The only problem was doing nonproductive activities.

For example, deductions on Schedule E might impact passive activity loss limitations or eligibility for certain credits.

For example, we have a multifamily deal in the boroughs where the contract rider specifically states if the owner cannot deliver the property by X date, the purchaser can back out with their deposit.If you have some flexibility on the contract, you could continue shopping active deals as backups.

Do I need to provide a notice to Tenants that I will be on the property doing maintenance if I do not need to enter any active tenants unit?

I don't use the rent zestimate for the property itself, I look at neighboring properties that are actively for rent.  

@Adam Peralto More & more owners are posting here on BP about their rentals sitting vacant too long.Which means owners aren't paying attention to the rental market - which is slowing, causing Days On Market (DOM) to increase:(Take a look at the graph below from ShowMojo, comparing average DOM for 2018-2024.DOM are now about 40% longer than they were 2 years ago.Many owners also don't seem to be aware of real estate market fundamentals, such as seasonal effects:1) After September, when kids go back to school, there's a noticeable dip in activity in both the sales & rentals.2) After Halloween, there's another noticeable dip.

The renovation budget can be artificially inflated so you can have a "cash pillow" for maintenance or anything else really.The conventional loan for purchase and rehab is the most commonly used by investorsIf you have a company it is also possible to apply for loans but it is necessary to have at least 6 months of activity.

BRICS is rising, growing, being pro-active and the US is doing what..... coasting on yester-generations. 

(Run the numbers for them) If they're in an active bankruptcy that's also a factor.

If the property is a personal property used for personal purposes, there is no depreciation since its not a business asset.There may be a chance that you have a home office within the home that is eligible for some write-off but you have to be using the home office towards a business activity.