I can't overstate the importance of accurate surveys of your property... so, 'nuff said, at least for now!
The Old Geodetic Survey Tower
Scarboro Heights has a profound historic connection with geodetic surveying in this part of southern Ontario.
From The Scarboro Heights Record V9 #4
The "Back-Forty" Turns up a Relic
How 'bout that! I (and my family) have lived right across the road at 9 Scarborough Heights Blvd. since July 1 1951. Ours was one of the first half dozen houses on the street. We have seen a lot of changes in 50 years. In the early '50s, I was digging in the backyard and unearthed one of those century-old square-headed nails. I considered it a worthy find and conversation piece, so I glued it to the side of the kitchen cupboard -- it's still there!
From The Scarboro Heights Record V9 #5