Taxable value reassessment after adding ADU (San Francisco)

[Harman N.]

Hi all,

How aggressive is San Francisco in marking up the taxable value of a property after adding an ADU?

I've a duplex I bought 2.5 years ago. It's worth more than what I paid for it since I renovated the unit I live in (and prices have gone up since then). If I add an ADU, how would they handle the reassessment --

• Would they only add value for the ADU?
• Would they mark up the value to the current market value and then add the ADU on top of that?
• And how aggressive or conservative are their valuations generally?

Thanks!

- Harman