Guide
Low voltage and networking — the electrician's second revenue line
Published
Low-voltage work — structured cabling, security, access control, home automation, and audio-visual — is the second-largest adjacency to residential and commercial electrical work, and the single most common revenue line electricians add when they want to grow beyond standard service. Typical 2026 pricing sits at $185–$385 per cable drop, $2,500–$12,000 for whole-home structured wiring, and $3,500–$25,000 for residential security system installs (verified April 2026 via BICSI 2026 market report, SSI Magazine 2026 install pricing survey, and regional operator pricing from TX, FL, and WA). Margin runs 42–58% on cabling and 35–50% on security and automation when the work is priced correctly. The problems are licensing, scope discipline, and training — each of which is solvable.
What "low voltage" covers
Low voltage in the US trade context generally means anything under 91 volts, often Class 2 or Class 3 per NEC Article 725. In practice, the revenue categories are:
| Category | Typical customer | Ticket size | Licensing considerations |
|---|---|---|---|
| Structured cabling (Cat6/6A, fiber) | Residential + commercial | $1,200–$45,000 | State-dependent; often a separate LV license |
| Security (intrusion, cameras) | Residential + commercial | $1,500–$75,000 | State + jurisdiction licensing, monitoring regs |
| Access control | Commercial | $4,500–$150,000 | Sometimes combined with security |
| Home automation / audio-visual | Residential | $5,000–$300,000 | See our smart home installation guide |
| Fire alarm | Commercial + multifamily | $8,500–$250,000 | Dedicated fire alarm license in most states |
| Nurse call / healthcare | Commercial | $45,000–$750,000 | Specialty certification |
Licensing varies widely. Texas requires a separate Security Contractor License issued by DPS; California requires an ACO license for alarms; Florida requires an ES alarm license. Fire alarm is almost universally a distinct license. Research your state — most do not let a general electrical license cover all LV work (verified April 2026 via NASCLA state license aggregator).
Pricing — structured cabling
Per-drop pricing for new construction and occupied-space retrofit:
| Scope | Per-drop price | Notes |
|---|---|---|
| Cat6 drop, new construction, open framing | $145–$195 | Drop price assumes 15+ drops on one trip |
| Cat6 drop, occupied space, drop ceiling | $225–$385 | Fewer drops bump per-drop price |
| Cat6 drop, occupied space, fished through walls | $385–$695 | Labor-intensive |
| Cat6A drop, new construction | $195–$275 | 10 Gigabit-capable, larger jacket |
| Multimode fiber drop (OM4) | $385–$750 | Specialty termination labor |
| Single-mode fiber drop (OS2) | $485–$950 | Fusion splice premium |
| Rack install (42U, with PDU, cable management) | $2,800–$6,500 | Labor + materials |
| Patch panel termination (48-port) | $650–$1,100 | Includes testing |
Verified April 2026 via regional integrator pricing across TX, CO, and NY, and SSI Magazine 2026 structured cabling pricing survey. Ranges reflect urban vs rural labor costs.
Pricing — residential security
Security has shifted sharply in 2026. DIY and prosumer systems (Ring, SimpliSafe, Abode) have eaten the low end of the traditional security market. Professional installers have moved up-market to pro-grade systems with monitoring contracts:
| System tier | Install price | Equipment | Monitoring |
|---|---|---|---|
| Entry pro (Alarm.com, Qolsys IQ4) | $1,500–$3,500 | Panel + 8–12 sensors + 2–4 cameras | $45–$65/mo |
| Mid pro (Alarm.com + Luxul network) | $3,500–$8,500 | Expanded sensor array, 4–8 cameras | $65–$95/mo |
| Residential commercial-grade (DMP, DSC NEO) | $8,500–$25,000 | Full perimeter, indoor, access control light | $95–$195/mo |
| Estate (DMP XR550 + Axis cameras + Genetec) | $25,000–$150,000 | Full video management, access control, monitoring | $195–$495/mo |
Monitoring revenue is the long-tail business. RMR (recurring monthly revenue) attach rates of 70–90% on installed systems are the benchmark for well-run shops [EST]. A 500-client installed base at $75/mo average is $450,000 in annual recurring revenue.
Pricing — commercial access control
Per-door pricing for commercial access control in 2026:
| Scope | Per-door price | Notes |
|---|---|---|
| Single door, existing building, cloud-based (Brivo, Openpath) | $1,500–$2,800 | Reader, lock, wiring, mounting |
| Single door, new construction | $1,200–$2,200 | Lower labor due to rough-in access |
| Higher-security door (maglock, REX, contacts, monitoring) | $2,500–$4,500 | Commercial grade |
| Elevator control (per cab per floor) | $350–$650 | Integrated with existing elevator |
| Turnstile or man-trap | $6,500–$45,000 | Specialty applications |
Cloud access control (Openpath, Brivo, Genea, Verkado) has substantially simplified the commercial integration model. Cloud-hosted head-end means no on-prem server, customers pay subscription, installer earns install plus typically a recurring kickback.
Bundling low voltage with electrical
The natural sale is bundling LV with electrical work the customer is already buying:
- New construction residential — structured wiring at rough-in adds $2,500–$8,500 to the electrical scope
- Panel upgrade — adding whole-home surge plus Cat6 runs to key rooms while the walls are open
- Remodel — adding speaker wiring, cameras, security during drywall-open phase
- Commercial tenant buildout — data cabling is almost always part of the electrical scope in TI work
See our electrical for new construction guide for how to present bundled scope to GCs.
What separates pros from dabblers
Low voltage is technically less intimidating than line voltage (no 240V death risk) but produces more callbacks than electrical work. The reasons:
- Signal integrity. Cat6 at 300 ft is a different animal from Romex at 300 ft. Termination technique matters; bending radius matters; separation from 60Hz sources matters. Poor terminations pass a visual inspection and fail at 10 Gbps.
- Programming. Alarm panels, access control, and network gear require configuration, not just installation. An electrician who cannot program a Qolsys IQ4 is going to have a bad day.
- Testing. Certification testing with a Fluke DSX-5000 or equivalent is expected on commercial projects. $8,500+ investment in test gear, plus training to produce the cert reports.
- Documentation. Rack diagrams, cable schedules, IP address plans. Electricians who do not produce these lose commercial repeat work.
The shops that move into LV successfully tend to hire or train a dedicated LV technician rather than asking general electricians to "also pull some Cat6." The skill overlap is smaller than it looks.
Software considerations
Low-voltage workflow overlaps with standard electrical service for small jobs and with project-based construction for larger ones. Common fits:
- ServiceTitan — electrical-side dispatch and agreement billing; some LV shops use for recurring security monitoring billing
- Housecall Pro — sufficient for under-8-tech LV operations
- Jobber — recurring plan management at Connect and Grow tiers
- Workiz — capable dispatch at mid tier
- D-Tools System Integrator — purpose-built for structured cabling and AV quoting
- Manitou / SedonaOffice — industry-specific tools for security monitoring RMR billing
Full comparison in our electrical contractor software overview.
Margin benchmarks
Representative gross margin bands for well-run LV shops in 2026:
| Revenue line | Gross margin |
|---|---|
| Structured cabling install | 42–58% |
| Security install (hardware + labor) | 35–50% |
| Security RMR (monitoring) | 65–85% |
| Access control install | 40–55% |
| Access control RMR (cloud sub) | 55–75% |
| Fire alarm install | 28–42% |
| Fire alarm inspection + monitoring | 55–75% |
RMR is the financial engine. A pure-install LV shop earns acceptable margins; a shop with 30%+ revenue from RMR trades at 2–3x the multiple if it ever sells [EST]. That is the long-arc reason to build RMR aggressively.
Common mistakes
- Pulling Cat6 next to 120V in the same stud bay. Induced noise, failed cert, angry commercial client.
- Under-terminating. Hand-stripping Cat6A jackets and hoping the margin holds up. Invest in proper tools.
- Ignoring test-and-cert on commercial. Not producing a Fluke cert report on commercial cabling is leaving revenue and credibility on the table.
- Mixing security licensing. Running on your electrical license when the state requires an alarm license is a serious compliance risk.
- Under-pricing monitoring. RMR at $25/mo is break-even once central station and dispatch are covered. Start at $45+.
Related: electrical contractor software overview, electrical service call pricing 2026, EV charger installation business software, commercial electrical bid management software, solar installation business software 2026.