Is it common, when makIng an offer on a commercIal multIplex, to place a contingency for all of the units to be under lease agreements?

Now, you could make some change here if you can wholesale this as a lease - option .

And it turns out there was a lot of misinformation in the listing and offering.The biggest issue is that the commercial unit, on a newly signed 7-year NNN lease, was supposed to pay for half the real estate taxes, half the maintenance, half the water/sewer.

Single-family home sales rose 9.1 percent year-over-year, with 8,108 units sold;Days on Market (DOM) for single-family homes remained unchanged at 48 days;Total property sales increased 8.5 percent, with 9,559 units sold;Total dollar volume jumped 11.4 percent to nearly $2.8 billion;The single-family home median price rose 5.9 percent to $243,500, reaching a July high;The single-family home average price also achieved a July record, rising 2.4 percent to $305,910;Single-family homes months of inventory was at a 4.2-months supply, down fractionally from 4.3 months last July, but nonetheless at the highest level since August 2017;Townhome/condominium sales rose 6.1 percent, with the average price up 6.9 percent to $215,110 and the median price up 9.3 percent to $165,000;Leases of single-family homes fell 1.9 percent with the average rent up 5.6 percent to $1,916;Volume of townhome/condominium leases dropped 6.6 percent with the average rent up 7.7 percent to $1,666.https://www.har.com/content/mls/?

One tenant of four on the lease moved in on Thursday and moved out Friday saying they did not feel safe in this Nashville  rental.The lease requires 30 day notice plus 3 months rent to terminate lease.

What has bothered me is that with a 12 month lease it is the 13th month that the unit is vacant.

You have to live with that decision under the terms already agreed to in the lease.

I only ask because my car got booted a month ago without warning for vehicle registration and it's the primary reason I'm moving out as soon as the lease is up. 

@Claudia Everett, foreclosures happen in all markets and in all neighborhoods (however some more frequently than others).

but your right real estate can be transacted between parties don't need a lawyer or title or escrow company or agents or lenders or anyone but the two parties.. when foreclosure rescue lease back in our state was legal I did a ton of it.. and there simply was no time to involve anyone.. when the seller decided at 10am on Wednesday they needed to take Massive action and their foreclosure was scheduled for the next morning..