BILL WALTENBAUGH

Chief Appraiser

With over three decades of industry expertise, Bill brings a wealth of leadership and innovation to NAN. His commitment to excellence and passion for industry evolution will drive NAN's continued growth and service enhancement.

Don't Miss Our Upcoming Appraiser Webinars

NAN is partnering with the industry’s leading appraisal software companies to bring you a series of educational webinars.

UAD 3.6 and SFREP

Tue, Sept. 16, 2025 2:00 PM – 3:00 PM Eastern Time


UAD 3.6 and Aivre

Tue, Sept. 23, 2025 2:00 PM – 3:00 PM Eastern Time

  VIEW PAST WEBINARS

"UAD 3.6 and Freedom Appraise"

• Understand what’s changing with UAD 3.6 and why it matters
• Explore how the Freedom Appraise platform is adapting to support these updates

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"UAD 3.6 and a la mode Solutions"

• Understand what’s changing with UAD 3.6 and why it matters
• Explore how a la mode’s TOTAL platform is adapting to support these updates

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"UAD 3.6 and ACI Solutions"

  • Learn about key changes impacting your appraisals

  • Discover how ACI’s software solutions simplify appraisal report writing 

  • Receive an exclusive discount coupon code for attending

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"Beyond the 1004 – Advanced Techniques for Today’s Non QM Appraiser"

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“Navigating Fannie Mae's Latest Updates”

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"Unlocking New Revenue: Master NAN’s Short-Term Rental Analysis Form"

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"Insights from Fannie Mae's Quality Insider May Edition"

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"ROV Revolution: How New Policies are Shaping Home Valuation"

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