WASHINGTON (AP) — America’s housing market has grown so overheated as demand outpaces supply that prices keep hitting record highs — and roughly half of all U.S. houses are now selling above their list price. Two years ago, before the pandemic struck, just a quarter of homes were selling above the sellers’ asking price, according to data from the real estate brokerage Redfin. On Tuesday, new data further illuminated the red-hot nature of the housing market: Prices rose in March at the fastest pace in more than seven years. The S&P CoreLogic Case-Shiller 20-city home price index jumped 13.3% in March compared with a year earlier — the biggest such gain since December 2013.