Los Angeles County Commercial Mechanical & HVAC Permit Calculator
Official fee schedule logic based on LA County Code Title 26 Building Code Fee Table 1-A. Includes plan review fees, technology surcharges, and prerequisite contractor bond rules.
- AHJ Authority
- LA County Dept of Public Works & LADBS
- Enforced Ordinance
- LA County Code Title 26 Building Code Fee Table 1-A
- Plan Check SLA
- 20 - 30 Business Days
- Surety Bond Required
- $25,000
Los Angeles County Commercial Permit Fee Estimator
Tier Valuation Formula: $1,665 base fee + $3.80 per $1,000 above $250,000 valuation.
Mandatory Contractor Prerequisites & Submittal Checklist
Los Angeles County AHJ RequirementsContractor Surety License Bond
Los Angeles County requires an active $25,000 CSLB License & Street Use Bond on file prior to plan submittal.
Commercial COI Liability ($1M+)
Minimum $2.0M General Liability COI naming Los Angeles County Building Dept as Certificate Holder.
Commercial Mechanical & HVAC Submittal Rules in Los Angeles County
Specialized trade submittals for Commercial Mechanical & HVAC in Los Angeles County, California are administered by LA County Dept of Public Works & LADBS. Permits are required prior to installing, extending, replacing, or altering any mechanical, electrical, plumbing, structural, or life-safety infrastructure under LA County Code Title 26 Building Code Fee Table 1-A.
Intake review for Commercial Mechanical & HVAC requires verified trade licensing, minimum contractor general liability COI filings ($1,000,000+), and compliance with enforced regional code editions (Mandatory 2025 California Building Code (CBC Title 24) and Seismic Design Category D/E/F.).
Mandatory Submittal Plan Documents & PE Engineering Stamps
Plans submitted to LA County Dept of Public Works & LADBS for Commercial Mechanical & HVAC must include scaled engineering drawings and specifications:
- Title 24 Mechanical Forms
Inspection Sequence for Commercial Mechanical & HVAC
Work performed under a Commercial Mechanical & HVAC permit in Los Angeles County requires mandatory rough-in and final field inspections. Rough-in inspections must be conducted and signed off by the municipal inspector prior to covering or concealing any piping, ductwork, structural framing, or electrical conductors. Final inspection and system testing are required for building certificate of completion issuance.
LA County Dept of Public Works & LADBS Official Building Department
900 S Fremont Ave, Alhambra, CA 91803 | Phone: (626) 458-3173