In the crystal, the title compound, C(12)H(19)BO(4), exists as a centrosymmetric O-H⋯O hydrogen-bonded dimer. Dimers are linked via C-H⋯O hydrogen bonds, generating an infinite zigzag chain oriented parallel to [1[Formula: see text]1]. The chains are assembled, giving sheets aligned parallel to (21[Formula: see text]) and inter-connected by weak C-H⋯π inter-actions, producing a three-dimensional network.