@Kevin Drouillard Here is what Fannie says about multiple financed properties. Please note, this only pertains to second home and investment home purchases. Fannie states that if you are buying your primary residence, there is no limit on financed properties. Meaning if you have ten properties already and you are going to buy your primary residence, that cap will not come into play. They will finance the eleventh purchase if it is a primary residence.
Applying the Multiple Financed Property Policy to DU Loan Casefiles
If the borrower is financing a second home or investment property that is underwritten through DU, the maximum number of financed properties the borrower can have is ten. If the borrower will have one to six financed properties, Fannie Mae's standard eligibility policies apply (for example, LTV ratios and minimum credit scores). If the borrower will have seven to ten financed properties, the mortgage loan must have a minimum representative credit score of 720; all other standard eligibility policies apply.
There are plenty of banks and lenders out there that will follow Fannie exactly so you shouldn't have an issue going up to ten investment properties. For people starting out, another issue and maybe a reason you are asking about your primary residence, is debt to income ratio. If you are worried that you will not qualify for more investments after you buy a primary residence because you have no rental income offsetting the monthly debt service, that is a valid concern. Like anything, you can easily have all of the questions answered and also come up with a long term plan, if you find a mortgage banker or broker that you trust to help consult you throughout your real estate investing life.