Security System for Your New Home: A Complete Setup Guide

You've just closed on a new home or you're watching the builder put up the framing. Either way, this is the single best time to get your security system right. We've been installing security systems in Florida homes since 1967, and the biggest mistake we see new homeowners make is waiting until after they've moved in to think about security.

Whether you're buying new construction or a resale home, this guide covers the entire process: what to plan during the build, which components to prioritize, how much everything actually costs, and what matters specifically if you're in Florida.

Why New Homeowners Need Security Before Move-In Day

The first few weeks in a new home are when you're most vulnerable to break-ins, and most people don't realize it.

New construction sites are targets for theft because builders leave materials, appliances, and tools on site before the home is occupied. After you close, there's usually a window of days or weeks where the house is unoccupied while you're packing, cleaning, and coordinating your move. During that gap, your new home is sitting empty with brand-new appliances and no security system.

Even after you move in, the risk stays elevated. Boxes piled on the curb from new TVs, electronics, and furniture advertise exactly what's inside. Your routines aren't established. You don't know your neighbors yet. And in new developments where dozens of homes are still under construction, there's constant foot traffic from workers, subcontractors, and delivery drivers that makes it hard to tell who belongs and who doesn't.

Having your home security system active on move-in day eliminates this vulnerability window entirely.

New Construction vs. Existing Home: Two Different Approaches

How you approach security depends on whether your home is being built from scratch or you're buying an existing property.

New Construction: The Pre-Wire Advantage

If your home is still being built, you have an opportunity that homeowners in existing homes don't: the walls are open. Running low-voltage cable for security cameras, sensors, and your control panel is fast and inexpensive when there's no drywall in the way. Once the walls are closed up, the same job costs 3 to 5 times more.

The key is getting your security company involved during the rough-in electrical phase, after framing but before insulation and drywall. This is when your builder's electrician is already running wire throughout the house, so adding security cable to the plan is straightforward.

Existing Home: Wireless Is Your Best Friend

If you're buying a previously owned home, you likely won't have the luxury of open walls. The good news is that modern wireless security systems have eliminated most of the reasons you'd need to run wire. A professional wireless installation takes 2 to 4 hours and doesn't require any drilling through walls or fishing cable through attics.

If the previous owner had a security system, check whether the existing wiring and sensors can be reused with a new panel. A hybrid takeover module can convert old wired sensors to work with a modern wireless system, saving you money on equipment.

What to Pre-Wire During New Construction

If you're building, here's exactly what to have your builder run cable for. Even if you don't install every component right away, having the wiring in place means you can add devices later without tearing into walls.

Camera Locations (Cat6 Ethernet Cable)

Run Cat6 cable to each planned camera location. Cat6 carries both the video signal and power to the camera (called PoE, or Power over Ethernet), so you only need one cable per camera.

Recommended camera locations for a typical Florida home:

• Front door area: Covers the main entry, porch, and driveway approach
• Back yard/patio: Covers the lanai, pool area, and rear entry points
• Garage (exterior): Covers the driveway and side yard
• Side yard: Covers gate access and any secondary entry points

Terminate each cable run at a central location (utility closet, garage, or structured media panel) where your network video recorder (NVR) or camera hub will sit.

Security Panel Location (Power + Low-Voltage)

Your security panel should be mounted near your main entry point, usually by the front door or in the entryway. Run a dedicated power outlet and a Cat5e or Cat6 cable to this location. The panel needs power and a network connection for the Alarm.com cloud platform.

Door and Window Sensor Locations (Optional Pre-Wire)

Modern door and window sensors are wireless and battery-powered, so pre-wiring for these is optional. However, if you want hardwired sensors (which never need battery replacement), have your builder run 22-gauge, 4-conductor alarm wire to each exterior door and every accessible window on the first floor.

What the Pre-Wire Typically Costs

The numbers speak for themselves. Pre-wiring during construction saves you $1,800 to $4,600 on the exact same infrastructure. Even if you only pre-wire for cameras and skip the sensor wiring (since wireless sensors work great), the savings are significant.

Essential Components for a New Home Security System

Here's what a complete security system for a new home should include, listed from must-have to nice-to-have.

Must-Have Components

• Smart security panel: The hub of your system. Look for a touchscreen panel with built-in cellular communicator, Wi-Fi, battery backup, and Alarm.com compatibility. This is your control center for arming, disarming, and managing every device.
• Door/window sensors: Install sensors on every exterior door and every accessible first-floor window. These are the first line of detection for any intrusion.
• Motion detectors: Place at least one motion detector in the main hallway or living area to detect intruders who bypass a door or window sensor. Pet-immune models are available if you have dogs or cats.
• Outdoor cameras: Minimum two: one covering the front door/driveway and one covering the back yard. Security cameras with night vision, motion-activated recording, and cloud storage.
• 24/7 professional monitoring: A siren alone won't protect you. Professional monitoring means trained operators verify the alarm and dispatch police, fire, or EMS when you can't respond yourself.

Recommended Additions

• Doorbell camera: See and speak to anyone at your front door from your phone, whether you're home or not. A doorbell camera deters package theft and provides video evidence of every visitor.
• Smart locks: Lock and unlock your doors remotely, give temporary codes to guests or contractors, and set automations like "lock all doors when I arm the system."
• Glass break detectors: Add one per room with large glass doors or windows. These detect the specific sound frequency of breaking glass and trigger the alarm instantly.
• Smoke and CO detectors: Connected smoke and carbon monoxide detectors that trigger professional monitoring response, not just an audible alarm. These can save lives when you're asleep or away.
• Water leak sensors: Place near water heaters, washing machines, and under sinks. Water damage is the most common homeowner's insurance claim in Florida, and early detection prevents thousands in damage.

Smart Home Upgrades

• Smart thermostat: Control your AC remotely and set automations based on whether the alarm is armed (home/away mode). In Florida, this alone can save $20-30/month on energy bills.
• Smart lighting: Set lights to turn on automatically at sunset or when motion is detected outside. Random lighting patterns when you're on vacation make the house look occupied.
• Smart garage door: Open and close your garage from your phone, get alerts if it's left open, and set it to auto-close after a set time.

All of these devices connect through the Alarm.com smart home platform, so you control everything from one app on your phone.

Step-by-Step: Setting Up Security When You Move In

Whether your home is new construction or a resale property, here's the timeline for getting your security system operational by move-in day.

6 to 8 Weeks Before Move-In

• Choose your security company and schedule a consultation
• If new construction: provide the floor plan and coordinate with the builder for pre-wiring
• If existing home: schedule a site assessment so the installer can plan equipment placement
• Finalize your component list and monitoring plan

2 to 4 Weeks Before Move-In

• Confirm installation date (ideally 2 to 3 days before you move in)
• If new construction: verify pre-wire is complete and tested before drywall goes up
• Order any additional smart home devices (locks, thermostat, doorbell camera)

Installation Day (2 to 3 Days Before Move-In)

• Professional installation of panel, sensors, cameras, and all connected devices
• System programming and testing of every sensor and zone
• Monitoring center activation and signal verification
• App setup on your phone with login credentials and user codes
• Walk-through with the installer to learn how to arm, disarm, and use the app

Move-In Day

• System is live and monitored from the moment you start moving furniture in
• Set your entry/exit delay times (how long the system waits before triggering when you open the front door)
• Create user codes for family members
• Test the system by triggering each sensor and confirming the monitoring center receives the signal

Builder-Installed Security Systems: What to Watch For

Many home builders offer a "free" or discounted security system as part of the purchase. This sounds like a great deal, but there are things you need to check before saying yes.

The Common Setup

Builders typically partner with a national security company. They install a basic system (panel, a few door sensors, maybe a motion detector) at no upfront cost. In exchange, you sign a 3 to 5 year monitoring contract, often at $40 to $60/month.

What to Watch For

• Contract length: Builder packages often lock you into 36 to 60 months. If you want to switch providers, you may owe the remaining balance of the contract.
• Monthly rate: Compare the builder's monitoring rate to what independent security companies charge. You can often get the same or better monitoring for $25 to $35/month.
• Equipment quality: Builder packages sometimes use entry-level equipment. Ask specifically which panel, sensors, and cameras are included and compare to what you'd get from an independent installer.
• Expandability: Can you add cameras, smart locks, and automation devices to the builder's system? Or are you locked into their ecosystem?
• Monitoring provider: Where is the monitoring center located? Is it UL-Listed? Does the company own their monitoring facility, or do they subcontract to a third-party call center?
• Ownership: Do you own the equipment, or does the security company? If they own it, they can remove it if you cancel.

When the Builder's System Is Fine

If the builder uses a reputable security company with reasonable contract terms (month-to-month or 12-month contracts), fair monthly pricing, and quality equipment, there's nothing wrong with using their system. Just do the comparison first.

When to Choose Your Own

If the builder's contract is 3+ years, the monthly rate is above $40, the equipment is basic, or you want full smart home integration from day one, you're almost always better off choosing your own security company. You'll get better equipment, lower monthly costs, and the flexibility to customize the system to your needs.

What a New Home Security System Actually Costs

Here's a realistic breakdown of what you'll spend on a complete security system for a new home in 2026. These numbers reflect what we see across our installations in Sarasota, Tampa, and Fort Lauderdale.

The most popular choice for new homeowners is the Complete package. It covers all the essentials (full sensor coverage, cameras, doorbell camera, smart lock, and monitoring) without the premium add-ons that you can always add later.

Keep in mind that Florida insurance discounts of 5% to 20% on your homeowner's policy offset a meaningful portion of the monthly monitoring cost. On a typical Florida homeowner's policy, that's $100 to $400+ per year in savings.

Florida-Specific Considerations for New Home Security

Florida's climate, weather, and building patterns create specific security needs that homeowners from other states may not anticipate.

Hurricane Preparedness

Your security system needs to function when a hurricane knocks out power, internet, and sometimes cellular towers. Here's what matters:

• Cellular monitoring is non-negotiable. Systems that rely on your home internet connection for monitoring go silent when the cable goes out. Cellular communicators (standard on professional systems) use the cell network to reach the monitoring center independently of your home internet.
• Battery backup: Your panel should have at least 24 hours of battery backup. Professional panels from Alarm.com-connected dealers have this built in.
• Hurricane-rated cameras: Outdoor cameras in Florida need to handle sustained winds, driving rain, and debris. Look for cameras rated IP66 or higher with reinforced mounting brackets.
• Surge protection: Florida has more lightning strikes than any other state. Install whole-home surge protection and use individual surge protectors on your security panel and NVR.

New Development Considerations

Florida's construction boom means many new homeowners are moving into developments where homes are still being built around them. This creates unique security dynamics:

• Construction traffic: Workers, subcontractors, and delivery vehicles moving through the neighborhood daily. Cameras and an active alarm help distinguish between legitimate visitors and potential threats.
• Unfinished lots: Empty lots and incomplete homes adjacent to yours create blind spots and access points. Position cameras to cover these areas until the neighborhood fills in.
• Temporary landscaping: New homes often have minimal landscaping, meaning fewer natural barriers. Your security system compensates for the lack of established hedges, fences, and trees.

Humidity and Heat

Florida's climate is tough on electronics. High humidity can cause condensation inside camera housings, and extreme heat shortens battery life. Choose outdoor equipment specifically rated for subtropical climates, and ensure cameras are mounted under eaves or in shaded locations whenever possible.

Smart Home Integration from Day One

One of the biggest advantages of setting up security in a new home is building your smart home automation around the security system from the start, rather than bolting it on later.

When your security panel runs on the Alarm.com platform, it becomes the central hub for your entire smart home. Everything connects through one app:

• Security + locks: "When I arm the system to Away mode, lock all doors."
• Security + thermostat: "When I disarm the system, set the thermostat to 74."
• Security + lighting: "Turn on the porch lights at sunset and off at sunrise."
• Security + cameras: "Record a 30-second clip and send a notification when motion is detected at the front door."
• Security + garage: "Close the garage door and arm the system when I leave the geofence around my home."

Setting all of this up during installation, rather than adding pieces over months or years, means your automations work from day one and you get the full value of every device immediately.

Common Mistakes New Homeowners Make with Security

After decades of installing systems in new homes across Florida, here are the mistakes we see most often.

1. Waiting Until After the Move

Once you're unpacking boxes and settling in, security drops down the priority list. Meanwhile, your home is at its most vulnerable: full of new possessions, unfamiliar routines, and no alarm system. Schedule installation before move-in day, not after.

2. Skipping the Back of the House

Homeowners often focus on the front door and forget that most break-ins happen through back doors, sliding glass doors, and side windows that face away from the street. Cover every entry point, especially those hidden from neighbor view.

3. Choosing DIY to Save Money

DIY security kits seem budget-friendly, but the savings often disappear when you factor in the time spent installing, troubleshooting, and the reality that self-monitored systems depend entirely on you seeing and responding to alerts. Professional installation with 24/7 monitoring costs $10 to $15/month more and provides dramatically better protection.

4. Not Pre-Wiring During Construction

If your home is still being built and you skip the pre-wire, you're leaving thousands of dollars on the table. Even if you're not ready to install cameras immediately, run the cable now while it's cheap. You'll thank yourself later.

5. Signing a Long-Term Builder Contract Without Comparing

The builder's "free" security system usually comes with a 3 to 5 year contract at above-market rates. Do the math before signing. A shorter contract with a local security company often saves you money over the life of the agreement.

6. Ignoring Environmental Sensors

A security system doesn't just protect against break-ins. Connected smoke detectors, water leak sensors, and CO detectors protect against the other threats that can damage your home while you're away. Water damage alone is the number one insurance claim in Florida.

Timeline: When to Start Planning Security for New Construction

If you're building a new home, here's when each security decision should happen relative to the construction timeline.

How to Choose the Right Security Company

The equipment matters, but the company behind it matters more. Here's what to look for when choosing a security provider for your new home.

• Local presence: Choose a company that operates in your area and can provide same-day or next-day service if something goes wrong. National chains often subcontract local service to third parties.
• Own monitoring center: Companies that own and operate their monitoring facility have more control over response quality. Ask whether monitoring is in-house or outsourced.
• UL-Listed monitoring: UL listing means the monitoring center meets strict safety and operational standards. This is the gold standard in the industry.
• No long-term contracts: Look for month-to-month or 12-month monitoring agreements. If a company requires a 3 to 5 year contract, ask why. Confident companies don't need to lock you in.
• Alarm.com integration: The Alarm.com platform is the industry standard for smart home security integration. Make sure your system runs on it.
• Transparent pricing: The upfront quote should include equipment, installation, and monthly monitoring with no hidden fees. If the pricing structure feels complicated, it probably is.
• Track record: Check Google reviews, BBB rating, and how long the company has been in business. In the security industry, longevity matters.

Frequently Asked Questions

The Bottom Line

A new home is a fresh start, and your security system should be part of it from day one. Whether you're building new construction or buying an existing home, the best time to plan security is right now, before you move in.

If you're building, get your security company involved during the design phase. Pre-wire for cameras and sensors while the walls are open. You'll save thousands compared to retrofitting later.

If you're buying an existing home, schedule your security installation 2 to 3 days before move-in day. A professional wireless system can be installed in a few hours and gives you full protection from the moment you start carrying boxes through the front door.

At Dehart Alarm Systems, we've been protecting Florida families and businesses since 1967. We're one of the top 100 security companies in the nation, and we run our own UL-Listed monitoring center right here in Florida. No long-term contracts required, no hidden fees, and no pressure. Just straightforward advice and professional installation from people who've been doing this for over 55 years.

Contact us for a free consultation and we'll review your floor plan, recommend the right system, and give you a transparent quote. Or call us at (941) 365-1991 to talk to someone today.