Window and exterior door replacement, capping, weatherstripping and glass repair.
$900 to $2,500 flat
Per window supplied and installed. Larger or custom openings, and full frame replacement, cost considerably more.
Demand and price peak in summer. Booking outside it is the cheapest saving available on this job.
We hold no licence to check for this category, so insurance and WSIB clearance are what a homeowner compares. That says what we hold, not what the province requires: nobody here has checked whether Ontario licenses this work. References and a written scope do the work a licence check would otherwise have done.
This work usually needs a municipal permit. Unpermitted work has to be disclosed when you sell, and an insurer can decline a claim arising from it.
You asked for the trade Windows and doors, and the words "system monitoring and service", and businesses serving Richmond Hill. Of the 12 businesses listed, none match every one of those.
The cost band and the licence requirements above still apply. They are what you need to judge a quote from anywhere else: whether the price is in the range, and whether the person quoting is allowed to do the work at all.
Dropping any single one of those filters still leaves nothing, so it is the combination rather than one filter.
Listings here are seed data for demonstration and are labelled as such on each profile. Cost bands are what GTA homeowners are typically quoted, not offers. Always confirm a licence number against the issuing registry yourself before work starts.