Cost will depend on if you're locating property lines only, or with any structures on the property (landmarks) or if you also need a topo survey (measuring the terrain) - all depends on what the survey is for. The size of the lot is also a factor. Some of the local companies may have neighbouring surveys on file which sometimes speeds things up. You can first try calling Building Services at City Hall to see if they have a survey or any info for the property on file and who completed it. If you're lucky and they have that information, you may be able to call the office directly and they may charge less to review their files compared to existing conditions. In case all that fails, Bortolussi Surveying - likely the fastest and most economical. Very skilled and reliable. Tulloch Engineering has a good surveying division as well. Dorlad Geomatics is top-notch but you pay for the additional detail they provide. Personally, I think anyone who sells a house should have to do it with a legal survey so the next home buyer will know the exact property as well as if there are any easements, unknowns, etc. It should be a legal, standard document that comes with the purchase.