According to MLS Rules and Regulations, listings are limited to 21 days in the coming soon status, except for new construction/condo conversions/major renovations for which there is no occupancy (e.g. no active certificate of occupancy) and no showing, in which case the property may remain in coming soon status until either (a) the first date the property may be shown: or (b) 21 days after a certificate of occupancy or similar permit is obtained, whichever happens first.