There are multiple ways to do this:
1. After 6-months to a year, you could pull some of the accrued equity on there to go buy another property.
2. You could do a cashout refinance on the property.
3. You could do a DSCR loan for your new property. DSCRs are based on the income the new property will make with usually little to no downpayment, just closing costs. You qualify for a DSCR loan based on your DSCR ratio. If the property rents for $1500 and the PITI expenses(loan principal, interest, insurance, taxes) will be total $1000, then you DSCR ratio=
Rent monthly/PITI monthly total=$1500/$1000=1.5. Lenders usually lend at a DSCR 1 and above with great terms. DSCR ratios below 1 will have higher rates. Many investors use this because your income is not considered, rather what the property income will be vs the PITI monthly. If you have decent credit that helps too.
3. Hard money loans
4. Private money loans
5. conventional money loans