When I tell people that I have published about McMansions, the same question almost always arises: “What exactly is a McMansion?” My paper defining the McMansion answers this but in a series of posts here, I want to update the definition based on what I have seen in the last five years.

While McMansions are certainly larger than normal, in certain circumstances they can appear even larger than their square footage: when constructed next to smaller homes (often teardowns, sometimes infill properties) or when squeezed onto small lots (so that the homes seem to be bursting off the property). While I know the second case does happen quite a bit, most of the McMansion coverage of this trait in recent years focuses on teardown properties. Some patterns I’ve observed:

1. The typical case involves someone from outside the neighborhood purchasing an older home (often a postwar house), demolishing it, and constructing a significantly larger home and/or a home that has a different architectural style than nearby homes. This one picture is a great illustration. Note that the new home does not necessarily have to be over 3,000 square feet or even include the worst McMansion architecture; it just has to be different from the existing homes.
2. Media coverage of teardown McMansions is overwhelmingly negative. This is likely the issue only comes up neighbors upset over the construction of a teardown McMansion start looking for ways to stop the construction or limit future construction. On the flip side, it is hard to know how many teardown McMansions are constructed without much furor.
3. It is hard to know exactly what motivates neighbors to complain so vociferously about teardown McMansions. Americans seem to want the ability to buy new homes in good neighborhoods (balancing modern features with valuable locations) but don’t like what it happens to them. The complaints often fall into two camps. First, those who live directly adjacent to a teardown may have a range of new issues to confront: people able to see in their windows, a hulking property next door, losing sunlight, the older home now looking dated or different. Second, the larger issue is often couched in terms of the character of the neighborhood. People feel that when they move to a particular place, that street or neighborhood should stay similar – after all, they liked its features enough that they moved there. A teardown McMansion threatens that.
4. The fights between neighbors can be quite contentious, a rarity in many suburban communities where middle-class decorum suggests conflict avoidance is best. Lawuits occur (example and example), and some neighbors may even pool their resources to buy a nearby home and save it from being torn down. But, if the foundation of American life is owning a home, perhaps it is not surprising that such conflict arises when owners perceive their home to be under threat. See my six steps for responding to a nearby teardown McMansion.
5. These conflicts often involve local officials. Numerous communities across the United States have guidelines for teardowns (see the example of Austin several years ago and Los Angeles more recently). Outside of historic preservation districts, these guidelines typically limit the size of the new home (through guidelines like a Floor Area Ratio) and/or provide guidance on particular architectural features.
6. The teardown debates tend to put local officials in a strange position. Whose rights should they defend? Property owners? If so, do they want to allow long-time residents to have a voice in shaping their own neighborhoods or do they want individual owners to be able to sell their property at a good profit? Can they openly support builders and developers? I suspect most communities want to – growth, particularly high-end houses, is an important marker of vitality – but you don’t want to always run roughshod over your constituents. Teardowns are most common in neighborhoods and communities that are already well off – see recent evidence from the Chicago region – and this tends to pit already well-off community members versus well-off outsiders.

Teardown McMansions are a subset of McMansions as a whole, often constructed in desirable neighborhoods and sometimes raising the ire of neighbors and concerned citizens. Balancing the rights of neighbors and property owners will likely continue to be a sticky issue for many local governments.