From an economic perspective, the income tax changes passed in late 2017, particularly the virtual elimination of the State and Local Tax deduction (SALT) for high earner households, along with continuing reductions in the mortgage interest deduction, should have had an immediate, negative impact on house prices in high tax states such as Oregon and California. I didn't see these effects, but changes in the housing market take a long time to appear, because many transactions are already under way and sellers will hang on in the market rather than taking a perceived "hit" to the value that they expect to receive.
It looks like the market, in Portland at least, has crested and is (likely) to proceed in a downward direction. From an article in Bloomberg titled "The US Housing Market Looks Headed for It's Worst Slowdown in Years"
Dustin Miller, an agent with Windermere Realty Trust in Portland, said he’s trying to manage sellers’ expectations, something he hasn’t had to do since the end of the last housing boom. One customer, a baby boomer moving to a new home across the state, expected to have buyers fighting over her house. She got one bid, below her asking price. “Buyers want to shop and take some time, as opposed to having to rush and throw offers in,” Miller said. “It’s the market correcting itself. At some point, you hit a peak of momentum, and then things level off.”The real estate agent refers to this as moving from a 'peak' to 'leveling off' and we will see if this moves to a prolonged rout, like we had back in 2008-9. It will also be interesting to see if real estate in high tax states doesn't bounce back as fast as real estate in states with lower tax rates, but we won't be able to see the net effect of this for many years (and it is but one variable among a sea of variables).
I have a semi-sad theory about this - I don't think folks understand the impact of the changes in tax laws until they file their taxes. Whether due to complexity (it is hard to model just a couple of variables in a tax program unless you know what you are doing) or a lack of financial acumen, I believe that after 2018 taxes are filed in the middle of 2019 you will start to see more of a "wealth effect" as home owners start to realize the potentially large impact of the changes to the SALT deduction.
As I look out my window in Portland I hope that they complete the high rise buildings that they are working on, and don't break ground on new ones. We used to look at partially completed buildings for many years in Chicago after the 2008-9 crisis, until they finally completed them up to 5 years later.
Cross posted at Chicago Boyz