Currently the Portland Club, the Hunnewell-Shepley House was designed by prominent early American architect Alexander Parris. Three stories high, the building is constructed of brick on the sides and wood frame with clapboards on the front and rear. The facade is symmetrical with a centered entry door. The door is flanked by sidelights and topped by an elliptical fanlight window. The second floor window above the entry is a Palladian window, a large arch-topped center window framed by two smaller rectangular windows.

The Old Morrell House is a two-story Federal-style dwelling with a clapboard exterior, gable roof, and central chimney. The front facade is symmetrical with a central doorway framed by simple pilasters and topped with a transom and projecting cornice. The house is on a tract of land once known as Kittery Common. The original owner of the house was Winthrop Morrell. The Morrell family were one of the first settlers in the area. Winthrop's great-grandfather, John Morrell, was given the land by his father-in-law. A log house was built by John Morrell, Jr., here in 1640. Morrell, Jr.

Found on Chadbourne Ridge Road, the Elder Grey Meeting House was originally built at the foot of the Ossippee Pond in North Waterboro and served as a Union church with Baptist affiliations. Elder James Grey was one of the early pastors here who served as the spiritual leader until his death in 1856. He was so loved by the congregation that the Meeting House was moved four miles to its current location in 1832 to be nearer to the aging pastor's house. With a decline in the congregation in the 1880s the Meeting House began to fall into disrepair.

The John Watson House, located in a rural area east of the Saco River, is a two-story wood framed building with a hipped roof, large central chimney, and clapboard siding. The Federal-style house sits on a granite foundation and has a central entrance. The door is flanked by sidelights with a recessed rectangular panel below each. A broad louvered fan extends over both the door and its adjoining sidelights. Later, two one-story Colonial Revival-style wings were added on both sides of the dwelling. One wing connects the house to a one-and-a-half story shed.

Constructed for the storage of gun powder, armaments, and field supplies, the Powder House is a small brick gable-sided structure. It sits on a high ridge, providing an expansive view of the Kennebec River. It has no windows and the brick is laid in American or common-bond pattern, with a course of short end bricks laid between several courses of long sided bricks. The Powder House is one of three surviving early-nineteenth-century magazines in the state, though the other two were constructed in response to the War of 1812.

Located on Jones Road, the Abel Jones House is a two-story structure that was originally oriented south. Thus, the house when first completed reflected Federal-style elements, such as a side-gabled roof and a symmetrical front facade with a central entry and a long rear ell. In the late nineteenth century, the house was remodeled to reflect the popularity of the Italianate style by changing the orientation towards Jones Road and constructing a hood supported by heavy brackets over the new entry. The original entry was removed.

The Chaloner House, located on Pleasant Street, likely served as an inn and was owned by William Chaloner from 1818 to 1834. The Federal-style building was erected in phases on a rise overlooking the Narrows waterfront. It is an unusual plan with two primary entrances and three formal front rooms on each floor with small secondary rooms under a salt-box addition. The east elevation is sheathed by clapboard and the others are sheathed by shingles. Two full stories are visible from Pleasant Street with a short one-and-a-half stories located in the rear.

Now part of the University of Southern Maine (USM) Gorham campus, the McLellan House is thought to be the oldest known brick house in Cumberland County. It is two stories high with a side-gabled roof. The gable ends are clapboard sided. The brick is laid in Flemish bond, a pattern that alternates the long and short faces of the brick, on the facade and north elevation. The facade is symmetrical with a central entry door. The entry door and the first-floor windows are arched. The house's only ornamentation is in the bonding pattern of the brick and the arches over the windows.

The Saco Historic District occupies 103 acres of land running perpendicular to the Saco River with Main Street in the center and extending into and beyond North and Beach Streets. The district consists of 206 buildings with seventeen constructed prior to 1820. The earliest buildings, the Solomon Coit House and Daniel Page House, date to the late eighteenth century. The district encompasses a large variety of architectural styles that reflect the complex history of the city. Saco came into existence with the establishment of the timber industry as early as 1716.

Comprised of twenty buildings along either side of South Street, the South Street Historic District is a cohesive residential area south of Main Street. The homes share similar building materials, heights, setbacks from the street, and lot sizes. Houses dating from 1820 and earlier are typical of the Federal period, with symmetrical facades, a central entry framed by sidelight windows and a fanlight, and clapboard siding. Some feature later additions such as denticulated cornices and two-story entries. The only non-residential building in the district in the Baxter Memorial Library.