In 2017, when California relaxed the rules for obtaining building permits for accessory dwelling units — otherwise known as ADUs or “granny flats” — on single-family residential properties, it ignited a building industry gold rush of sorts and ushered in the dawn of the microdeveloper.
Now, legally permitted ADUs are becoming more commonplace as property owners build from scratch or transform carriage houses, backyard cottages and garage apartments into units that proponents say can ease Southern California’s housing crisis.
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