I am trying to find the standardization for what a lender should be properly using to calculate net income and thus freeing up DTI.

You have a right to enter as long as you give proper notice, and there is no requirement that he be present.this could be a very innocent request from the tenant but it could also be an indication something is wrong.

If they are already month to month, just give them proper notice on the rent increase and leave them month to month.

And my husband installs the hose himself properly with Teflon tape or paste.  

However, if your property manager is not adhering to your written agreement then it may be time to part ways.Your tenant is on a month-to-month and they are running a business in a residential home. my recommendation would be to contact the tenant and let them know you will only allow them to continue running the business if they take on ordinary maintenance (e.g. they pay the first $500 on all maintenance issues), provide proof their business is properly licensed and registered with the city, county, or state, and that they have the appropriate liability Insurance in place (at least $1 million) with you named as the additional insured or additional interest.

Beware that the majority of condos in Florida prohibits STR’s (not explicitly, but will they have minimum lease duration and a maximum number of times per year you can rent the unit) and those that don’t, know they’re part of an elite few and charge all the money for them because they know an investor will buy it.Make sure you read the condo association’s rules and regs before entering into a contract. 

But if you need them to stay in escrow to be able to budget properly, then leave them in.

They can make sure your money is properly secured to the property.

The one thing a noticed is that with the FHA you will have to pay PMI for the duration of the entire loan unless you refinance and with conventional for the first 20% only.Hope that helps. 

You will also want to make sure that the property is zoned properly.