Both tenants just moved out.I just got a bid to correct the foundation the right way by the most reputable company I could find (full underpinning, 60+ piers) ~$65k, plus costs of repairing drywall, paint, vacancy, and new flooring.

Every time I hear about property warranties, it is when something major goes wrong, and the tenants are complaining (rightfully so).

Quote from @Damon Silver: Can you clarify "you can't have another separate tenant live there?" 

You can't compare owner occupied to tenant occupied. 

Cash buyers & investors are also skiddish due to the increase in crime as well as DC’s crackdown on AirBNB’s and tenant/friendly TOPA policies.

With current interest rates (at least in Canada and guessing the US is similar), you'd be further ahead investing that money elsewhere and continuing to let the tenant pay down the mortgage with their rent. 

Most landlords wait until the tenant stops paying rent before learning how to deal with it, and they are always behind the curve.

I got a tenant two weeks after closing.

However, if you made the property available for rent in 2024—meaning you actively advertised it, listed it, or had it ready for tenants—you may be able to deduct certain expenses like mortgage interest, property taxes, maintenance, and depreciation for that period.

@Simon PoweMultifamily will generally have higher turnover than single family and it can also be a bit higher maintenance since the tenants seem to take less care of the units.