The current study is ambitious to develop a hybrid composite specimen for evaluating fire resistance characteristics and performing model analysis for validating theoretical and numerical frequencies under cantilever and rigidly fixed support conditions. The composite test specimens are developed using hemp and banana fibers by applying the traditional hand layup fabrication technique. The focus on the use of various natural fibers is very rapid in both domestic and industrial applications. Natural fibers are handy in availability and are possesses extremely good mechanical, chemical and thermal properties. This work is focused on developing the composite specimen according to ASTM –D2863-87, for evaluating fire resistance characteristics. This work also includes theoretical and numerical validation of natural frequency under cantilever and rigidly fixed conditions. The finite Element Analysis (FEM) tool is used to validate the theoretical frequency. Through the statistical analysis, it is concluded that the developed composite specimen showcases good fire resisting property up to a temperature of 175o c with a good fire propagation time of 6minutes. It also exhibits excellent bonding strength up to a temperature of 95o c. It was found that the natural frequency calculated numerically using Roark’s formula closely satisfied with the values of theoretically obtained frequency from the Finite Element Method (FEM). The maximum natural frequency developed under cantilever support is 421.04Hz and 626.82Hz for fixed support conditions.