Hopefully someone else will actually have something positive to contribute, instead of a rude response that adds no value, and just adds to post count. 

I bought a house last week and am selling a house next week, but I don't know how many doors I have today, unless I effort a count. 

@Dalton Foote I have had tremendous success using direct mail and mailing the owner of record where the tax bills get mailed to.Generally, property management companies don’t pay the real estate taxes so this gets me right to the owner.Targeting wise, I would just do a zip code filtered by unit count using a service like listsource.  

So, if your property has all bills paid by the tenant, you will deduct from the voucher amount the set amount by bedroom count for items like water, electric, gas, etc.

Buyers could look at a DSCR loan which does take into account the revenue from the rent but it doesn't count towards the value of the property.Now, buyers could look at a business loan of some kind but I am not sure they would qualify if it is only one property and even then, the value is mostly in the property and not the possible revenue. 

Also, from what I read in Bloomberg, midterm rentals near major hospitals can sometime command a decent premium.. especially if they include some nice furnishings.Little Tweaks Count: Even minor upgrades, like new door locks or a fresh coat of paint, can help you justify a stronger rent.Driving for Dollars & Networking..

Due to increased rates i did not refi so i did not get opportunity to see how an appraiser valued the half bathroom but the comps with same bathroom count had crazy valuation for the additional half bathroom.Taking under utilized space like a work area to add a br where the added br does not put you above the normal for the area can add value.Similar if a neighborhood is virtually all 3 br and 4 br properties and you find a 2 BR, it could be a value add to add the bedroom via new construction.  

Also, I believe I saw somewhere that the mortgage won't count against the original owners DTI after a period of time if they show someone else is paying the mortgage.

You can also usually count on rents increasing enough in around 5 years, so that you do cashflow.Of course you have to watch out for over-leveraging and going bust!

This information is then linked in the database—think of techniques like pulling signatures from mortgage documents and extracting unit counts/construction types from building permits.This allows you to search my name and instantly see all of the rental properties and construction projects I own, even though they are well covered by holding companies.