Advance Technical Services (ATS) is a specialty consulting and inspection firm serving HOAs, property managers, and developers across California. We specialize in exterior envelope compliance and reconstruction services for decks, balconies, walkways, and handrail systems.

Led by field-tested professionals and backed by our in-house manufacturing and construction teams, ATS bridges the gap between inspection reports and real-world repairs — helping you meet compliance, reduce liability, and extend the life of your exterior systems.

What Makes ATS Different

Over 20 years in structural waterproofing & exterior systems

 SB 326 & SB 721 inspections — visual & invasive

 Resale clearance reports included in our Maintenance Program

 Full-circle partner: inspections → engineering → project management → repair

 In-house waterproofing + custom metalwork railing systems

 Backed by trusted sister companies: High End Development & Advance Flooring Products

Our Services, Your Safeguard

• FREE - Initial Walk & Consultations
• SB 326 & SB 721 Compliance Inspections
• Structural Consulting & Risk Mitigations
• Detailed Photo Documentation Reports
• Project Oversight for Deck & Balcony Repairs

• Waterproofing System Review & Recommendations
• Maintenance Program, Design & Engineering Referrals
• Legal-Ready Reporting for Property Managers, HOAs, and Builders

Built On Trust. Backed By Experience.

Advance Technical Services ("ATS") is a California-based consulting and inspection firm backed by over two decades of real-world expertise in decking systems, waterproof coatings, and exterior structure repairs.

Led by founder James “Jim” Metzger, a veteran in structural waterproofing and construction management, ATS helps HOAs, property managers, and developers navigate SB 326 & SB 721 with precision, not panic.

ATS is proud to operate alongside its sister companies—High End Development (HED), Northern California’s trusted specialty contractor for structural waterproofing and exterior restoration since 2006, and Advance Flooring Products (AFP), a U.S.-based manufacturer of premium decking systems and coatings. Together, we offer clients a turnkey solution: from inspection and compliance to repairs and product manufacturing—delivered with integrity, expertise, and seamless execution.

What Makes ATS Different

Why Builders, HOAs, and Property Management Firms Trust ATS: We're the field-tested experts in waterproofing and deck safety - long before SB 326 and SB 721 became law.

20+ Years of Specialized Field Experience

We're not just inspectors - we're industry veterans with a proven track record in designing structural decking systems, waterproofing, coatings, and construction management.

FREE Initial Onsite Walk & Consultation

One of our experts will meet you onsite, review your elevated exterior systems, and provide you with a professional opinion and inspection offer -  at no cost and with no pressure or commitment.

Actionable, Compliance-Ready Reports

Our inspection reporting is developed by a seasoned team - including engineers specializing in SB 326/721 compliance, designed to simplify complex repairs, budgeting, and next steps.

Turnkey Solutions From Inspection to Oversight

Whether you need consulting, expert witnessing, contractor coordination, or other ongoing inspection support needs,  ATS delivers end-to-end service.

Our Maintenance Program

Think of it as your long-term protection plan — designed to preserve your investment and prevent costly failures. Our ongoing program ensures your property remains compliant, safe, and fully documented year after year.

Included Services:

• Scheduled inspections & reporting

• Minor maintenance & system upkeep

• Warranty tracking & documentation

• Resale clearance reports for property transfers

• Peace of mind backed by field-proven waterproofing and railing solutions

Ready to Get Started?

Complete the form below to schedule your free SB 326/721 walkthrough or to speak with one of our experts- no pressure, just guidance you can trust.