As noted in a previous post, there is money available to you from government programs for energy efficiency upgrades.
The new federal budget added a tax credit for renovations that goes beyond specific energy upgrades -- just do something ! spend money ! hire somebody ! NOW ! ... you get the idea. Here is a useful Q&A on how the HRTC (Home Renovation Tax Credit) works: http://www.cra-arc.gc.ca/gncy/bdgt/2009/fqhmrnvtn-eng.html
While we're at it, here are a couple more info documents on budget stuff that relates to real estate:
... Not Really First-Time Home Buyers Tax Credit (you can actually quality if you haven't owned a home recently)
... Looting your RRSP to help with a home purchase (OK, they call it the Home-Buyers Plan , and it does make sense FOR CERTAIN PEOPLE, but be careful...)