@Kalubalu Shah This is a classic question not only for beginners.
Cash Pros: no mortgage, ability to take it all out in refinance, can leverage (finance) House 2 b/c House 1 is all cash
Cash cons: the cash is temporarily (or permanently) gone, not leveraging the most out of your dollar, if the property doesn't refinance where you think it should - you can't get all your cash back
Loan Pro: potential to maximize your leveraging ability, tax incentives, experience in going through the loan process
Loan Cons: holding costs/mortgage payment, acquire debt, interest rates rising make it tough to refinance (for the time being)
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Depending on the amount of capital you have, I might recommend the BRRRR strategy. Further detail below but start researching the BRRRR strategy.
BRRRR
Step 1: Buy - buy distressed property all cash
Step 2: Rehab - Rehab the property using cash
Step 3: Rent - Rent the property
Step 4: Refinance - Cash out refi the property to take out the money you spent on buying the house and the rehab (make sure the rent covers your new mortgage & expenses - this is part of your up front analysis)
Step 5: Repeat - repeat the process
Good luck!