I don't have any insider information - I'm just a mere local busybody.
I just find it very suspect that the developer would proceed with the Car Dealership along its Yonge Street frontage first - since this would limit access and make construction of condo tower in rear more difficult. Yes, I'm quite familiar with the proposed POPS walkway and on-site Parkland dedication along the southern side - due to the adjacent lot to the west, ConservatoryGroup/YolandaFlander, ability to revise this proposal for their own benefit.
The 4.69FSI - awarded here via OMB/LPAT - is slightly higher than the 4.5FSI maximum allowable density under North York Centre Secondary Plan; which since losing against Menkes GibsonSquare at OMB now allows for upto 5.98FSI density at prime corner site with direct subway connection (thus, far of built projects Tridel Hullmark-Centre, Bazis EmeraldPark and RioCan Yonge-Sheppard Centre has utilize this).
As you know, there's a couple of development proposal north of North York Centre Secondary Plan boundary of Cummer/Drewry with about 12FSI density (Ghod's 5959 Yonge & 5997 Yonge) before the OMB/LPAT and may trigger the Yonge Street North Secondary Plan - they're assuming a Cummer Subway Station would be built to their front door!
Recently on behalf of CityPlanning, local Councillor Filion has formally requested clarity from Metrolinx on it's commitment to a Cummer Subway Station. IF that Cummer Station is to be built with entrance south of Cummer/Drewry, then this site could potentially have a direct subway connection,... and thus be eligible for upto 5.98FSI density under the North York Centre Secondary Plan.
So increasing density FSI by a third, increasing number of condo units by a third, increasing profit by a third,.... that's pretty strong incentives to up-zone further when the timing is right.
This is probably why across Yonge Street, Aoyuan M2M will be done in 3 Phases leaving it's fifth and last tower to be built as a low mid-rise - for now,... and if Cummer Subway Station is built, this Phase 3 low mid-rise at southeast corner of Yonge & Cummer would shot up as M2M density goes from 4.2FSI (2014 Final Report) to 5.98FSI maximum and become the tallest & thickest of M2M towers
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http://app.toronto.ca/tmmis/viewAgendaItemHistory.do?item=2020.NY20.33