Unless you're in  weird state like California where the tax assessed value usually mirrors the latest sales price, plus a small adjustment for each succeeding year.

If they are very close it's easy, but when I have to account for differences I don't know how much to adjust, I feel like I'm just guessing. 

Indicators like diverse employment, rising wages, not easy to build (but currently constantly getting easier), housing shortage, low vacancy rates, great climate, etc. point to the high appreciation CA cities having continued long term appreciation (market and rent).I hinted at the state level movement to increase housing.

Based on the two, I'm not sure I'd do it; but I live in a colder climate and admittedly am resistant to change.

If they want a year over year increase, look to see if they adjusted your coverage up?

That said, I suggest checking the competition and adjusting your fees to be competitive.

We bought “below market”, but I just showed him the settlement statement and they adjusted their valuation.

We are thinking about cash out refin on all of our properties since most of them have very high % equity in them and along with holding off of any investment now so we can have a large sum of capital to buy when the market adjust itself.

So, while all properties went up in value, mine was adjusted downward to be comparable to those around me.

Long term success in business, any business, is based on the ability to adjust.