From Sightline: Returning Seattle to Its Roots in Diverse Housing Types 

This is the story of a single city block in Seattle’s Wallingford neighborhood … bordered by North 36th and 37th Streets and Burke and Meridian Avenues.



The city has zoned the block single-family, allowing only one detached home per lot (plus accessory dwelling units, should residents choose to build them). Under this zoning, this little block should only be able to host 24 households–one per parcel. Yet in reality, the block provides shelter for 37 households, more than one-and-a-half times its zoned capacity. …

To what do these 13 households owe their housing in this coveted neighborhood?

To Seattle’s zoning history. The block includes 5 duplexes, a quadplex, and a 6-unit apartment building, which together host these 13 additional households.

Here’s the catch, though: none of these structures could be built today. They are remnants of the neighborhood’s more flexible zoning history, which permitted a greater diversity of housing types, making room for more people to enjoy and bring life to this corner of Seattle. …

Why does this all matter? Because Seattle now has the chance to once again open its single-family zones to a broader mix of housing, including duplexes and triplexes. Returning the city to its more flexible zoning past could provide housing for thousands of additional families.

Full article here.