CONTRACTOR GLOSSARY · PERMITS & INSPECTIONS
What is a Low-voltage permit?
A low-voltage permit covers systems like data, security, audio, and control wiring that run below standard line voltage — often permitted separately from line-voltage electrical work.
Structured cabling, alarm and security wiring, AV, and control systems run at low voltage, and many jurisdictions permit them separately from line-voltage work — sometimes under different license classes. On a commercial fit-out, the low-voltage permit frequently rides alongside the main wiring permit and the fire-alarm permit as a third open file on the same address.
Because low-voltage scopes often finish on a different schedule than power, their permits are easy to lose track of — a common source of stray open permits at closeout.
Common questions
Is low-voltage work permitted separately?
Frequently, yes — many jurisdictions issue separate low-voltage or systems permits, and fire alarm is often its own permit as well. Check local practice.
Related terms
RevnuPros tracks the thing, not just the word
Permits to sign-off, T&M tags to signature, materials to billed through, retainage to released — built for subcontractors. Browse the full contractor glossary or the Massachusetts permit guide.
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