A modular trowel handle device comprises a handle section to provide a handle interface for a user of the trowel handle and a post extending from the handle section. A mounting surface is coupled to the post and extends generally parallel to the handle section. The mounting surface includes a plurality of fasteners extending therefrom or formed therein. A trowel blade receiving plate includes engaging structure configured to engage a connector of a trowel blade and a plurality of corresponding fasteners extending therefrom or formed therein. The trowel blade receiving plate is coupled to the mounting surface by the fasteners and is formed from a different material than the mounting surface.