Do most parging contractors in Toronto charge by the square foot or by the job?

Most parging contractors in the GTA quote by the job rather than strictly by the square foot, though they calculate their pricing internally based on square footage, preparation complexity, and accessibility. When you receive a quote, it will typically be a lump-sum project price, but understanding the per-square-foot math behind it helps you evaluate whether the quote is fair.

The reason contractors prefer project-based quoting is that parging work involves far more than just applying material to a wall. Surface preparation — removing loose old parging, cleaning the substrate, applying bonding agent — often takes as long as the parging application itself. A foundation wall with 100 square feet of surface area that has badly deteriorated old parging requiring full removal costs significantly more to parge than a clean, solid 100-square-foot wall that just needs a fresh coat. Accessibility matters too: a wall with a clear 4-foot work zone in front of it is straightforward, while a wall squeezed between the house and a fence, buried behind landscaping, or requiring work near gas meters and utility connections takes more time and care. These variables make strict per-square-foot pricing misleading, which is why experienced contractors assess the specific conditions before quoting.

That said, knowing the typical per-square-foot ranges helps you sanity-check any quote you receive. Traditional Portland cement parging runs $8 to $12 per square foot installed, and polymer-modified parging runs $12 to $18 per square foot installed in the current GTA market. If a contractor quotes you $3,500 for 150 square feet of polymer-modified parging, that works out to roughly $23 per square foot — higher than typical and worth asking why. Perhaps the old parging removal is extensive, or the wall requires wire mesh reinforcement due to its condition. Conversely, a quote of $800 for the same job works out to about $5 per square foot, which is suspiciously low and suggests corners are being cut on surface prep, bonding agent, or material quality.

When comparing quotes, make sure each contractor is quoting the same scope of work. Ask specifically whether the quote includes removal of existing loose parging, surface cleaning, bonding agent application, one-coat or two-coat application, and cleanup. Some contractors quote only for the application and charge extra for removal and prep — this isn't dishonest, but it makes comparison difficult if another contractor includes everything in their lump sum. Also confirm whether the quote includes polymer-modified parging or traditional Portland cement, as the material difference affects both cost and longevity in Toronto's harsh freeze-thaw environment.

For small patch repairs, many contractors have a minimum charge of $500 to $800 regardless of the area being repaired, because mobilization costs (travel, setup, cleanup) are the same whether they're patching 5 square feet or 30 square feet. This is standard practice and not a sign of overcharging. For larger projects — full foundation re-parging, for example — the per-square-foot cost tends to drop because the setup and mobilization costs are spread across more productive work area.

Always get at least three quotes, ensure every contractor carries WSIB coverage, and ask for photos of recent GTA projects completed in similar conditions. Get matched with parging professionals through the Toronto Construction Network for free estimates.