Regulate McMansions in order to provide more housing

Expecting population growth, Portland, Oregon is looking to limit house sizes:

The zoning changes are in the planning stages, and it won’t be until early next year that City Council will vote on whether to approve the changes.

New zoning laws could limit the size of homes, allowing single-family homes to be half the size of the lot. A standard lot in Portland’s inner eastside, which is primarily zoned for single-family homes, is 5,000 square feet. The proposed zoning code would limit that home to 2,500 square feet…

The city says it’s heard complaints over so-called “McMansions,” or homes that are much larger than the rest of the houses in a neighborhood…

The new zoning proposal also calls for increased flexibility in building duplexes, and on corner lots triplexes could be built. The city says increasing density will give families more options where to live.

This is an interesting approach to regulating McMansions. Rather than emphasize their poor architecture, excessive use of resources, or threat to neighborhood character, instead stress that the land could be used for more housing units. And because Portland has both stricter development boundaries regarding its metropolitan region as well as expectations for population growth, zoning for higher density could make sense. It would be interesting to see if this approach cuts down on criticism that property owners should be able to do what they want.

There are probably already a number of McMansions in the Portland area but it is interesting to contemplate a major city or region without any McMansions.

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