Missing middle homes, like ADUs, backyard cottages, mother-in-law suites, and duplexes provide affordable rental and purchase options than single, detached houses. But in many urban neighborhoods, zoning makes these modest choices illegal to add, retrofit, or build. Often, zoning changes -- upzones -- that would allow a return to a range of mixed-income home types is met with local opposition. One reason is that people aren't familiar with what missing middle homes look like. Photos of these modest homes help community members see how multi-family buildings fit into the community fabric.

Sightline's Modest Middle Homes Library is a resource for abundant housing advocates, urbanists, planners, and journalists. All our photos are free to use. We will continue to add more and we invite you to share your own photos with us.

Founded in 1993, Sightline Institute is committed to making the Northwest a global model of sustainability, with strong communities, a green economy, and a healthy environment. We work to promote smart policy ideas and monitor the region's progress towards sustainability. Visit us at www.sightline.org/. And find our housing and urbanism policy research and messaging resources at www.sightline.org/research/housing-urbanism/.

The photos in this photostream are curated by Sightline Institute Modest Middle Homes Library and licensed under Creative Commons Attribution 4.0 International License. Contact editor (at) sightline (dot) org with questions or submissions.