Sales activity in Delray Beach increased across the market as negotiability tightened. The number of single-family sales increased 14.2% to 298 and the number of condo sales rose 3.3% to 593 respectively over the same period. The increase in sales reduced the negotiability of both property types. Listing discount for single-families, the percentage change from the list price at time of contract to the contract date, declined to 6.2% from 9.6% in the same period last year. The condo market followed the same pattern with the listing discount falling to 5.4% from 6% over the same period…