230 Harbor Street: Estate of Marie L. Donofrio and Rosemary Cinquanta to Paul V. Riccio, $200,000 on Sept. 24. 3 Pineview Drive Unit C: Alexander G. Dadamo to Beth A. Canning, $135,000 on Sept. 25. 76 Queach Road: Thomas and Donna Nolan to Jeffrey R. Ouellette, $823,000 on Sept. 23.