Security Deposit Return Before Move-In Date

[Abby Holland]

I had a unit come available March 7th. I had applicants within a few days. They gave me a deposit on March 13th but didn’t sign their lease right away for an April 1 move-in. They asked to push the date to mid April tentatively due to covid-19 which I agreed to do (still no signed lease). They just informed me today that they won’t be taking the unit.
It’s now been vacant nearly a month and I’ve put it back on the market with someone viewing it as I type this (someone else is showing for me). 
I wouldn’t normally hold a unit without a signed lease but quarantining started around the time the new tenants would have signed so I was willing to work with them. That said, do I have any recourse with their deposit? I’ve already gotten 3 messages to view the unit in only a few hours so people are still looking and moving during the pandemic, but my largest and most expensive unit has been sitting vacant longer than it presumably would have, pandemic or not. 
I’m not looking to be greedy but like the rest of us, this hurts my pocketbook too.