What is the 2026 cost range for a junior adu (jadu) scope adu in Los Angeles?

$91,350-$192,850, with the median landing near $142,100. The range reflects finish tier and layout complexity within the junior adu (jadu) scope; the Los Angeles labor multiplier of 1.45× vs national median is baked in.

How long does a junior adu (jadu) scope adu take in Los Angeles?

10-18 weeks of on-site construction for the junior adu (jadu) scope, plus 8-16 weeks of permit review in Los Angeles if the scope requires a permit. Cosmetic-only refreshes often skip permits; anything touching plumbing, electrical, or structural does not.

What is the single biggest budget-overrun risk for this scope?

Owner-occupancy covenants in some jurisdictions limit resale financing options — buyer must also commit to occupancy, reducing resale pool.

ADU — Junior ADU (JADU) Cost in Los Angeles, 2026

Low

$91K

$91,350

Median

$142K

$142,100

High

$193K

$192,850

Scope timeline: 10-18 weeksLos Angeles permit window: 8-16 weeksUpdated 2026-04-24

Why junior adu (jadu) × Los Angeles produces this band

A junior adu (jadu) scope for a adu in Los Angeles combines two price levers: scope and metro labor rates. JADUs carve a ≤500 SF unit out of the existing primary structure with an efficiency kitchen (no range, induction cooktop allowed) and a shared or private bath. Cheapest ADU class when the jurisdiction recognizes it. Against the national median remodel labor rate, Los Angeles runs 45% above the national median — so the junior adu (jadu) band comes in 65% below the mid-range, then scales 45% above the national median on top of that. Permit timelines for residential work in Los Angeles typically run 8-16 weeks, which is the window you plan your design and decision sequence against. This page gives you the actual 2026 Los Angeles bands for this exact combination, plus the three cost drivers Baily asks about first when scoping the project live.

What drives cost for a junior adu (jadu) scope

·Efficiency kitchen with limited plumbing (no garbage disposal in many jurisdictions)
·Independent entrance cut into an exterior wall
·Owner-occupancy covenant recording
·Shared utility metering (no new service drop)

What makes Los Angeles different

Labor — CSLB-licensed GC market is constrained post-2025 wildfire demand surge.
Labor — Union framing and electrical rates carry a 25-30% premium over the national median.
Labor — Soft-story and seismic-retrofit inventory competes for the same structural crews.
Material — West Coast port throughput sets lumber and steel pricing — 2025-2026 saw 12-18% swings quarter to quarter.
Material — Title 24 energy requirements push envelope + glazing spec higher than national average.

Los Angeles rules that affect this scope

LADBS plan check runs 8-16 weeks for typical residential remodels; expedite is available for a fee.
Title 24 Part 6 energy code adds insulation, fenestration, and HVAC requirements that add 4-8% to material cost.
LA County Mello-Act applies to coastal coastal-zone demolitions — adds 6-14 weeks for replacement-housing review.
Soft-story retrofit ordinance (LA Ordinance 183893) affects properties with tuck-under parking and adds scope for multifamily work.

Scope your adu with Baily.

Baily asks the eight questions that determine where your project lands inside the $91K-$193K band for Los Angeles and hands the scoped brief to one licensed builder.

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All LA cost guides →Ask Baily about your project →

Questions LA homeowners actually ask

$91,350-$192,850, with the median landing near $142,100. The range reflects finish tier and layout complexity within the junior adu (jadu) scope; the Los Angeles labor multiplier of 1.45× vs national median is baked in.