Docks, cribs, boat lifts, stairs down to the water, armour stone at the waterline and repairs after ice. Work in or beside the water usually needs an approval the municipality does not issue: the bed of most Ontario lakes and rivers is Crown land, and the conservation authority regulates what happens on the shoreline above it.
Quote only
A replacement dock on a residential waterfront lot with road access to the water. Cribs, marine railways and armour stone cost more. Excludes the approvals and the drawings they need, removing the old structure, and barge or crane access where there is no road.
Demand and price peak in summer. Booking outside it is the cheapest saving available on this job.
Ontario licenses nobody for this work, so there is no licence to check and none to hold. Insurance and WSIB clearance are what a homeowner compares here. References and a written scope do the work a licence check would otherwise have done.
You asked for the trade Docks and shoreline, and the words "rooftop solar installation", and businesses serving Scarborough. 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.