надстро́иться надстроитьсяverbperfectiveAspect partner надстра́иватьсяto be built on top, to be added, to be superimposed, to develop uponMeaningsto be built on, to be addedas an extra floor or structureExamplesНад домом будет надстроена мансарда.An attic will be built on top of the house.