Licensed #1005325 7453 Woodley Ave, Van Nuys, CA 91406 Serving Los Angeles & Orange County Top Rated on Google
Licensed #1005325 · 40+ Years · 8-Year Warranty

Trusted Waterproofing Contractor in Hidden Hills

In Hidden Hills you need two approvals, not one, and missing the second one is what stalls jobs.

Local Waterproofing Experts

Two Approvals Before Anyone Picks Up a Tool

Most work that needs a city building permit in Hidden Hills also needs Architectural Approval. Starting construction without prior Architectural Committee approval, or building something different from what was approved, will likely result in a Stop Work Notice and a Board hearing. That is where homeowners here get into trouble, so we work the sequence in the right order and a deck rebuild does not get stopped halfway.

The city sits in the southern Simi Hills near the Santa Monica Mountains on the western edge of the San Fernando Valley, close to the Ventura County line. It has 635 housing units, 593 of them occupied, and just over 90 percent of those are owner occupied. Large single family properties, so long spans, elevated terraces, and surfaces that are part of how the house looks.

Hillside lots put the drainage question first. A terrace that sheds over its edge onto the slope below is contributing to a problem rather than solving one. We settle where the water is collected and discharged, then build the waterproofing to serve that plan.

Long spans also move. A terrace of any real length expands and contracts daily, and that movement concentrates at the joint at the house, the railing penetrations and the edge. Detailing those for movement, rather than sealing them and hoping, is the difference between a surface that lasts and one that opens up in its third summer.

Appearance carries weight on these properties. Finish, color, texture and how the edge is trimmed get decided before the first day.

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Our Services in Hidden Hills

Waterproofing Services We Provide in Hidden Hills

Deck Waterproofing in Hidden Hills

Durable waterproof coatings that protect walking decks, roof decks, and balconies from water intrusion.

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Balcony Waterproofing in Hidden Hills

Code-compliant balcony systems that stop leaks, dry rot, and structural damage before they start.

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Stair Waterproofing in Hidden Hills

Slip-resistant, weatherproof coatings for exterior stairs and landings that last for years. We also design and fabricate custom iron based precast staircases for minimal maintenance.

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Magnesite Decking in Hidden Hills

Expert magnesite repair and replacement to restore worn, cracked, and failing deck substrates.

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Commercial Waterproofing in Hidden Hills

Waterproofing for apartments, HOAs, and commercial properties, built to pass inspection and last.

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Permit Experts in Hidden Hills

We work with Building & Safety departments in every city we serve, handling permits and inspections from submittal to final sign-off.

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Permits & Inspections

Pulling a Permit in Hidden Hills

Hidden Hills contracts its building function out. Transtech, under contract with the city, provides Building and Safety, Planning, City Engineering and Public Works, and Environmental Services, so plan check and inspection run through Transtech on the city's behalf. The Architectural Committee approval sits alongside it, and we assemble both packages rather than pulling the permit and finding the committee has not signed off.

Common Issues We Fix

Waterproofing Problems We Solve in Hidden Hills

Why Choose Us

Why Hidden Hills Trusts Capital Deck & Stair

40+ Years

Decades protecting LA & OC properties.

8-Year Warranty

Guaranteed, long-lasting workmanship.

Local & Licensed

Licensed #1005325, serving Hidden Hills.

Free Estimates

Fast, no-obligation local quotes.

Nearby Service Areas

We Also Serve These Areas

FAQ

Waterproofing in Hidden Hills: Your Questions

Do I need HOA approval as well as a city permit?

Almost always. Most work that needs a City Building Permit also needs Architectural Approval, and starting without it, or building something different from the approved plans, will likely draw a Stop Work Notice and a Board hearing.

Who actually does the plan check?

Transtech, under contract with the city, provides Building and Safety, Planning, City Engineering and Public Works, and Environmental Services for Hidden Hills. Plan check and inspection run through them on the city's behalf.

Why is drainage the first design decision here?

The city is hillside ground in the southern Simi Hills. Water shed off a terrace edge soaks into the slope below. We decide where it collects and discharges first, then waterproof to serve that.

How long does waterproofing last?

A professionally installed waterproofing system typically lasts many years. Capital Deck & Stair backs most projects with an 8-year warranty on workmanship, and proper maintenance can extend the life well beyond that.

How much does waterproofing cost in Hidden Hills?

Cost depends on the surface size, condition, and the coating system required. We provide a clear, itemized quote after a free on-site inspection, with no obligation and no pressure.

How long does the job take?

Most residential decks, balconies, and stairs take about a week from start to finish, depending on prep, repairs, and weather. We give you a firm timeline before work begins.

Do you work with HOAs and commercial properties?

Yes. We handle residential, HOA, and commercial waterproofing across Los Angeles and Orange County, and we are licensed (#1005325) and insured for projects of every size.

Free Waterproofing Quote in Hidden Hills

Protect your property before the next storm, talk to a local expert today.

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