Prince Harry and Meghan Markle say they’re keeping their Montecito mansion as they relocate the family back to Britain, but a source in the Santa Barbara luxury real estate market told The Post there “have been rumblings” the couple will sell the property, adding that “every broker wants that listing.” This comes as The Post can reveal that the property costs the former Royal couple a staggering $600,000-plus a year in mortgage payments and tax alone — a potential motivating factor for a sale. Jason Streatfeild, a Douglas Elliman broker who represents the Santa Barbara and Montecito area separately told The Post deals of this size don’t…
