Boston, MA. — Sales of single-family homes and condominiums each rose steadily in April, improving on an annual basis for an eighth consecutive month, and median selling prices rose to new record highs as inventory levels remain constrained, a new report from the Greater Boston Association of REALTORS® (GBAR) shows. Strong demand from first-time buyers, a desire for more living space among existing homeowners, and increased availability of COVID-19 vaccines along with a broader re-opening of the economy have all helped to boost market activity and consumer confidence, GBAR officials said.