What a free basement waterproofing estimate includes

A free estimate should be a visit to your home, a look at where the water is getting in and a written price for the fix, because Ontario's home renovation page tells homeowners to get written estimates and not to accept one without an inspection. Most companies advertise one: at least 203 of the 347 records whose website text this index stored, or 148 of 250 distinct websites, offer a free estimate, quote, consultation, inspection or assessment. The index reads only a short excerpt of each site, so 203 is a floor.

Free can depend on what you buy. Two records from one plumbing brand say on their own websites that they will waive the inspection fee if you accept the quoted price. On those terms the inspection is free only if you hire the company that did it.

So before anyone comes, ask three things. Does the visit cost anything if you hire someone else? Is a drain camera inspection part of the visit, or billed on top? Will the diagnosis be written down, and is that report included? A company that answers in writing has given you a record of its terms.

The visitor should look, ask and explain before naming a number. Ontario's home renovation page (updated 6 August 2026) says to "never accept an estimate over the phone or without the contractor inspecting the area". It adds that "good contractors ask a lot of questions so they can understand and plan out the project".

The City of Toronto's basement flooding page shows what useful questions sound like. After a flood, its water service technician asks whether the water was clear or muddy, whether it smelled, where it might have entered and how long it took to recede. The page explains that "Clearer water is normally a result of overland flow/drainage issues", meaning rain or meltwater running over the ground toward the house, while muddy water can point to a sewer blockage. A contractor who asks nothing like this before quoting has less to go on than a City technician does.

Several causes on the City's list sit outside the house, so a visit that never leaves the basement skips part of it. Ask the visitor to walk the outside walls, look at where the downspouts empty and check whether the ground slopes toward the foundation. Before the visit, run the site's leak-cause tool so you know which causes fit your symptoms and can tell whether the visitor checked them.

It should name where the water gets in, which cause the contractor thinks it is and what evidence points there. The City of Toronto's basement flooding page lists the usual reasons basements flood. Its list includes a crack or leak in the foundation, basement walls, windows or door, and poor lot grading or drainage. It adds failure of the weeping tile system, which the City calls foundation drains, and failure of the sump pump that removes weeping tile water. Overflowing eavestroughs, leaking or plugged downspouts and sewer back-ups from blocked, broken or overwhelmed sewer lines complete it.

Each cause leads to a different trade and a very different bill. Sealing one crack, regrading a side yard and digging out a whole wall are separate jobs. The site's cost guides for crack injection and basement waterproofing show how far apart the published prices for one crack and a whole drainage system sit. A diagnosis that names no cause leaves you nothing to check the price against.

Ask for the diagnosis in writing, with the entry point marked on a sketch or photographed. If the visitor recommends work on a wall that has never shown water, ask what evidence points there. The written diagnosis also becomes your record of what you were told the house needed, which matters if the work later fails to stop the leak.

A diagnosis explains what was found and leaves you time to check it; a pitch pushes you to sign today. Ontario's home renovation page describes a common scam: a salesperson offers to inspect your "furnace, chimney or roof, free of charge". It goes on: "Afterwards, you are told that immediate and expensive repair work must be done." The individual then has a contract ready to sign. The page's examples are not basements, but the pattern of a free inspection followed by urgent work and a contract on the spot is the one to watch for at any free visit.

The same page warns against a deal that sounds too good to be true and against a large down payment asked for up front to buy materials. It recommends keeping a down payment to no more than 10% and never paying the full amount before the work is done.

Ontario's page on the Consumer Protection Act lists "recommending unnecessary repairs or replacements to items" among its examples of misrepresentation. It says that if a business misrepresented its product or service, you can withdraw from the contract within 1 year. The page gives no basement example, so read it as a general rule, and keep the written diagnosis as evidence of what you were told.

Ontario's home renovation page says "Estimates should have a description of the work to be done, an itemized list of products and services and their prices". It adds: "Make sure that everything you're expecting is listed". It also says to get written estimates from at least 3 contractors, and that any home renovation contract worth more than $50 must be in writing.

For a wet basement, the description of the work should carry the diagnosis: the cause found, the walls or areas affected and the method chosen. Ontario's contract page says "All fees and charges must be what they say they are", so ask whether the total includes HST (the harmonized sales tax) and whether any permit is in the price. The line items a waterproofing quote needs, such as dig depth, membrane and restoration, are set out in what a basement waterproofing quote should itemize, so they are not repeated here.

It can, once it becomes part of the contract. Ontario's home renovation page says that when an estimate is included in a home renovation contract, "the final price for all goods and services cannot be more than 10% over the original estimate unless you have agreed to new work or a new price". Its contract page adds: "Make sure that any written estimate you receive is part of the contract, so that this 10% rule will apply".

The contract page also says you can demand an adjustment if you are charged more than 10% above a written estimate without agreeing to it, and can complain to the ministry if the business refuses. If new work turns up once the floor or wall is open, the home renovation page says your contractor should discuss it with you and ask you to approve and sign a change to the contract, including a new estimate.

You can still change your mind for a short time. A free estimate happens at your home, so a contract signed at the kitchen table at the end of the visit is a contract signed in your home. Ontario's home renovation page says that for a home renovation or repair contract worth $50 or more signed in your home, "you have the right to a 10 calendar-day cooling-off period". You may cancel for any reason, without cancellation fees, within those days. If the contractor started work during that period, the page says you can still cancel but owe reasonable compensation for the work and materials provided.

Ontario's contract page says a cooling-off period runs 10 days from receiving a written copy of the agreement. It advises sending the cancellation by email or registered mail so you have a record of when it went, and says that for most contracts the company has 15 days to return your money. The same page says you are not bound by a clause requiring private arbitration instead of court or a complaint to the ministry.

Compare the diagnoses before the totals. If three companies name three different causes, ask each one what it saw that points there, and treat a cause nobody can show you with suspicion. The City of Toronto's subsidy page recommends "a minimum of two quotes as well as references" before hiring.

In Toronto, part of a diagnosis is subsidized, and you are not obliged to act on it. The City's subsidy page offers up to 80 per cent of the invoiced cost, to a maximum of $500, for a one-time home plumbing assessment. It says a professional plumber "will provide information about issues with the home's internal plumbing that could contribute to basement flooding", that "You will need to have your licensed plumber complete the Home Plumbing Assessment Form", and that you are "not required to implement any of the plumber's recommendations" to receive the subsidy. That covers the home's internal plumbing, not a leaking wall. The other conditions are in the guide to the Toronto basement flooding subsidy.

To find companies to invite, start from the cause the leak-cause tool or a written diagnosis points to, and match it to the site's category descriptions. For a failed sump pump or a sewer back-up, two causes on the City's list, the sump pumps and backwater valves category covers pumps and the backwater valves that stop sewer water flowing back into the house. For failed weeping tile or poor lot grading, weeping tile and drainage covers weeping tile replacement and lot grading. For a crack in the foundation or basement walls, foundation repair covers crack repair, and basement waterproofing covers repairs that stop water entering a below-grade wall or floor. A company can sit in more than one category.

The direct route to a company is its own website or its Google record. The site's methodology page says it "does not check WSIB coverage, liability insurance, licences or workmanship guarantees", so ask about anything that matters to you at the visit and get the answer in the estimate.