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Low Voltage Nation
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2,202 posts
Permits & Licensing
California requires a C-7 Low Voltage Systems license from CSLB to install intercom systems professionally. Most residential installations are permit-exempt under 50V, while commercial projects require permits. The C-7 license requires 4 years experience and two exams.
Feb 7, 2026
Permits & Licensing
Florida requires an EF or EG license for burglar alarm installation. EF covers all alarms including fire; EG covers everything except fire. Complete guide to ECLB licensing, exams, and experience requirements.
Feb 7, 2026
Permits & Licensing
Florida requires a Limited Energy Specialty Contractor license for intercom installation. Learn about ECLB certification, exam requirements, experience needed, and city-specific permit requirements across Florida.
Feb 7, 2026
Permits & Licensing
Texas REQUIRES a DPS Private Security license for burglar alarm installation. Companies need a Class B Security Contractor License, and technicians need an Alarm Systems Installer registration. Complete guide to Texas alarm licensing requirements.
Feb 7, 2026
Permits & Licensing
Texas does NOT require a state electrical license for intercom installation—low voltage work is exempt under TDLR rules. However, major cities like Houston, Dallas, and Austin have their own permitting requirements.
Feb 7, 2026
Signal Reports
This week: 2,656 new construction projects totaling $2.24 billion across 28 states. Top projects include a $244M Columbus mixed-use development and the $227M Loews Arlington III Hotel. Florida leads in project count (460), while Texas dominates in value ($1.08B).
Feb 7, 2026
Business
TREND Networks SignalTEK QT Series review: 10 gigabit copper and fiber qualification testing with cloud connectivity for commercial structured cabling contractors.
Jan 27, 2026
Permits & Licensing
Guide to intercom permit requirements in Montgomery County, Maryland. Learn when permits are required and what work is exempt.
Jan 24, 2026
Permits & Licensing
Guide to intercom permit requirements in Prince Georges County, Maryland. Learn when permits are required and what work is exempt.
Jan 24, 2026
Permits & Licensing
Guide to intercom permit requirements in Boston, Massachusetts. Learn when permits are required and what work is exempt.
Jan 24, 2026
Permits & Licensing
Guide to intercom permit requirements in Baltimore County, Maryland. Learn when permits are required, what work is exempt, and local regulations.
Jan 24, 2026
Permits & Licensing
Guide to intercom permit requirements in Baltimore, Maryland. Learn when permits are required, what work is exempt, and local regulations for intercom installations.
Jan 24, 2026
Permits & Licensing
Guide to intercom permit requirements in Anne Arundel County, Maryland. Learn when permits are required, what work is exempt, and local regulations for intercom installations.
Jan 24, 2026
Permits & Licensing
Guide to intercom permit requirements in Howard County, Maryland. Learn when permits are required, what work is exempt, and local regulations.
Jan 24, 2026
Permits & Licensing
Complete guide to intercom permit requirements in Lakewood, CO. Most intercom installations do NOT require permits.
Jan 24, 2026
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