Introduction
Installing an alarm system is one decision. Choosing whether to add 24/7 professional monitoring is another. Monitoring adds $20–$50 monthly to your security investment, but is it worth it?
At Garrison Alarms, we help homeowners understand whether monitoring makes sense for their situation. This guide breaks down monitoring costs, calculates ROI through insurance discounts, and helps you decide if professional monitoring is right for you.
What Is Professional Alarm Monitoring?
How It Works
- Alarm triggered: Door/window broken, motion detected, or manual panic button pressed
- Signal sent: Alarm system sends signal to monitoring centre (seconds)
- Centre receives alert: Monitoring operator receives alarm event with customer details
- Centre contacts you: Calls phone number(s) on file
- Verification: Asks security questions to verify breach vs. false alarm
- Police dispatch: If emergency confirmed, centre contacts police
- Response: Police respond to address (police contact optional with monitoring)
- Resolution: Centre updates your account; police file incident report
Timeline: Entire process typically 2–5 minutes from alarm trigger to police dispatch
Unmonitored Alarms (DIY Monitoring)
With unmonitored systems, you rely on:
- Mobile phone alerts (lag time 10–60 seconds)
- Manual phone call to police (~3 minute process)
- Neighbor notification/awareness
- No central authority verifying urgency
Response time gap: Unmonitored systems have 5–10 minute delay vs. monitored systems (30 seconds–2 minutes)
Alarm Monitoring Costs in NZ
Monthly Monitoring Charges
NZ monitoring costs vary by provider:
Budget providers:
- $15–$25/month
- Basic response (phone contact only)
- May require you to contact police
- Limited customer service hours
Mid-range providers:
- $25–$35/month
- Phone contact + police dispatch
- 24/7 monitoring centre
- Standard customer support
Premium providers:
- $35–$50+/month
- Professional response protocols
- Priority police dispatch
- Extended support services
- Optional SMS/email alerts
Annual Monitoring Cost
How it works:
- Budget: $180–$300/year
- Mid-range: $300–$420/year
- Premium: $420–$600+/year
- Can track access times and dates
Long-term Commitment
10-year cost:
How it works:
- Budget: $1,800–$3,000
- Mid-range: $3,000–$4,200
- Premium: $4,200–$6,000+
Installation and Setup Costs
Professional Installation
Most monitoring requires professional system installation:
- Base system: $1,500–$3,500 (one-time)
- Monitoring activation: Usually included in contract
Connection Fees
- Standard: Usually included
- Landline monitoring: Sometimes $50–$100 setup
- Mobile/cellular backup: Add $50–$150
Equipment
Basic monitoring system includes:
- Control panel: $300–$800
- Entry sensors: $30–$50 each (typically 4–8 needed)
- Motion detectors: $50–$150 each
- Siren/backup power: $100–$200
- Installation: $500–$1,500 labour
Does Monitoring Reduce Insurance Premiums?
Long-term ROI Calculation
Most NZ home insurers offer monitoring discounts:
Typical discounts for monitored alarm system:
- 5–15% discount on annual premium
- Average: ~8% discount
How to calculate benefit:
- Home insurance cost: $1,200/year (example)
- 8% discount: $96/year saved
- Annual monitoring cost: $25–$35/month ($300–$420/year)
- Net cost: $204–$324/year ADDITIONAL
Wait—that’s a net cost increase? Here’s where it gets interesting…
Employment Law Considerations
10-year monitoring scenario (Premium provider, $50/month):
Factor | Amount |
|---|---|
Monitoring cost (10 years) | $6,000 |
Insurance discount (10 years @ 8%) | $960 |
Net additional cost | $5,040 |
BUT: | |
Avoided break-in loss (1 prevented incident @ $5,000) | $5,000 |
Avoided police response fee (if applicable) | $200 |
Avoided higher insurance claims (2+ incidents prevented) | $10,000+ |
Total avoided costs | $15,200+ |
Net benefit over 10 years: $10,000+ in avoided losses, despite $5,000 monitoring cost
Reality Check on Insurance
Important notes:
- Not all insurers offer discounts; ask your provider
- Discounts typically 5–10%, rarely exceed 15%
- Some insurers require specific brands (Paradox, DSC, etc.)
- Discounts often require professional installation (DIY doesn't qualify)
- Claim deductible sometimes waived for monitored break-ins
Action: Contact your insurer BEFORE installing monitoring—ask about specific discount requirements
Comparing Monitoring vs. Non-Monitored Alarms
Factor | Monitored | Unmonitored |
|---|---|---|
Monthly cost | $25–$50 | $0 |
Police response | Automatic (seconds) | Manual (minutes) |
Active deterrent | Monitored response | Siren only |
24/7 response | Yes | No (requires you to respond) |
Insurance discount | 5–15% typical | 0–2% typical |
Emergency capability | Can reach authorities while away | Depends on neighbors |
False alarm fees | Monitoring centre handles | You pay (~$50–$200 if police respond) |
Notification | Centre contacts you | Siren only (you hear it) |
When Monitoring IS Worth It
High-Risk Situations (Monitoring Strongly Recommended)
1. High-crime suburb
- Burglary rate 4.0+ per 1,000 residents
- Local crime history
- Monitoring can prevent 60–80% of incidents
- Insurance often requires monitoring for discount qualification
2. High-value property
- Home worth $800,000+
- Valuable contents (art, collectibles, jewelry)
- Investment property
- Monitoring provides rapid response protection
3. Frequent absences
- Travel regularly for work
- Extended holidays common
- Vacation properties
- Monitoring enables 24/7 protection while away
4. Live alone or elderly
- Single occupancy—can't rely on hearing alarm
- Elderly residents—may not respond quickly
- Mobility issues
- Monitoring ensures help arrives regardless of personal response
5. Business/Commercial property
- Retail shops, offices
- High value merchandise/equipment
- 24/7 monitoring expected industry standard
- Insurance often requires it
Medium-Risk Situations (Monitoring Recommended)
- Average Auckland home in moderate-risk suburb
- Family home with regular occupants
- Moderate-value property ($400,000–$800,000)
- Regular local presence—around home most days
Recommendation: Monitoring adds $300–$420/year cost but provides meaningful protection improvement
When Monitoring May NOT Be Worth It
Low-Risk Situations (Monitoring Optional)
1. Secure location
- Low-crime area (burglary rate <2.5 per 1,000)
- Gated community or estate
- Active neighborhood watch
- Strong community presence
2. Budget constraints
- Tight financial situation
- Alarm system adequate but monitoring feels expensive
- Trade-off: unmonitored alarm still deters and sounds audible alert
3. Low-value property
- Rental apartment
- Small flat or studio
- Limited valuable contents
- Risk/benefit ratio less favorable
4. Always home
- Work from home or retired
- Don't travel frequently
- Present to respond to alerts
- Can manually call police if needed
Risk Mitigation Without Monitoring
If monitoring doesn’t suit your situation, use these alternatives:
1. Mobile alerts (free through most modern systems)
- Push notification on phone when alarm triggers
- Can respond remotely or call police
2. Loud siren ($200–$500 additional)
- Audible alert within 100m radius
- Neighbors likely to call police
- Often effective deterrent
3. Professional installation (critical, not optional)
- Ensures system functions optimally
- Proper angle and sensitivity setting
- Support for troubleshooting
- Often better than monitoring for system reliability
Monitoring Provider Comparison
Major NZ Providers
Provider | Monthly Cost | Dispatch Response | Key Feature |
|---|---|---|---|
ADT Security | $35–$50 | Professional dispatch | Nationwide coverage |
Security Direct | $20–$35 | Police dispatch | Budget-friendly |
Burgess Perry | $30–$45 | Professional response | NZ-based |
Catalyst (ASM) | $25–$40 | Rapid dispatch | 24/7 centre |
Note: Costs and services change; get current quotes from providers
False Alarms and Monitoring
False Alarm Costs
Unmonitored systems:
- Police response to false alarm: $50–$200 charge (depending on council)
- You must call police manually
- Repeated false alarms can result in call screening
Monitored systems:
- Monitoring centre verifies before police dispatch
- Reduces false police response significantly
- 2–3 false alarms typical annually (vs. 5–10 with unmonitored)
False alarm reduction alone can save $200–$600/year
Frequently Asked Questions
Can I add monitoring to an existing alarm system?
Usually yes. Most systems support monitoring retrofit. You may need:
- Activation fee: $0–$100
- Equipment upgrade: Sometimes $200–$400
- Professional installation: $200–$400
- Monthly cost then begins
Cost to add monitoring: Typically $500–$800 one-time + monthly fees
What if monitoring centre can't reach me?
Standard protocol:
- Centre attempts primary number
- Attempts secondary number (if provided)
- If no answer after 2–3 attempts, dispatches police anyway
- Police treat as potentially active break-in
- Centre resumes contact attempts with you
You don’t have to answer—police still respond if monitoring can’t verify
Do I need phone line for monitoring?
No—outdated requirement. Modern systems use:
- Cellular/mobile backup (most common now)
- Internet connection (if primary at home)
- Hybrid (internet + cellular backup)
Cellular backup typical cost: $0–$100 one-time setup
What if my internet goes out?
Most modern systems have cellular backup specifically for this scenario:
- System detects internet outage
- Automatically switches to cellular connection
- Monitoring continues uninterrupted
- You're notified of connection change
Can burglars jam monitoring signal?
Difficult with modern systems, but possible:
- Radio jamming technically possible but illegal
- Professional monitoring systems detect jamming attempts
- Alert you to interruption
- Most criminals don't have jamming equipment
- Cellular + internet redundancy prevents jamming
Is 24/7 monitoring necessary, or is daytime-only adequate?
24/7 recommended because:
- 60–70% of break-ins occur during night/darkness
- You're most vulnerable when asleep
- Holiday/vacation monitoring especially critical
- Cost difference between 24/7 and limited-hours is small
What if I have false alarm charges from previous system?
Monitoring helps reduce future false alarms:
- Centre verification reduces police response false alarms
- Proper system setup (professional installation) reduces sensitivity issues
- Historical false alarm pattern doesn't typically prevent new monitoring
Can I cancel monitoring anytime?
Typically yes, but check contract:
- Most providers allow 30-day cancellation
- Some have annual contracts ($300–$420 commitment)
- Early termination fee possible: $100–$300
- Read terms carefully before signing
Decision Framework: Should You Get Monitoring?
Get 24/7 professional monitoring if:
- Home value >$500,000, OR
- Live in high-crime suburb, OR
- Travel frequently/extended absences, OR
- Elderly, disabled, or live alone, OR
- Own valuable contents, OR
- Insurance offers substantial discount (>8%), OR
- Own rental/investment property
Score: 3+ factors = monitoring recommended
Don’t prioritize monitoring if:
- Low-risk suburban area
- Always home/present
- Budget constraints
- Property value <$350,000
- No valuable contents
- Renters (temporary occupancy)
However: Even in this group, monitoring can be worthwhile for peace of mind (~$1/day cost)
ROI Summary
Typical homeowner monitoring cost/benefit:
Metric | Amount |
|---|---|
Annual monitoring cost | $300–$420 |
Insurance discount (typical) | $96 |
Net annual cost | $204–$324 |
True cost per day | $0.56–$0.89 |
If break-in prevented | |
Avoided burglary loss (avg) | $5,000 |
ROI on monitoring (if 1 incident prevented) | 1,500% |
Probability (avg suburbs) | ~1 in 300 homes annually |
Internal Linking Notes
Link to these related Garrison Alarms resources:
- "CCTV vs Alarm System: Which Is Better for Home Security?" (system selection)
- "CCTV Installation Cost Auckland: Complete 2026 Pricing Guide" (compare to CCTV costs)
- "Home Security Checklist NZ: 25 Ways to Protect Your Auckland Home" (complete strategy)
- "Auckland Burglary Statistics 2025-2026: Which Suburbs Are Most at Risk?" (risk assessment)
- "Do Security Cameras Deter Burglars?" (monitoring effectiveness)
Summary
Professional 24/7 alarm monitoring costs $20–$50 monthly ($240–$600 annually) in New Zealand. Whether it’s “worth it” depends on your specific situation:
Strongly recommended: High-crime areas, frequent absences, high-value homes, vulnerable occupants
Worthwhile for most: Added cost is minimal ($0.50–$1 daily) considering protection value
Optional: Low-crime areas, constant home presence, budget constraints
Insurance discounts (5–15%) partially offset monitoring cost. False alarm reduction also saves money. True ROI becomes apparent if a break-in is prevented—monitoring can recover its entire cost through a single avoided incident.
Get expert guidance on whether monitoring makes sense for YOUR property—contact Garrison Alarms at 0800-427747.
About Garrison Alarms
Since 1989, Garrison Alarms has helped Auckland property owners choose appropriate security solutions. We represent leading monitoring providers and help you understand true costs and benefits. Our recommendations match your specific risk profile and budget.
Last updated: February 2026