Dog lives in a mysterious old Victorian style house that has a dumbwaiter, possibly has puppies to care for, and the book is for young adults, may be a chapter book with several illustrations. Art style and spirals on the ends of letters suggests mid 60s to mid 70s. I checked this book out from a library in San Diego around 1988.
I think this may be one of the Minden Books by Willo Davis Roberts. The Minden Curse maybe.