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How to set up a home security system

Alarms are a hardware-plus-monitoring purchase wrapped in a multi-year contract. The real price is what you pay over five years — and who owns the equipment when you cancel — not the installer special on the sticker.

MA low-voltage licensing checked — In Massachusetts, alarm and security wiring is regulated low-voltage work — most installs require a Class C (Systems Technician) or Class D (Telecommunications) licensed contractor. We confirm the license before quoting.
Contract terms in plain English — We surface the cancellation policy, equipment ownership, and post-promo monitoring fee before you sign — not after.
Permits & false-alarm rules called out — Most RI/MA municipalities require an alarm permit and assess false-alarm fines after 1-3 incidents per year. We flag the local rule with the quote.
DIY, hybrid, or pro — your call — We will tell you when a $300 SimpliSafe kit covers the threat model and when a wired pro install is worth $3,000+.
Get a quoteWhat it usually costs
Hardware $250–800 DIY · $800–2,500 pro-installed wireless · $1,500–5,000+ wired-pro · Monitoring $10–65/moper monitored system / per camera / per month

DIY systems (Ring, SimpliSafe, Eufy) run $250–800 in hardware plus $10–30/month for optional monitoring, no contract. Pro-installed (ADT, Vivint, Brinks) run $0–300 install (subsidized) plus $35–65/month on a 3-5 year contract. Fully wired pro systems with integrated cameras and access control start at $1,500 install and climb past $5,000.

Equipment ownership, contract length, monitoring tier (self vs. pro vs. cellular with backup), camera count and type (battery vs. PoE), and whether the home is already wired all move the five-year total more than the headline install price.

See what drives price

How we price it

These are the factors that move a quote up or down. Knowing them helps you share the right context upfront so we can quote your specific situation accurately — and so you can compare bids on apples-to-apples scope.

DIY vs. pro-installed vs. wired
Primary driver

A DIY kit (SimpliSafe, Ring Alarm Pro, Eufy) is $250–800 hardware, you own it, and monitoring is month-to-month at $10–30. Pro-installed wireless (ADT, Vivint, Brinks) subsidizes the hardware against a 3-5 year monitoring contract at $35–65/month — the headline install is cheap, the lifetime cost is not. Wired pro installs (low-voltage runs in finished walls, PoE cameras, integrated access control) are real construction work and priced like it. Pick the tier that matches the threat model and how long you plan to stay in the house.

Benchmark:DIY $250–800 hardware · Pro wireless $0–300 install + $35–65/mo · Wired pro $1,500–5,000+ install + $30–65/mo
Monitoring tier & connection path
Primary driver

Self-monitoring (you get the push notification) is free or $5/mo. Professional monitoring (UL-listed central station, police/fire dispatch) is $20–35/mo for DIY platforms and $35–65/mo for traditional pro brands. The connection matters as much as the tier: WiFi-only is the cheapest and the most defeatable; cellular backup (LTE module) is the standard for pro monitoring; dual-path (cellular + IP) is required for UL-certified commercial-grade. Ask which path the alarm uses to reach the central station if WiFi or power is cut.

Benchmark:Self-monitor $0–10/mo · DIY pro-monitor $20–35/mo · Traditional pro-monitor $35–65/mo · Cellular module $5–15/mo add-on
Cameras: count, type, and power
Primary driver

Battery cameras (Ring, Arlo, Eufy) are $100–250 each and install in 15 minutes — the tradeoff is recharging or swapping batteries every 2-6 months and lower frame rates. Wired AC cameras are $150–300 each plus electrical work. PoE (Power-over-Ethernet) cameras are $200–500 each, need a Cat6 run to a PoE switch, and are the standard for serious 24/7 coverage with local NVR storage. Doorbell cams add $150–350 plus a chime transformer check. Five PoE cameras with an NVR and 4TB of storage is a real $2,000–4,000 line item.

Benchmark:Battery cam $100–250 ea · AC-wired $150–300 ea · PoE $200–500 ea + $15–40/drop wiring · Doorbell $150–350 · NVR + storage $400–900
Sensor count & coverage scope
Secondary

Door/window contacts run $20–35 each, motion sensors $30–60, glass-break $40–80, smoke/CO combo $50–100, water sensors $20–40. A typical 3-bedroom whole-home package is 8-15 door/window contacts, 2-3 motions, and 1-2 environmental sensors — figure $400–900 in sensors alone before the panel and cameras. Skipping sensors to hit a price is how you end up with an alarm that does not detect the back patio slider.

Benchmark:Door/window $20–35 ea · Motion $30–60 ea · Glass-break $40–80 ea · Smoke/CO $50–100 ea
Smart home & network integration
Secondary

If you want the alarm to talk to smart locks, lighting, garage doors, or thermostats, the platform choice matters. Z-Wave and Zigbee are the established protocols; Matter is finally arriving in 2026 systems. Many pro-installed systems are walled gardens (Vivint, ADT Command) that integrate well within their ecosystem and poorly outside. If you already run Home Assistant, HomeKit, or Alexa-heavy automations, ask which hubs and protocols the alarm exposes before signing.

Benchmark:Hub upgrade $100–300 · Smart lock $150–350 · Network upgrade (mesh/PoE switch) $200–800
Wiring & rough-in (new construction or remodel)
Situational

During a remodel or new build, pulling Cat6 for PoE cameras and low-voltage cable for sensors is a fraction of what it costs to retrofit a finished home. Pre-wire for a 5-camera, 12-sensor system is $1,500–3,000 if done while the walls are open; the same retrofit through finished drywall is $4,000–8,000+ because of fish-tape and patch work. If you are renovating, scope the alarm rough-in before drywall.

Benchmark:New-construction rough-in $1,500–3,000 · Retrofit (finished walls) $4,000–8,000+ · Per-drop low-voltage pull $75–200
Permit, false-alarm fines, and local registration
Situational

Most RI/MA cities require an annual alarm permit ($25–75/year) and fine repeated false alarms ($50–200 per incident after the first 1-3 free per year). A good installer registers the system as part of the install and walks you through false-alarm avoidance (motion-aware pet sensors, exit-delay training). A bad installer leaves you to discover the fine schedule on your own.

Benchmark:Permit $25–75/yr · False-alarm fines $50–200 per incident after free allowance

What else might come up

Most projects touch more than one trade. Here's where this one usually overlaps with others — so you can plan ahead instead of scrambling.

Electrician
— Anytime AC-wired cameras, hardwired panels, or PoE switches with dedicated circuits are part of the design.

Low-voltage runs are usually within the alarm contractor scope, but a new dedicated 15A circuit for the panel/NVR closet, transformer upgrades for doorbell cams, or surge protection on a PoE switch is line-voltage work. In MA, that is Class A electrician territory.

Network / WiFi upgrade
— Before a camera-heavy install, especially with 4 or more PoE or WiFi cameras streaming simultaneously.

Older single-router setups bottleneck on 4K camera streams and degrade NVR reliability. A mesh upgrade (eero, Orbi, UniFi) or dedicated PoE switch + Ethernet backhaul is often $200–800 of network work that prevents 50% of the "my cameras keep dropping" support calls.

Smart home integration
— When you want alarm events to trigger lights, locks, garage doors, or scenes — or when you already run Home Assistant/HomeKit/Alexa.

The platform choice (Z-Wave vs. Matter vs. brand-walled-garden) determines what is possible. Sequencing the smart home design before the alarm purchase usually saves a regrettable swap 12-24 months later.

Carpentry / finish work
— Retrofitting wired sensors or PoE camera runs through finished walls.

Fish-tape pulls through insulated cavities leave drywall patches, paint touch-ups, and occasional trim repair. Either bundle the patch work with the alarm contractor or have a finish carpenter on standby — alarm installers vary widely in patch quality.

Locksmith
— Smart-lock retrofits where the existing door hardware is non-standard, the door is sagging, or strike plates need reinforcement.

Smart locks assume a standard ANSI Grade 2 prep. Older RI/MA homes (especially pre-1950 doors) often need a locksmith to rework the mortise, square the door, or add a reinforced strike before the smart lock seats correctly.

What to send when you reach out
Send us:
  • Approximate square footage and number of stories
  • How many exterior doors and ground-floor windows (for sensor count)
  • Whether you want cameras — and if so, how many and which areas (front door, driveway, back yard, garage)
  • Existing infrastructure: WiFi router model, whether the basement has Cat6 runs, whether the home has existing low-voltage wiring
  • How long you plan to stay in the home (drives DIY vs. wired-pro decision)
  • Pets and pet weights (drives motion sensor selection)
Helps a lot if you know it:
  • Photos of the front door, back door, breaker panel, and the area where the alarm panel would mount
  • Whether you already own any smart-home gear (Ring, Nest, HomeKit, Alexa, Google) you want integrated
  • Whether the home is on a private security patrol or in a neighborhood that already has one
  • Insurance carrier — some offer alarm-system discounts that affect ROI math
  • Whether you have had break-ins, package theft, or specific concerns in the neighborhood
Worth flagging if you see any of these — they shape the diagnosis:
  • Recent break-in or attempted entry on the property or block
  • Detached structures (garage, shed, ADU) that should also be covered
  • Vacation home or seasonal absences longer than a week at a time
  • Family members with restraining orders or specific personal-safety concerns
  • History of false alarms or unresolved alarm permit violations with the city
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