Concrete and foundations in Greater Montréal

Concrete and foundations: the region’s figures

Concrete and foundations: 870 companies of the metropolitan region appear in the RBQ data of November 3, 2026, out of 2,467 across Quebec (35%). This trade ranks 7 of the 15 in our lists for the region.

A crack that lets water in, a damp basement, a clogged French drain or settling: concrete and foundation companies inject cracks, waterproof walls from outside, replace the French drain or underpin a foundation. The clay soils of part of Greater Montréal move in dry spells: a crack that widens should be watched.

Spread across the region

Where they are based: the Island of Montréal 296, Laval 118, the South Shore 232 and the North Shore 224. Best-served area of the island: Saint-Léonard, with 40; then Rivière-des-Prairies–Pointe-aux-Trembles (39), Saint-Laurent (30), West Island (28) and Ville-Marie (Downtown) (27). Laval and the North and South Shores: Laval (118), Mirabel (44), Terrebonne (36), Longueuil (31), Blainville (26), Repentigny (26), Brossard (22) and Mascouche (19).

Seniority on the island: 63% of the 296 companies have been licensed for at least 10 years (the longest since 1984), and 4 joined in the past 90 days. The same companies often hold other licences: renovation (224), heating and cooling (191) and stoves and fireplaces (184). Published phone: 296 of them (292 with a 514 or 438 area code).

Preparing your request

Foundation and structural concrete work falls under subcategories 3.1 and 2.6. For a large crack or settling, an engineer can assess the cause before the work starts.

Note where the water comes in, after what kind of rain, the width of the crack and whether it grows (a dated pencil mark helps). Attach photos and give the year the house was built. Digging near a shared wall or a city tree may need a permit: ask who handles it.

RBQ licence to check for this work: 3.1 Concrete structures, 2.6 Piles and special foundations.

See also

• How it works
• RBQ licence check: how to verify a Quebec contractor
• Foundation crack repair: when to worry, who to call
• French drain (weeping tile): signs and replacement
• Radon test at home: when to test and how to fix it
• Digging and retaining walls: locate request and permits
• Pyrite under the slab: signs, SPPI index and BNQ standard