Arizona Public Media is reporting that there is a rising trend in cosigners as a requirement to secure a home loan in Tucson.

The news comes from a study by Attom Data Solutions that show 18.4 percent of single-family home loans in Tucson in the second quarter of 2017 required co-borrowers. While four percent higher than this point last year, that number still falls behind the national average of 22.8 percent.

Though co-borrowing is the norm, particularly in high-priced markets like San Jose (a whopping 50.9 percent) or Miami (45.2 percent), many are wondering why it's gaining popularity in moderately-priced Tucson.

Multiple things may be happening, says Attom Vice President Daren Blomquist. Millennial buyers without a lengthy credit history or “boomerang buyers” who lost their homes during the housing crisis are now stepping up to purchase homes. Their lower credit scores mixed with stauncher lending requirements make that difficult, often requiring others to step into the loan process. 

It should be pointed out that Mesa and Gilbert were among the U.S. cities with the lowest share of co-borrowers in spring 2017, with 12.5 percent and 14.2 percent of loans including cosigners, respectively.