The rental market is okay, just very saturated due to the limited supply of homes for sale.

Personally in denver it’s super saturated and hard to rent room due to the amount of supply.

Supply is so tight, they need temp space that will give them time find and close on their purchase.

No.  10% - 20% (depending in various criteria) will need to be supplied. 

It also has seen a lot of building increasing supply.

You can examine the number of available properties, search trends, and the ratio of demand to supply.

Additionally, the record number of apartment unit deliveries in recent years has led to increased supply, putting downward pressure on prices, occupancy rates, and rent growth.Operational costs have also been on the rise, further complicating the financial outlook for multifamily properties.

Also have an understanding of housing demand versus supply for houses and apartment rents (I wish I considered those factors when buying my first home).Also, make sure you understand debt financing and you spending time modeling out your costs. 

I have 30+ years of corporate finance experience; FP&A, Supply Chain Finance, new business ventures, tech infrastructure investments, and entertainment.

I supply paper products, coffee, hand soap and cleaning products.