Exhibit 32.1

CERTIFICATIONS PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES–OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Heritage Insurance Holdings, Inc. (the “Company”) for the quarter ended September 30, 2023, as filed with the Securities and Exchange Commission (the “Report”), I, Ernesto Garateix, the Chief Executive Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of his knowledge, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 6, 2023

By:	/s/ ERNESTO GARATEIX
Ernesto Garateix
Chief Executive Officer (Principal Executive Officer and Duly Authorized Officer)