For example, are lenders stricter about DSCR ratios, or do they require higher reserves?

I would deduct the fee they charge x 60 reservations they have to see what it is of the gross.AirBNB usually takes 3% for 1 property, as others have mentioned.

Verify these numbers by researching comparable rentals in the area or consulting with a local property management company.Additional considerationsContingency Funds It's wise to have reserves for unexpected expenses during the rehab process or unforseen vacancies.Market Conditions Keep an eye on the Denver market trends.

This is rent minus mortgage PITI and property management fee 10% (I don't include capital expenses in that calculation since I already set aside a reserve fund and the HVAC and water heater are 5 years old.

Everything was running fine until Underwriting wants to know about the 10% for reserves in the HOA account.

After that, run the background and credit check, verify their income by reviewing the financial documents they provide, and contact their employer to confirm their employment.

At the same time no matter how much excess insurance coverage you obtain, there will always be a policy exception for gross negligence and even negligence will likely be covered only under reservations of rights meaning the carrier can opt not to provide coverage. 

The previous leasing company confirmed the resident had paid their rent on time every time.

Can anyone confirm this?

Because two things: first, if you can't save enough money to make a down payment on an investment property, you shouldn't even be in this game, and second you are going to need cash reserves to cover the infinity of things that can go wrong on a rental, which means you should already have some free cash flow coming in from somewhere to account for that before you even rent the place out.