@Adam Nelson - Seems like I'm echoing what everyone else has suggested on here, but I'll provide a little context based on recent reports.
Based on recent Realtor data for April in Middle Tennessee, there's a few points that should provide quite a bit of optimism. First and foremost, there were 3,479 home closings in the month of April, which is a record high for the month. With this record high number of closings, the median price for both single-family homes and condos grew 4.1% and 3.3%, respectively. Inventory is indeed up compared to last year, but Nashville is still under 3 months of inventory. Anything under 4 months is commonly understood to be a sellers’ market. Closings and median prices up along with inventory that represents a relative shortage definitely doesn't line up with a cool down.
An additional indicator to consider is that real estate direct-buy proptech companies such as REX, Knock, Opendoor, Offerpad, and Zillow (to name a few) have already raised $1.9 Billion in investor funding this year. Several of these firms are either already buying in the Nashville market, or are positioned to sometime within 2019 to 2020. These firms tend to not necessarily position their operations in markets where margins are the widest, but rather in markets where their exit of the property is the quickest and most ensured.
Again, I thought it would help to provide some constructive data to what everyone else on here has always pointed to. I've been active in the REI space in a couple markets now (only operating in Nashville currently), and there are always folks who are waiting for the next cool down - arguably, at some point they will inevitably be correct, but that doesn't appear to be anytime soon in Nashville. Amazon and Alliance Bernstein were the biggest announcements of new firms coming to town and are supposed to bring a combined 6,000 new jobs to the area with an average pay of $100k or more - as it stands, those jobs have yet to arrive. So, the growth in closings and median prices we've experienced as of late is still not indicative of what is to come.
Happy Investing!