Security System Upgrades and Intercom Replacement in NYC
Legacy System Upgrades in NYC
Connextivity handles security system upgrades and intercom replacement across New York City, including installations other companies walked away from. Analog cameras to IP, proximity cards to encrypted credentials, audio-only panels to video intercoms. Diagnostics run $225 an hour and upgrade projects start at $2,000.
Most of what we find is reusable. The conduit, the cabling runs, the door hardware, the camera mounts, none of that is usually the problem. The electronics on either end are.
OUR CLIENTS
Can an old security system be upgraded instead of replaced?
Often yes. Camera mounts, conduit, cabling, and door hardware frequently carry forward, so an upgrade replaces the electronics rather than the whole installation. A diagnostic assessment at $225 an hour establishes what is reusable before anything gets quoted. Basic upgrades start at $2,000.
Taking Over Failed Installations & Upgrading Legacy Systems
Your security system isn't working. The original installer went out of business, stopped returning calls, or can't fix ongoing issues. Your analog cameras provide footage too grainy for identification. Your proximity card access control can be cloned with a $30 device.
We specialize in taking over failed installations and upgrading legacy systems, diagnosing problems other installers missed, preserving existing infrastructure where appropriate, and delivering systems that actually work.
Why Connextivity
Diagnostic Expertise
We specialize in diagnosing complex problems other installers can't fix. Our combination of security expertise, IT networking knowledge, and manufacturer certifications identifies root causes, not just symptoms.
Cost-Effective Upgrades
We preserve existing infrastructure where appropriate—camera mounts, conduit, cabling, and door hardware—reducing upgrade costs significantly while delivering modern capabilities.
We Fix What Others Couldn’t
Many clients come to us after other installers failed to resolve ongoing issues. We've rescued installations from national companies, local installers who disappeared, and systems that never worked correctly.
Phased Upgrade Options
We understand budget constraints. Phased approaches allow critical components to be replaced first with additional upgrades implemented as budgets allow, spreading costs over 3-12 months.
Multi-System Integration
Legacy systems often operate cameras, access control, and intercoms independently. We integrate these systems even when upgrading components from different manufacturers and eras.
LEGACY SYSTEMS WE UPGRADE
Analog to IP Cameras
Grainy footage replaced with HD or 4K IP cameras providing clear identification footage. Modern video management software with remote viewing, extended retention, and camera integration. Existing cabling often reused with adapters to reduce costs.
Outdated Access Control
Vulnerable proximity card systems replaced with encrypted MIFARE DESFire EV3 credentials. Modern platforms with cloud management, mobile credentials, and camera integration. Existing door hardware and wiring often preserved.
Legacy Intercom Systems
Audio-only intercoms replaced with HD video IP intercoms from 2N and Axis. Mobile app unlock, resident directories, visitor management, and access control integration. Existing wiring reused where possible.
Failed Alarm Systems
Wireless-only systems that a jammer defeats, replaced with hardwired sensors and commercial-grade encrypted wireless.
Pricing
Professional Legacy System Upgrades
Pricing depends on scope, coverage requirements, and infrastructure complexity.
Diagnostic Assessment
$225/hour
• 1-2 hours typical
• Complete system inventory
• Root cause identification
• Written findings report
• Fixed-price remediation proposal
Target Upgrades
$10,000–$50,000+
• Replace critical components
• Preserve existing infrastructure
• Phased approach available
• Multi-system integration
Basic Upgrades
Starting at $2,000+
• Single system repairs
• Component replacement
• Configuration corrections
• Immediate issue resolution
Complete Replacement
$50,000–$200,000+
• Full system replacement
• Modern equipment throughout
• Maximum future-proofing
• Campus-wide deployment
Phased approach available:
Phase 1: Critical failures affecting security (immediate)
Phase 2: Functional but outdated components (3-6 months)
Phase 3: Enhancements and expansions (6-12 months)
Cost savings through infrastructure reuse:
Camera mounts and conduit often reusable
Existing cabling frequently preserved with adapters
Door hardware often retained during access control upgrades
Wiring reused during intercom replacements
Upgrade Process
Structured, Engineered & Professional.
Step 1 – Diagnostic Assessment
Assess existing system, identify problems, document current state.
Step 2 – Diagnostic Report & Proposal
Written findings with remediation options and fixed-price proposals.
Step 3 – Scope Selection
Choose repair, targeted upgrade, or complete replacement based on budget.
Step 4 – Installation Scheduling
Most projects complete within 2-4 weeks, phased approaches scheduled by priority
Step 5 – Professional Installation
NYS licensed installers perform all work, preserving appropriate infrastructure
Step 6 – Testing & Training
Verify system operation, integrate all components, train your team.
Step 7 – Ongoing Support
24/7 emergency service and preventive maintenance available.
Common Scenarios We Handle
Scenario 1
National company overpromised
Salesperson promised everything, subcontracted to lowest bidder
Assess installation, identify deficiencies, complete properly
Scenario 2
Original installer disappeared
Company closed mid-project, no documentation, no support
Reverse-engineer installation, complete work, provide ongoing support
Scenario 3
System never worked correctly
Persistent problems, installer keeps "adjusting" without results
Comprehensive diagnostics identifying root causes, fix underlying problems
Scenario 4
Previous installer can't fix it
Ongoing issues, lack of expertise to diagnose complex problems
Security + IT expertise diagnoses problems others missed
Intercom Replacement in Older NYC Buildings
A lot of NYC residential stock still runs the intercom it was built with. NuTone panels, audio-only handsets wired to a lobby station, and a directory strip somebody last updated with a label maker.
NuTone intercom replacement usually goes better than owners expect, because the wiring between apartments and the lobby is often reusable. What changes is the lobby station and the in-unit device, and in many buildings the in-unit device disappears entirely once residents answer the door from a phone.
The parts problem is what forces the decision. Once a manufacturer stops supporting a panel, a single failed board can strand the whole building, and that tends to happen at the least convenient moment.
Serving All of New York
We upgrade and replace security systems across all five boroughs:
We're licensed by the New York State Department of State, and taking over an existing installation in NYC usually means working out what a previous contractor did without documentation.
Frequently Asked Questions
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Diagnostic assessments are $225/hour with most systems requiring 1-2 hours. You receive a written report identifying problems, root causes, and fixed-price remediation proposals.
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Yes. We specialize in taking over installations from companies that went out of business, stopped providing support, or couldn't fix ongoing issues.
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No. We preserve existing infrastructure where appropriate—camera mounts, cabling, conduit, and door hardware—to reduce upgrade costs significantly.
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We offer phased approaches allowing critical components to be replaced first, with additional upgrades implemented as budgets allow over 3-12 months.
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Yes. We frequently upgrade analog CCTV systems to modern IP cameras, often reusing existing coax cabling with adapters to reduce costs.
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Yes. We upgrade vulnerable proximity card systems to encrypted MIFARE DESFire EV3 credentials, often preserving existing door hardware and wiring to reduce costs.
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Most upgrades complete within 2-4 weeks from approval. Phased approaches are scheduled based on priorities and budget availability.
Schedule Your Diagnostic Assessment
Get expert diagnosis of your legacy security system and a fixed-price remediation proposal.