The Gothic Revival house is characterized by steeply pitched roofs, pointed-arch windows, elaborate verge board trim along roof edges, high dormers, the use of lancet windows and other Gothic details, and board and batten siding, often set vertically rather than horizontally. The greatest concentration of classic Gothic Revival houses is in New England — but the more modest "folk Victorian" houses which were built by working-class Victorians eventually became so ubiquitous that it is almost impossible to imagine an America not covered coast-to-coast with them. In Midwestern farming communities in particular the style exhibited incredible durability, and (in Folk Victorian form) was still being built as late as the 1940's.
Octagonal houses, in particular, enjoyed a certain minor vogue in the 1850's, almost solely through the efforts of one man. Orson Fowler published a book, "The Octagon House: A Home For All", in which he claimed that the eight-sided house could provide more sunlight and more ventilation between rooms, promoted easy traffic flow, and made more efficient use of interior space for a given amount of building material. There are only a few hundred octagon houses left standing, mostly in New York, New England, and the West Coast. The splendid example pictured here is located in Irvington, New York, and is featured on page 148 of Kenneth Naversen's photobook, "East Coast Victorians: Castles & Cottages". It was built in 1860 and substantially enlarged in 1872. The house has been brilliantly restored by an architect who specializes in historic houses.
The classic Victorian styles (Gothic Revival, Italianate, Second Empire, Stick Style, Romanesque Revival, and Shingle Style) were created by professional architects, and were built mostly by the well-to-do. But the lower reaches of the middle class certainly shared the same Victorian urge to live in a fashionable house, and if they couldn't afford a professional architect, well. They could design the house themselves, or have a local carpenter do it. In either case, the design was likely to be an unprofessional but possibly still charming pastiche, including elements of styles that were still currently fashionable among the upper crust, and elements of styles that definitely were not. Also, the house would naturally tend to be smaller and plainer than the what the wealthy could afford.
The result is Folk Victorian. The house shown here (which is the Compass Rose Bed & Breakfast on Whidbey Island, Washington) is as typical as you could want, considering that Folk Victorians by definition are all over the map. This house is sort-of Gothic Revival in terms of its roof line and the two symmetric wings, but the center tower is vaguely like an Italianate villa, and there are some applied decorations that remind one of the Stick Style. One could call it Queen Anne, since the Queen Anne is also unpredictably ecclectic — but that is too simplistic. The classic Queen Anne is very elaborate (compare this house with the two pictured in the Queen Anne section), and in terms of its complexity, this house is certainly closer in spirit to the Gothic or Stick styles than it is to the Queen Anne. There are no bay windows, no balconies, no overhangs on the second floor, etc.
The exact division between Queen Anne and Folk Victorian is very fuzzy (especially considering how many of the smaller Queen Annes were hodge-podged together by local carpenters, rather than designed by architects). But, Folk Victorians were being built long before the Queen Anne style appeared on the scene, and in any case, it is still useful to make a rough distinction between the more expensive, very elaborate, architect-designed Victorians (Queen Anne) and their less-expensive, plainer, carpenter-designed cousins (Folk Victorian).
The single most distinguishing feature of the style is small vertical, horizontal, or diagonal planks placed on top of the exterior walls. The style is often associated with houses featuring enormous, overhanging, second-story porches, sometimes called "Swiss Chalet" houses. Stick Style houses which feature additional applied decoration, like that near the top of the house in the photo, are sometimes called Eastlake, after British furniture designer and arbiter of taste Charles Eastlake. (Eastlake, by the way, had no interest in architecture, and when he discovered that those balmy colonists had named an entire style of hideously un-British house decoration after him, he issued a furious disclaimer disavowing any responsibility for it.)
The most distinguishing characteristic of the style is the mansard roof, which is almost always heavily pierced with dormer windows featuring very elaborate surrounds. Colored tile patterns on the roof and iron crestings were also often incorporated. The style took its inspiration from French architecture, which had come to feature mansard roofs (named after the French architect Francois Mansart) mostly as a dodge to get around the Paris building codes. The codes limited buildings to a certain number of stories, but since the area directly under the roof was not considered to be a story, the mansard roof was a very effective way to expand the living space of a building and still remain within the law.
In America, it was only the look and the romance of the style which appealed to the Victorian upper crust, and they sometimes added corner quoins, belt courses, and other decoration to give the style even more of a Renaissance flavor. Very elaborate Second Empire mansions are sometimes referred to as "Renaissance Revival", in fact.
Called Italianate because it looked to the country villas of northern Italy for its inspiration. The style was characterized by a rectangular massing of the body of the house, often arranged picturesquely into asymmetric blocks to imitate the sprawling look of centuries-old villas in Italy that had been modified and enlarged by many generations. The style also featured low-pitched, often flat roofs; heavy supporting brackets under the eaves, often elaborately carved; and windows with heavy hoods or elaborate surrounds. The style often features a square tower or cupola, in which case it is sometimes referred to as "Tuscan".
The style was originally created for the super-wealthy, who liked to build vast vacation "cottages" by the sea, but wanted them to look rustic rather than formal. I am not certain if any of those original, vast Shingle Style houses exist or not, because the upkeep of such a huge wooden structure right beside the ocean is daunting — and who is going to bother, once the Victorian age is over? If anyone out there knows of a surviving 60-room-plus Shingle Style from the 1880's (not including hotels or other commercial buildings), I would be delighted to know about it.
The style eventually filtered down to the middle class, and many of the more modest structures they built are still standing. The Shingle Style is considered to be a completely original American style, with no direct European antecedents.
The Queen Anne style is vaguely related to "Jacobean" architecture. (Jacobean refers to English architecture during the period 1603 - 1625.) This style featured textured surfaces on buildings, including decorative patterns made of wood or stone, and various colors of shingles and slate. The Queen Anne style started from this modest beginning and metamorphosed into the beautiful houses we admire today. This style is more original (more "American", if you will) than the Gothic, Italianate, or Second Empire styles, because it became far more dynamic and pushed much further beyond its roots than did the other styles. It is a mystery where the "Queen Anne" name comes from, because the architecture during the reign of the historic Queen Anne (1665 - 1714) has little in common with Jacobean architecture.
Due to the immense expense of building in solid stone, the Romanesque Revival style was used far more often for public buildings than for private, and the bulk of the surviving examples are churches, university buildings, public libraries, etc. However, it did enjoy a certain vogue among the extremely wealthy, and any number of surviving Victorian mansions are built in the style. Most Romanesque Revival mansions share one thing with the Queen Anne houses that the middle class was building at about the same time: they feature a romantic and complex floor plan complete with towers, turrets, many gables, and so on.
Whatever the case, Colonial Revivalism was certainly a reaction against the extremely elaborate houses which had come to symbolize the High Victorian period. Colonial Revival houses looked back to the Federalist period for inspiration, and are characterized by simpler, more symmetric lines and much less gingerbread than most other 19th-century houses. The style had much in common with the Shingle Style, which began to appear at roughly the same time. Colonial Revivalism eventually evolved into the Four-Square and bungalow designs of the early 20th century. The interiors of Colonial Revival houses (especially those built before the turn of the century) are often very traditionally late Victorian, however.