic vision and leadership are instrumental in driving the success and growth of our business.

With over 20 years of experience in civil and mechanical construction, William, the Principal of Ailm Underground is a results oriented estimating and cost engineering leader specializing in gas, energy, and underground utility infrastructure. He has led estimating efforts for major utility clients including SoCalGas, SDG&E, PG&E, Black Hills Energy, FP&L, and NiSource, supporting project budgets for large-scale multi-million capital programs.

His background spans estimating leadership, field supervision, and ownership of an underground utility contracting firm bringing a rare, end-to-end understanding of construction means, methods, and risk.

An AACE member and Class A licensed contractor in the State of California, he combines technical rigor with real-world constructibility, providing clients with clear cost insight and value engineering options.

Project controls for the infrastructure that powers millions.
Independent cost engineering for gas, energy, and underground utility projects. We deliver defensible estimates, risk-aware budgets, and bid strategies trusted by utilities and prime contractors. With Ailm Underground, your project is not just a job, it's a partnership forged in the depths of innovation and excellence.

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