Hey @Dan H. thanks for the response. I see you're right up the road from me in Poway. Are you familiar with this kind of valuation happening in San Diego? If I was in West Virginia (no offense), I might expect this kind of value out of an ADU. But as you know, San Diego prices are sky high. I'm trying to figure out how my main house can get 100% of the value per sq ft, but the attached ADU only get 15% of the value.
That's the other thing, the appraiser didn't used a single comp with an ADU. All of his comps were single family homes without ADU. His comps were 0.4, 1, and 1.5 miles away from my house. I provided the VA with comps that had ADUs 2.6, 2.7, and 3.6 miles away. Obviously not as close, but the comps right next door are not an equal comparison as they don't have an ADU. I thought the point of comps were not only to find the closest properties, but also to find ones as similar as possible. Not sure why the appraiser didn't use comps that had ADUs. In this San Diego market if you have (2) houses over a million, one with an ADU and one without, the one with ADU is getting way more than 35k on top of the one without.
Most people who spend over a million bucks on a house love the idea of being able to offset their mortgage through a cash flowing ADU.