This research article reports structural and electrical (dielectric, impedance and conductivity) characteristics of La 3? modified Bi 5 Ti 3 FeO 15 multiferroic (i.e., Bi 3 La 2 Ti 3 FeO 15 ). Preliminary structural analysis of the prepared material using room temperature X-ray diffraction (XRD) data confirmed the formation of a single-phase compound in the orthorhombic crystal. The nature of scanning electron micrograph of the compound showed the uniform distribution of grains on the sample surface with less voids (high density) Detailed studies of dielectric, impedance and conduction characteristics of the material, carried out in a wide frequency range (100 Hz-1000 kHz) at different temperatures (room temperature to 500°C) using a complex impedance spectroscopy technique, have provided vital information on dielectric relaxation, conduction mechanism and role of grains, grain boundary and interface in understanding of structure-property relationship of the material.