For now there are still enough modest-sized homes in Portland's formerly single-family residential neighborhoods to lull people into thinking that the livability of these areas will persist. It's easy to imagine their yard trees will continue to offer shade, places for birds to perch, and relief from staring all day into computer and phone screens.
But as infill proceeds to maximize the buildable footprint of each lot, adequate space for large trees is not being saved. And that is radically altering the character of these neighborhoods that drew people to them in the first place. Here is future Portland, a future where trees have been denied adequate space and are relegated to tiny setbacks. People will have to make do with dwarf trees or none visible from their window. Gone will be the soaring oaks, tulip trees, sycamores, lindens, maples, beeches, and native Douglas-firs.
Our canopy of large-form trees will shrink to scattered oases in increasingly overcrowded parks or in wide planting strips in a few lucky higher-income neighborhoods.