A lively local real estate market is pushing up the the number of “BOMs,” or deals that go bust. Les Sulgrove, vice president at VIA Realty Group in West Des Moines and a cruncher of residential real estate numbers, said 23 percent of December sales fell under the spell of the BOM — which stands for back on the market. Sulgrove said about 15 percent of home sales typically fall apart, but the number has risen over the last couple of years. “Typically a sale will fall apart over buyer financing, low appraisal or home inspection results,” Sulgrove said in an email. With relatively low inventory of home sales, buyers tend to make a quick offer in an attempt to stave off competitors. Buyers’ remorse might set in after an offer is made following one visit. In addition, the potential buyer might be house shopping with an offer for their current home in hand. If that deal goes BOM, well, you understand the snowball effect. Sulgrove said 728 listings went under contract last month, a number that has dropped 8.2 percent from a year ago. Closed sales fell 328 short of the same time last year, but there is more selection, with the inventory of homes for sale up 10.2 percent. You can find all the numbers at Sulgrove’s Simply Des Moines blog.