It's like buying a car and you want one extra option but that means a model upgrade so you pay thousands to get the one $100 option you really want.@mimico_polak to move or not is always a tough choice IMO.
As for costs you highlighted the much higher ongoing expenses, the simple move itself will likely be a sunk 100K or close to it, land transfer tax on the buy, lawyer fees, moving costs, real estate fees on your sell, storage, etc.....
What can you do to your current house to make it better by lighting 100K on fire? Or, as noted, a nearby condo for the MIL taking advantage of the market conditions and that 100K as a down payment... In her name, no capital gains when it comes time to sell it...
I don't want a bigger house, just a bigger garage but that can only come with the bigger house.
