Charts:
The value of your home at the time of separation is really irrelevant unless one party plans to buy the other out and that's the value you both agree to. Since both you and your spouse will list the same value on your Financial Statements for equalization purposes, you can use the 2006 MPAC value.
If you plan to sell the house and divide the proceeds, or if one party plans to buy the other out and you will be using the home's current market value, I would suggest you obtain the services of a professional appraiser. The cost is about $350 plus tax, but you will receive a comprehensive report detailing how the appraiser arrived at the current market value, complete with pictures of each room in your home and neighbourhood comparables. You can also obtain the same report for 2006, but that will cost extra.
Linda