ADU Market Data
ADUs in Sylmar (91342)
856 ADU building permits have been issued in ZIP 91342 since 2020, from Los Angeles City permit records refreshed weekly. Here is what your neighbors actually built, and how long it took.
856
ADU building permits issued since 2020
234 / 622
new builds / conversions and additions
4 mo
median time from application to permit
1,141 sq ft
median new-build ADU size
$120,000
median declared valuation, new builds
Permits issued by year
The current year shows permits issued so far, not a full-year total.
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Source: Los Angeles City Building & Safety permit records via the city's open data portal, refreshed weekly. Counts are building permits flagged as adding or changing an ADU (new construction, garage conversions, and additions) issued in ZIP 91342 from 2020 to present. Median time from application to permit covers the same permits. Valuations are the declared construction value on the permit, which typically runs below real-world project cost.