🐜AssistAnt · Pro directory
There are 42 home security companies within 25 miles of Castle Rock, CO in the AssistAnt directory as of November 1, 2026, 2 of them based in Castle Rock itself. None are verified by AssistAnt yet, so check a business’s license and insurance before you hire it. Ranked by activity, never paid: members who pressed Boost this week come first, then verified and claimed businesses, then businesses whose website we checked, then everyone else nearest first. No one can pay for a higher spot.
Home security systems near Castle Rock
Ranked by activity, never paid. Boosted this week first, then verified and claimed, then website checked, then everyone else nearest first. Not on this list? Add yourself free →
- Security Central Inc. | Denver Home Security Systems | Business Alarm Systems Denver | Home Alarm System Monitoring
Englewood, CO · 13.3 mi
Not verified yet
(303) 721-0111 Website ↗
- Centennial Solutions
Denver, CO · 16.7 mi
Not verified yet
(303) 335-0987 Website ↗
- Apollo Security USA
Englewood, CO · 18.8 mi
Not verified yet
(303) 881-9914 Website ↗
- Retail Tech Solutions Llc
Aurora, CO · 19.2 mi
Not verified yet
(303) 669-4866 Website ↗
- 1stkey Technology Group Inc
Aurora, CO · 19.7 mi
Not verified yet
(720) 340-1539 Website ↗
- Hs3 Technologies Inc.
Castle Rock, CO · 1.5 mi
Not verified yet
(303) 325-3233
- Zions Security Alarms
Castle Rock, CO · 3.1 mi
Not verified yet
(720) 828-7667
- Adt Security Services
Englewood, CO · 12.4 mi
Not verified yet
(800) 743-2309
- Merlin International, Inc
Englewood, CO · 12.4 mi
Not verified yet
(303) 221-0797
- Saitell Usa
Englewood, CO · 13.2 mi
Not verified yet
(303) 680-6660
- Unisight Digital Technologies, Inc.
Englewood, CO · 13.2 mi
Not verified yet
(303) 680-6629
- Valuetec Financial Equipment
Englewood, CO · 13.5 mi
Not verified yet
(720) 235-5405
- Convergint
Centennial, CO · 13.6 mi
Not verified yet
(303) 932-0757
- Colorado Security Protection
Highlands Ranch, CO · 13.7 mi
Not verified yet
(720) 255-1073 No website on file
- Liteye Systems
Centennial, CO · 13.7 mi
Not verified yet
(720) 974-1766
- Home Security Centers
Centennial, CO · 14.0 mi
Not verified yet
(303) 799-9620
- Peak Protection, LLC
Centennial, CO · 14.0 mi
Not verified yet
(855) 879-7325
- ECAMSECURE
Denver, CO · 15.2 mi
Not verified yet
(303) 214-0969
- Security One: Denver, Colorado Home Security Systems
Denver, CO · 16.7 mi
Not verified yet
(888) 584-5152
- Pogo Security LLC
Denver, CO · 18.5 mi
Not verified yet
(720) 492-1694 No website on file
- Adt Security Services
Aurora, CO · 18.5 mi
Not verified yet
(303) 857-5463
- Seca Secure
Littleton, CO · 18.6 mi
Not verified yet
(303) 997-8451 No website on file
- Security Surveillance System
Aurora, CO · 18.8 mi
Not verified yet
(720) 535-5803
- Max Security Inc.
Denver, CO · 20.1 mi
Not verified yet
(303) 745-8888
- A-1 Security Systems
Denver, CO · 20.2 mi
Not verified yet
(303) 462-2443
- Protection 1 Security Solutions
Denver, CO · 20.3 mi
Not verified yet
(720) 636-7602
- M-tech Security Solutions
Denver, CO · 20.3 mi
Not verified yet
(720) 507-1454
- Etg Systems Inc
Denver, CO · 20.3 mi
Not verified yet
(720) 644-9300
- Integrated Systems
Centennial, CO · 20.4 mi
Not verified yet
(303) 698-2698
- Residential Systems Inc
Littleton, CO · 20.4 mi
Not verified yet
(303) 277-9983
Showing the 30 listed first. Search by ZIP code to see more.
More near Castle Rock
Same order as above, continued.
Questions
- How many home security companies are near Castle Rock, CO?
- 42 within 25 miles, 2 in Castle Rock, as of November 1, 2026.
- Which home security companies near Castle Rock, CO are verified?
- None yet. Verified means AssistAnt checked the business registration and insurance; unverified listings come from public business records.
- Can a business pay to rank higher on AssistAnt?
- No. Ranked by activity, never paid: members who pressed Boost this week come first, then verified and claimed businesses, then businesses whose website we checked, then everyone else nearest first. No one can pay for a higher spot. AssistAnt never sells your contact information.
More in Castle Rock
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Nearby towns
- Highlands Ranch, CO 13 mi
- Centennial, CO 13 mi
- Littleton, CO 17 mi
- Englewood, CO 18 mi
- Aurora, CO 20 mi
- Denver, CO 24 mi
- Lakewood, CO 26 mi
- Wheat Ridge, CO 30 mi
- Golden, CO 30 mi
- Commerce City, CO 30 mi