Blossom Hill Cottage was Peggy's a long time ago, then Usha bought it and lived there, with Richard Locke for a time and then when she moved in with Alan it was rented out, notably to Rob (and then Helen and Henry as well) and most recently to Anisha, with Rex as a frequent visitor.
Honeysuckle belonged to Walter Gabriel, I think, then to his son, the wonderful Nelson (still my favourite ever TA character), then to Tim and Siobhan Hathaway and now to Adam and Ian.
Woodbine (which means the same as Honeysuckle, I believe) is a different one, and belonged at one point to Christine. Fallon and Harrison are there now.
Glebe is indeed rented to the implausibly silent Carol.
As for where Doc Locke resides, is that the Grundys' old place, Keeper's Cottage? Next door to silent Kathy in April Cottage.