The Bay Area is affluent so I don't see the foreclosures hitting the market doing a significant dent, and even with work from home a lot of the companies would still prefer for individuals to come in as COVID settles down so I wouldn't predict a significant drop in demand and a huge influx of supply. 

Due to the lack of supply of homes on the market during COVID, there was a bidding war (which I thankfully won!)

Supply is very limited, and pricing has increased because of the lack of supply.

For instance, you can say something like we can provide you a supply of water and some refreshment once a month.

Given the downward pressure that social distancing regulations, shortages of labor, and supply chain issues continue to exert on new construction, do not expect an oversupply of homes anytime soon.

I have the same dilemma in Toronto, I feel more confident going after a run down home in an area that I think will have greater appreciation due to the limited supply of land and detached homes, and on the upside rental homes are more scarce than condos (in Toronto) so I know i won't have much trouble renting it out.   

.  not sure if supply was great and demand was low.

Just leave the extra supplies and linens in the owner's closet and I'll pick them up.You've been great to work with and I'm open to working together in the future, too. 

With the large supply of new builds coming on the market at least in the near term, how would that impact the value of a new build I purchased now?

The only way for the equity and other asset classes to lose value rapidly is either the stop of liquidity (bank stop landing, people stop buying, or massive default) or all of sudden the money supply shrank due to governmental action like raise interest rate rapidly, etc.