Top Managed IT Companies in Castle Rock

Cornerstone Computer Solutions

The healthcare and dental specialist for this market, with a published 2-hour critical response.

✓ Verified Provider ⭐ 4.8/5 Stars Est. 2004
Centennial, CO (16.3 road miles from Castle Rock Town Hall)
10–49 employees
Founded 2004
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Cornerstone Computer Solutions is a managed IT services provider based in Centennial, CO (16.3 road miles from Castle Rock Town Hall), operating since 2004. Across 70 verified Google reviews it averages 4.8 out of 5, a public track record you can weigh during diligence. It focuses on Managed IT Services, Cybersecurity & Threat Protection, Network Management, Backup & Business Continuity. Compare it against other Castle Rock managed IT providers, then request a quote.

Vetted by the Best IT MSP editorial team · Last updated October 2026

About Cornerstone Computer Solutions

Cornerstone Computer Solutions is a managed IT services provider based in Centennial, CO, delivering managed IT, cybersecurity and network management to small and mid-size businesses across Douglas County and the south Denver metro. The firm supports both fully managed IT and co-managed IT for companies that already have internal staff.

It holds a 4.8-star rating across 70 verified Google reviews. Castle Rock runs on professional services, healthcare and retail, with 5,617 residents in professional, scientific and technical services, 5,332 in health care and social assistance and 4,290 in retail trade, inside a Douglas County economy of 15,584 businesses with employees and the highest median household income of any Colorado county; Cornerstone Computer Solutions differentiates through a Centennial IT firm at 12649 E. Caley Avenue Suite 104, routed at 16.27 miles from Castle Rock Town Hall, in business over twenty years and built around healthcare practices, which publishes a 2-hour critical care response time and claims working knowledge of more than thirty dental, veterinary and medical software and hardware platforms alongside monthly service plans, network monitoring, HIPAA compliance solutions, antivirus and cyber security, data backup and recovery, cabling, phone systems, audio-visual work and alarm and surveillance systems.

Core services span managed IT, cybersecurity and threat protection, cloud services, network management, backup and disaster recovery, and IT strategy. Typical clients are Castle Rock-area organizations in healthcare & medical, professional services, retail & e-commerce and education that want 24/7 IT support and predictable monthly costs from a single accountable partner.

Services Offered

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Managed IT Services
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Cybersecurity & Threat Protection
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Network Management
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Backup & Business Continuity
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Compliance & Risk Management
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VoIP & Unified Communications
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IT Help Desk & End-User Support

Industries Served

💊 Healthcare & Medical
📋 Professional Services
🛍️ Retail & E-commerce
🎓 Education

Why Choose Cornerstone Computer Solutions

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4.8/5 Across 70 Google Reviews

A 4.8-star Google rating across 70 verified reviews is a strong, public signal of consistent delivery. For a Castle Rock business doing diligence, that track record matters more than marketing claims.

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Local Castle Rock Presence

Based in the Centennial, CO area, Cornerstone Computer Solutions can dispatch on-site across Castle Rock and the wider Douglas County and the south Denver metro market while resolving most issues remotely.

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Proactive, Security-First Managed IT

Cornerstone Computer Solutions differentiates through a Centennial IT firm at 12649 E. Caley Avenue Suite 104, routed at 16.27 miles from Castle Rock Town Hall, in business over twenty years and built around healthcare practices, which publishes a 2-hour critical care response time and claims working knowledge of more than thirty dental, veterinary and medical software and hardware platforms alongside monthly service plans, network monitoring, HIPAA compliance solutions, antivirus and cyber security, data backup and recovery, cabling, phone systems, audio-visual work and alarm and surveillance systems. Engagements cover 24/7 monitoring, help desk support, backup and disaster recovery, and IT strategy as a predictable monthly service.

Offices

Cornerstone Computer Solutions lists 3 offices. Choose one to see it on the map.

Certifications & Compliance

✓
Managed IT Services
✓
Cybersecurity
✓
Cloud & Microsoft 365
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Backup & Recovery

Frequently Asked Questions

What do Cornerstone Computer Solutions reviews say?

Across 70 verified Google reviews, Cornerstone Computer Solutions averages 4.8 out of 5. Weigh that public track record alongside a direct quote.

Which IT services does Cornerstone Computer Solutions provide?

Cornerstone Computer Solutions delivers Managed IT Services, Cybersecurity & Threat Protection, Network Management, Backup & Business Continuity, Compliance & Risk Management, VoIP & Unified Communications to organizations across Castle Rock, CO.

What area does Cornerstone Computer Solutions serve?

Cornerstone Computer Solutions is based in Centennial, CO (16.3 road miles from Castle Rock Town Hall) and supports businesses across Castle Rock and the greater metro area.

When did Cornerstone Computer Solutions start?

Cornerstone Computer Solutions has been operating since 2004.

Is Cornerstone Computer Solutions certified?

Cornerstone Computer Solutions carries Managed IT Services, Cybersecurity, Cloud & Microsoft 365, Backup & Recovery.