CSFM-Compliant Fire Alarm Design for an Existing Commercial Building: Omni Law Group – Campbell, CA

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At a Glance

Pragmatic PE designed a new fire alarm system for an existing commercial building in Campbell, adding detection, notification, and control panel infrastructure where none existed before. Early attention to CSFM device compliance and complete permit calculations helped secure AHJ approval with minimal back-and-forth.

Project Specifications 

Category: Commercial

Services Provided: Fire Alarm Engineering

Completion Date: 2026

Owner: Omni Law Group

Project Description

Lead

Omni Law Group needed a new fire alarm system integrated into an existing commercial building in Campbell, California. Pragmatic PE developed the full fire alarm design, including device layout, circuit performance verification, and permit documentation, coordinating directly with the contractor throughout the AHJ approval process. Structuring the design around CSFM-listed device selections from the start kept the permit path clean and reduced rework exposure at plan check.

Scope of Work

Pragmatic PE led the full fire alarm design for the existing commercial building.

Fire Alarm Design

•   Developed a strobe notification layout to confirm full room coverage before permit submission

•   Positioned smoke detection devices to address occupancy-based placement factors throughout the building

System Performance Verification

•   Calculated voltage drop across notification circuits to confirm alarm-condition performance ahead of installation

•   Determined battery capacity for the fire alarm control panel to support standby and alarm operation

Permitting and AHJ Coordination

•   Selected CSFM-listed devices to align with California State Fire Marshal product recognition

•   Coordinated permit drawing packages and plan check responses to maintain forward progress with the AHJ

Challenges and Solutions

Constraint: Adding a new fire alarm system to an existing building required confirming device coverage within the existing floor plan before permit submission, without the flexibility of new construction.

Response: Pragmatic PE developed the strobe layout and detector placement to confirm full room coverage before submittal, reducing the risk of field corrections after permit issuance.

Constraint: California State Fire Marshal listing recognition narrowed device options and needed to be confirmed early to avoid substitution delays during permitting.

Response: Pragmatic PE specified CSFM-listed devices from the outset, preventing permit-stage substitutions that could have triggered additional review.

Constraint: Plan check comments from the AHJ required coordinated, timely responses to avoid schedule impact to the contractor.

Response: Pragmatic PE worked directly with the contractor to address comments and resubmit promptly, keeping the permit path on track.

Results and Impact

•   Permit secured with minimal rework, supported by complete calculations and CSFM-compliant device selections at first submission

•   Plan check comments addressed through direct contractor coordination, avoiding schedule disruption

•   Full room coverage confirmed for notification and detection before construction, reducing field-discovered gaps

•   System reliability validated through circuit and battery calculations before installation began