Depending variables such as credit score, employment, cash flow/s, debt ratios and appraisal values of the properties you own, you may be able to to get a lender to lend you the funds. Either through a mortgage, home equity loan/s, or a line of credit, etc.. Remember most lenders will only let you borrow up to 80 or 90% of your equity, sometimes less for investment property. It sounds like you may have a good history of managing rentals. If you have a good relationship with your lender start there.