Typically, yes. The leak wasn't present (most likely) when the place was new, so study the outside for water puddles, cracks in the stair or basement wall, or (if present) a dirty, clogged, or improper bulkhead door's drainage and water run away system. You may need to just add a bag of dirt to re-grade soil or pavers with a very minor pitch for water to run away from the stairs instead of towards. Cracks can be mortared or caulked, but only in addition to re-grading; you never want water to collect anywhere behind basement walls and floors. The water always wins and you always lose.

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