Quebec provincial police believe there are no injuries, but emergency officials are at the site inspecting the damage.
Sgt. Gino Paré said emergency officials were alerted at 12:20 p.m. ET to the incident in Lac-des-Seize-Îles, about 100 kilometres northwest of Montreal.
"Police and firefighters are on site to confirm that there was nobody in the houses," he said. "It appears that they're not being lived in, but we want to be sure that no one was inside."
Paré said the area isn't known for landslides.
"I've been working in this area for 20 years and, to my knowledge, I've never heard of landslides,"
It was the second landslide in the area reported Tuesday.
About two hours earlier, a smaller landslide sent mud and earth onto a road in Saint-Adolphe-d'Howard, about 20 kilometres away.