Experimental densities, viscosities, and heat capacities were measured over the entire mole fraction range for the binary mixture of 1,4-butanediol + water mixtures over a temperature range. From these data, excess molar volumes, deviations in viscosity, and excess molar heat, capacities were computed. The V-E, Deltaeta, and C-p(E) were fitted to the Redlich-Kister equation using a multiparametric nonlinear regression analysis. Estimated coefficients and standard error values for the mixing quantities are presented. V-E is negative for 1,4-butanediol + water mixtures at all temperatures and over the entire compositions. Deltaeta vs x(1) shows sinusoidal shape. The values of C-p(E) are positive in the whole range of mole fraction and increase with raising temperature at constant x(1). The P curve has large maximum values located in the x(1) = 0.23.