The first reason causing the real estate bubble to burst is the fact that interest rates have risen and are still climbing today. From June 2003 to June 2004, interest rates were at a historic low. This allowed people to buy homes and get loans at such low interest rates that they were buying a home for more than what they could afford. The low interest rates would give a family the opportunity to buy a home that is more expensive than what could be afforded, while still paying a low monthly affordable payment. This led to a major crisis as interest rates began to climb driving home prices up and existing home values down. People who had purchased houses back when interest rates were low could not bring forth the money after the interest rates had risen. This led to a 72% increase in foreclosures.
The inflation of interest rates also affected people who bought adjustable rate mortgages (ARMS). ARMS would give the buyer low interest and low monthly payments for about the first couple of years and then after the rates would jump and the mortgage payments went out the roof. Both scenarios caused a major increase in foreclosures from 2005 onward. Families who had subprime credit ratings were allowed to purchase the homes early in the 2000's for more than what they had to offer. Combined with the ARMS and rising of interest rates, this is one reason why the real estate bubble ill burst systematically causing a United States recession.