As vacant houses go, 409 Belsize Drive near Bayview Ave. was ranked by the South Bayview Bulldog as the spookiest on the street before Halloween. Now the developers are having their day as the stucco and frame storey and a half finally disappears. The old home looked especially creepy through the front widow and one might not have guessed that it fetched $850,000 when it sold just about a year ago. It had been listed at $773,500. Now you can get an idea of how much of an edge the builder will have as he hopes for an appreciation on today’s prices for a new home at this choice location. The lot is a typical east-end Belsize size — 25 by 125.