If you are not able to secure traditional financing in order to purchase a home, you may consider looking for real estate that has owner financing. Owner financing allows the seller to sell you the property on their own terms and collect a payment from you each month. They get not only the purchase price, but the interest as well.
If you are purchasing a rental property with tenants, check their lease length and history. It is not unheard of for a person desperate to unload a property to find or hire short term renters to entice a buyer. Once the home is sold, you could be left scrambling to find new tenants.