Exhibit 31.1

Certifications

I, Robert Buck, certify that:

1.I have reviewed this quarterly report on Form 10-Q/A of TopBuild Corp.; and
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

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Date: November 7, 2024

/s/ Robert Buck