Not sure if you would consider this big box, but we’ve had a good experience buying two different vanities from Bath Depot in Ancaster. Quality has been good so far (have had one for 1.5 yrs, the other was more recently) and their customer service was great.
Barton bath and floor at Barton & Centennial Plumbing center at Barton & Kenora
Stay away from wayfair.
I Deal Vanities in Brantford or Urban Interiors on Nebo.
Not sure if you would consider this big box, but we’ve had a good experience buying two different vanities from Bath Depot in Ancaster. Quality has been good so far (have had one for 1.5 yrs, the other was more recently) and their customer service was great.
Plumbing Centre on Barton. Guys there are great and know their stuff.
Barton Bath and Tile, just west of Centennial.
I would like to recommend to be sure that whatever you buy has a CSA proof. Believe me if something bad happens you will lose your insurance coverage.