Fannie Mae and Freddie Mac are taking note of the growing number of borrowers earning extra income outside of the traditional weekday, 9-to-5 job and look to make mortgage underwriting more accommodating to this demographic.The gig economy is made up of consumers providing on-demand services such as driving for Uber or Lyft, renting rooms in their homes via Airbnb type outlets, and providing personal services such as handyman tasks or deliveries. A recent survey by Fannie showed that 71 percent of lenders reported having had borrowers with gig employment income apply for a mortgage over the past year and about 89 percent expect this trend to grow over the next few years.