By Timothy Tay/ EdgeProp Singapore|March 20, 2020 7:00 AM SGT SINGAPORE (EDGEPROP) - A three-storey townhouse in The Windsor — a freehold development on Ontario Avenue — will be auctioned by Knight Frank on March 27. The 2,497 sq ft, four-bedroom property has a guide price of $2.75 million, or about $1,101 psf on the floor area. The Windsor was completed in 1987 and is located off Upper Thomson...