recently there has been a boom of new building in my area and I do not even have to do the demo to get a new builder to buy the property, and at really good ROIs.

But the construction of real estate properties is booming... really.. it's amazing... specially the commercial condominiums.. for business purposes..

On top of that you've got all the schmo's out there convincing people to rent 100's of houses and sublease them as Airbnb's....Good God that's a ticking time bomb............And it just went BOOM!

I also recommend you study past and present economy and fiat currency (good lord, this is boring to me, but so important), to better understand what's happening and where our economy is going- as it will help you invest wisely, and understand crash/boom timing.

I understand that people from bay area moving here but its a short term relocation until the boom gets burst then people will go back to craziness again. 

Assuming your tenants pay for electricity, boom, they pay for heat, and they can have their apartment at whatever temperature they want.

Not a good sign as construction is booming so they should be flush.

I have lived in the Bay Area since 2000 and have seen the dot com boom and bust, the 2007 RE boom and bust and the unprecedented 2010 to 2020 bull run both in the RE and the stock market.In my opinion, so far the Bay Area has been a juggernaut mainly due to the innovation and jobs, with Covid and many companies providing flexible/remote working options, the demand for housing “can” decrease a bit in the bay area but it is not fully clear yet by how much.

Boom.

With SFH's and all the up-zoning happening in Seattle you may be able to build additional units on your lot as prices continue to rise and the ROI for those kind of activities increases.Condo's, as lower priced assets, tend to be more volatile - they'll get hit harder during recessions and often rise higher during booms.