In the early 20th century, building houses on spec became a trend. During the “FROM SPECULATION TO PRESERVATION: RICE BROS’ CRAFTSMAN HOMES IN IRVINGTON” lecture, historic-preservation consultants Kimberli Fitzgerald and Amy McFeeters-Krone will discuss the architecture of Robert and Archie Rice, the contractors who used plans from Craftsman magazine and other sources to design their homes, many of which are in Portland’s Irvington neighborhood.

In the United States, green buildings are attracting the attention of architects, builders, public officials, environmentalists and homeowners, as they come to realize the important role historic buildings play in sustainable development.

It’s the personal touches that make your home unique. In “ACCESSORIZING,” a Portland Community College class that interior designer Pamela Sandall teaches, you’ll learn professional tips on creating visual impact, with a special focus on window dressing.

At Portland Community College’s “SEASONAL DECORATING AND BRINGING THE OUTSIDE IN,” Janie Mayer will explain how to use color and inspiration from the outdoors to improve the look of the inside of your home.

In our HGTV world, having the right furniture isn’t enough; you also need to know how to artfully arrange it.