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Cost guide · Sherman Oaks · LADBS (Los Angeles Department of Building & Safety)

Sherman Oaks ADU cost guide — every line, no surprises

A fixed-price Sherman Oaks ADU contract is the sum of five line items: base build, LADBS (Los Angeles Department of Building & Safety) permits and fees, design and engineering, sitework and utilities, and finishes. Below is how each one moves in Sherman Oaks specifically — and where homeowners get burned by quotes that hide them.

City-specific deep dives

Base build — what $/sqft actually covers

Base build in Sherman Oaks runs $385–$520 per square foot for a detached one-bedroom ADU at 2026 pricing. That number assumes Title 24 compliance, code-minimum insulation, mid-grade finishes, and standard MEP. Anything below $360/sqft in Sherman Oaks is either skipping permits, skipping engineering, or carrying allowance line-items that will balloon during construction.

LADBS (Los Angeles Department of Building & Safety) fees & soft costs

Sherman Oaks plan-check, school fees, sewer capacity, water meter, and utility connection fees typically land between $14,000 and $28,000. The variance is driven by lot conditions: a flat Sherman Oaks lot on existing sewer is the low end; a hillside lot needing a new lateral and water tap is the high end. We pull these numbers at feasibility, not after deposit.

Design, engineering, and soils

Architectural design, structural engineering, Title 24 compliance, and (when Sherman Oaks requires it) a geotechnical report typically run 8–11% of project cost. Hillside-zoned parcels and properties within special review overlays push this higher. We disclose the engineering scope up front so the design fee isn't a moving target.

Sitework, utilities, and the hidden 15%

Sitework in Sherman Oaks — demolition, grading, retaining if needed, sewer tie-in, water service upgrade, electrical panel upgrade to 200A — is where most "cheap" quotes blow up. Older Sherman Oaks homes nearly always need a panel upgrade and often a lateral upgrade. Budget 12–18% of project cost here. We scope this at survey, before contract.

Finishes — the only line you actually control

Finish allowances (cabinets, counters, flooring, fixtures, appliances) are the single line a Sherman Oaks homeowner can move materially up or down. Going from builder-grade to mid-luxe adds roughly $35–$60 per square foot. Going to luxury finishes can add $90+/sqft. We model three finish tiers at design so the trade-off is visible, not buried.

Sherman Oaks · Cost guide

Questions Sherman Oaks homeowners ask about cost

Direct answers, Sherman Oaks-specific.

  1. Is my Sherman Oaks lot hillside-zoned?
    If you sit north of Ventura on a graded street climbing toward Mulholland, almost certainly yes. We confirm exact overlay status at feasibility before any deposit.
  2. How long does a Sherman Oaks ADU take end-to-end?
    Flat-lot detached: 11–14 months brief-to-keys. Hillside: 14–18 months because of geotech and access logistics.
  3. Does Sherman Oaks have unique requirements that affect cost?
    Yes — LADBS (Los Angeles Department of Building & Safety) sets the local rules, and Sherman Oaks has its own plan-check rhythm. The realistic numbers above reflect 2026 Sherman Oaks conditions, not statewide averages.

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