There are several features that help to identify Richardsonian Romanesque architecture. They are always built with masonry veneer usually having some rough-faced square stone incorporated. Decorative wall patterns are created with combined use of stone and brick using complementary colors. Windows are recessed (due to stone thickness) with a single pane of glass per sash often being grouped in three or more. Colonnettes on each side of arched windows are common also. Wide rounded Romanesque arches (the signature mark) are usually present appearing at porches, or above windows, or over entryways. These arches are supported by massive piers or compressed looking columns if not engaged directly to the wall surface.
Towers are another feature seen in majority of Richardsonian Romanesque house plans. Tower shapes may be polygonal or square, but round towers with conical roofs are most common. Dormers appear in many examples usually being parapet and gable; however, hipped dormers as well as eyebrow dormers occur also.