Financial disaster is looming for American commercial real estate. Here's what experts see happening next.

• Experts have been increasingly sounding the alarm over US commercial real estate.
• Those woes could also spill over into the banking industry, which is heavily exposed to the sector.
• Here are four red flags Wall Street sees in the commercial real estate market.

There's a potential financial disaster looming over America's debt-stricken commercial real estate sector, and a boiling point could come as soon as next year, real estate experts warn.