SB 326 Balcony Inspection Coordination Specialists * Building Envelope Consultants * Quality Assurance Inspectors * Leak Investigations

Watch our quick intro to William Leys Waterproofing Consultants LLC

I was one of the first inspectors to offer deck inspections to HOA’s starting way back in 2007, after being approached by an HOA management companies senior executive.

My first inspection was on an apartment to condo conversion project in Walnut Creek called The Montecito. Since 2007 I’ve personally inspected thousands of EEEs all over California.

Since opening William Leys Waterproofing Consultants LLC I’ve helped homeowners, condominium HOA’s, commercial building owners, architects and engineers solve water intrusion problems, assist with building envelope design issues and  performing construction defect investigations throughout California.

With over 21 years of experience, I have consistently set the bar in performing deck, roof and building envelope inspections for hundreds of clients throughout California.

William Leys Waterproofing Consultants LLC is free of conflicts of interest, maintains high ethical standards and regularly attends continuing education classes related to building envelope concerns.

President Bill Leys performing quality assurance inspections at Stanford Hospital in Palo Alto in 2019.

I invite you to browse our website and learn more about our services, including coordinating balcony inspections & performing waterproofing observations for HOA’s under SB 326, leak investigations and leak testing, property condition assessments and quality assurance observation services. Be sure to visit our articles page to download our articles that have been published in JLC Magazine and other publications.

William Leys Waterproofing Consultants LLC is ready to help get your building envelope problems fixed at a cost that’s friendly to your budget with our affordable expertise!

We are fully insured with General Liability, Errors and Omissions and Workers Compensation insurance.

Call today for a free conversation on your building issues and let’s see if I can help! The phone lines are open at 805-801-2380.

Giving back to our community! You can find Bill volunteering at the Habitat for Humanity’s Restore at 2790 Broad Street in San Luis Obispo! Since July of 2025 through September of 2026, Bill Leys volunteered over 200 hours of time!

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Helping keep buildings dry and people healthy!