Southern Ohio homes were often also built in Federal style, but differed from those in the North. Adena, the home of Thomas Worthington is a classic example of Georgian Colonial style (similar to Federal style but with more symmetrical lines and fewer embellishments) and resembles a plantation house of Virginia. The Golden Lamb Inn, built in Lebanon for travelers between Dayton and Cincinnati, was built in the Federal style in 1815. In 1820, Martin Baum (1765-1831), one of Cincinnati's early merchants, began work on his Federal house in the Palladian style.

Central Ohio's architecture differed from that of the north and south. Predominantly settled by Pennsylvania German and Scotch-Irish settlers, most homes in the area were built of stone, although some were built of logs. The Greek Revival style was more common in this area. Beginning around 1814, German settlers in Columbus began building what is now called the German Village neighborhood.

Common Architectural Styles of the Nineteenth Century

Greek Revival: Archaeological investigations conducted during the first quarter of the 19th century produced measured drawings of Greek and Roman temples and inspired the Greek Revival style (circa 1835-1860). As with the Federal style, Greek Revival depends on classically-derived symmetrical proportions and details. Buildings were constructed to resemble Greek temples, and typically included a trabeated, or recessed, entryway surrounded by a porch with Doric or Ionic columns. In Lebanon, Ohio, lawyer John Milton Williams built Glendower mansion in the Greek Revival style, and in Toledo the "House of Four Pillars" was built around 1835. The Ohio statehouse, completed in 1867, is in the Greek Revival style and was modeled after the Parthenon in Greece.

Gothic Revival: Almost concurrent with the Greek Revival style, the development of the Gothic Revival (circa 1835-1870) was an outgrowth of Romanticism and the rejection of classical styles. As its name suggests, the style was based on medieval forms and motifs (most notably the pointed arch and its emphasis on the vertical). Whether a high style church or a modest cottage, Gothic Revival buildings shared some key features: vertical lines, narrow lancet windows, decorative bargeboard or "gingerbread," steeply-pitched roofs (often cross-gabled), stained glass or diamond paned sashes, dormers, towers (on churches), and tall chimney stacks. In Tiffin, the Truman Bagby house (1855) and Oak Hill cottage (1847) in Mansfield exemplify Gothic Revival style.

Romanesque Revival: Inspired by German and Northern Italian/Lombard architecture, the Romanesque Revival (circa 1850-1880), was more common for public architecture, churches and industrial buildings than for residences. The style has some readily-identifiable features: monochromatic masonry construction, rounded arches, and carved archivolts for window and door openings, brick corbelling and belt courses, and large square or polygonal towers with pyramid roofs. Public buildings in the Romanesque style include the Brumback Library (1901) in Van Wert, the City Building in Springfield, and the Hamilton, Clark and Fulton county courthouses. In Springfield, the Asa Bushnell house (1888) is an excellent example of a residential building in Romanesque Revival style.