Newz: ADU vs. Two-Family Property,
Everyone Must Be Ready for UAD 3.6
November 21, 2025
What’s in This Newsletter (In Order, Scroll Down)
- LIA: Protecting My Appraisal Report
- How to Identify a Single-Family with ADU vs. Two-Family Property
- $1 Million Midcentury Modern Ranch House on Lake Michigan Holds a Wild Surprise in the Basement
- Top Appraisers Advise on How to Generate New Business
- When One Bulb Fails… Why Everyone Must Be Ready for UAD 3.6 By Tony Pistilli
- A Real Estate Agent’s Guide to Understanding the New UAD 3.6 Appraisal Report By Tom Horn
- MBA: Mortgage applications decreased 5.2 percent from one week earlier
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How to Identify a Single-Family with ADU vs. Two-Family Property
Excerpts: Across the country, accessory dwelling units (ADUs) are becoming more common. Cities and counties are updating zoning laws to encourage them, whether to increase housing supply, create affordable rental options, or allow families to live closer together. Appraisers need to understand how ADUs fit into their local markets, how they’re used and perceived, and how to properly distinguish them from true two-family properties.
The presence of an additional living unit can complicate the appraisal process by making it difficult for you, the appraiser, to know how to classify the subject property. How do you know whether you’re dealing with an accessory dwelling unit (ADU) or a second unit? In this article, you’ll learn about ADU meaning and types as well as how to identify a single-family with ADU vs. two-family property.
Topics include:
- What Is an ADU?
- Do ADUs Add Value to a Property?
- Types of ADUs
- What Is a Two-Family Property?
- Is It a Single-Family with an ADU or Two-Family Property?
To read more and watch an ADU video, Click Here
My comments: Good explanations of ADU issues. Well done short video. UAD 3.6 requires including details on ADUs.










