if have more than 10 financied residential properties. Fannie Mae (the biggest final lender) no longer approve your loan. You have some options. Use non QM loans (rate is higher). split you and your spouse. Per Fannie Mae guide. the 10 limit is for one borrower. But many lenders limit to one family. If you and your spouse file tax return seperatly, you both can loan 10. as primary home must be count as joint even owned by one spouse. so you total can loan 19.