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How much does an ADU cost in Westchester?

Half of the ADU projects permitted in Westchester declare a construction value between $40,000 and $134,900. The median is $70,000, across 302 permits filed since 2023.
$40,00025th percentile
$70,000Median
$134,90075th percentile

Across all 302 permits the range runs $7,000 to $900,000. The cheapest tenth come in under $25,000, the priciest tenth over $299,900.

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What people actually declare

How many permits fall in each price band.

61$0k103$40k47$80k27$120k10$160k18$200k3$240k8$280k25$320k+

How Westchester compares

The areas closest to Westchester on price.

AreaMedianPermitsvs Westchester
Granada Hills$70,000659+0%
Sun Valley (91605)$70,000469+0%
North Hollywood (91606)$70,000410+0%
Woodland Hills (91367)$70,000401+0%
Van Nuys (91405)$70,000317+0%
Tujunga$70,000262+0%
Venice$70,000183+0%
El Sereno$70,000177+0%

Has it been getting more expensive?

YearMedian declaredPermits
2023$65,50036
2024$65,00099
2025$75,000115
2026$77,50052

302 ADU projects in Westchester. How many called you?

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