Hey Cameron, for experienced investors I can lend up to 100% of the purchase and rehab costs on 1-4 unit properties.

Help him purchase another home Subject to that existing mortgage. 

As an agent I often times refer to emotional appeal as a large factor on what drives purchase price. 

I've included an example below to help illustrate this.So different lenders have different rates (which do vary even for DSCR loans) but these are factors they all consider.See example below:DSCR < 1Principal + Interest = $1,700Taxes = $350, Insurance = $100, Association Dues = $50Total PITIA = $2200Rent = $2000DSCR = Rent/PITIA = 2000/2200 = 0.91Since the DSCR is 0.91, we know the expenses are greater than the income of the property.DSCR >1Principal + Interest = $1,500Taxes = $250, Insurance = $100, Association Dues = $25Total PITIA = $1875 Rent = $2300DSCR = Rent/PITIA = 2300/1875 = 1.23If a purchase, you also generally need reserves / savings to show you have 3-6 month payments of PITIA (principal / interest (mortgage payment), property taxes and insurance and HOA (if applicable).

Since they can't do each property individually, they use comparable sales to make broad generalizations to determine percent changes.

Purchase price: $178,000 Cash invested: $10,000 primary home own use has an Airbnb/ short term rental 5 months out the year/sometime this year will try BRRRR

I've not yet invested in my first property, but I plan to purchase my first one by the end of 2023.

I have a followup question - I will realize a lot of capital gain from this home in Idaho, so I think unless I purchase a new primary residence I will have to pay that capital gains tax. 

I work with several real estate developers across the country and they all do it differently.My suggestion is to find a property type and an area/neighborhood/city/market that you are drawn to and plot your course from there.As for the amount of money you'll need, it's gonna be mostly driven off the purchase price of the property.

For a purchase generally application would be to review an ID, asset statements, and LLC docs if neccesary.