Montgomery County Commercial Mechanical & HVAC Systems Permit Calculator
Official fee schedule logic based on Montgomery County Code Chapter 8. Includes plan review fees, technology surcharges, and prerequisite contractor bond rules.
- AHJ Authority
- Montgomery County Dept of Permitting Services
- Enforced Ordinance
- Montgomery County Code Chapter 8
- Plan Check SLA
- 14 - 20 Business Days
- Surety Bond Required
- $15,000
Montgomery 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
Montgomery County AHJ RequirementsContractor Surety License Bond
Montgomery County requires an active $15,000 Maryland License & Public Right-of-Way Bond on file prior to plan submittal.
Commercial COI Liability ($1M+)
Minimum $1.0M General Liability COI naming Montgomery County Building Dept as Certificate Holder.
Commercial Mechanical & HVAC Systems Submittal Rules in Montgomery County
Specialized trade submittals for Commercial Mechanical & HVAC Systems in Montgomery County, Maryland are administered by Montgomery County Dept of Permitting Services. Permits are required prior to installing, extending, replacing, or altering any mechanical, electrical, plumbing, structural, or life-safety infrastructure under Montgomery County Code Chapter 8.
Intake review for Commercial Mechanical & HVAC Systems requires verified trade licensing, minimum contractor general liability COI filings ($1,000,000+), and compliance with enforced regional code editions (Maryland Building Performance Standards (MBPS).).
Mandatory Submittal Plan Documents & PE Engineering Stamps
Plans submitted to Montgomery County Dept of Permitting Services for Commercial Mechanical & HVAC Systems must include scaled engineering drawings and specifications:
- MEP Mechanical Load Calculations
- COMcheck Energy Compliance Form
Inspection Sequence for Commercial Mechanical & HVAC Systems
Work performed under a Commercial Mechanical & HVAC Systems permit in Montgomery 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.
Montgomery County Dept of Permitting Services Official Building Department
2425 Reedie Dr, Wheaton, MD 20902 | Phone: (240) 777-0311