Alarm System Installation in Seattle, WA

Compare 25 alarm system installation contractors near you in Seattle and surrounding area with an average rating of 4.5/5. Get free quotes, read reviews, and find the right pro for your project.

Last updated May 22, 2026

Verified Pro Installers

Other Businesses in This Area

Seattle DVR Inc.

5.022½+ years online
seattledvr.com

Security One: Seattle WA Home Security Systems

5.020+ years online
securityoneonline.comGet a Free Quote

Tech Security USA, LLC

5.0~12 years online
techsecurityusa.com

Watson Security

4.924 years online
watsonsecurity.com

AAA Fire Protection

4.828+ years online
aaafire.com/request-a-quote

Great Western Security, Inc.

4.8~21 years online
greatwesternsecurity.com

Omni Security Technologies LLC

4.89+ years online
omnisecuritytech.comGet a Free Quote

Pi Security Solutions

4.813½+ years online
pisecuritysolutions.com

HPD Security, LLC - Seattle Security Guard Services

4.77+ years online
hpdsecurity.comGet a Free Quote

Sonitrol Pacific Security Systems Seattle, A Pye-Barker Fire & Safety Company

4.7~27 years online
sonitrolpacific.com

Stonewall Security

4.77½+ years online
stonewallsecuritywa.com

Island Security Systems Inc

4.528 years online
islandsecurity.com

Washington Alarm

4.4~27 years online
washingtonalarm.com

Burdick's Security

4.327+ years online
burdicksecurity.com

Guardian Security

4.330+ years online
guardiansecurity.com

Absolute Security Alarms LLC

4.015½+ years online
absolutesecurityalarms.com

Seattle Emergency Firewatch

3.02½+ years online
seattleemergencyfirewatch.comGet a Free Quote

ADT Security Services

2.029+ years online
adt.com/local/wa/shoreline

Alarm System Installation in Nearby WA Cities

Alarm System Installation in Seattle, WA

Seattle alarm system installers in this directory cover Capitol Hill, Ballard, Queen Anne, Wallingford, West Seattle, and surrounding King County. A typical 3-bedroom Seattle home with door/window contacts, motions, glass-break, and 24/7 monitoring runs $1,800-$3,500 installed plus $35-$60/month for monitoring.

Seattle Police charges for false-alarm response after the second event. Most monitored systems use cellular over LTE. Many Seattle Craftsman and Tudor homes have plaster walls that complicate sensor wiring — wireless sensors are often the practical default.

Frequently Asked Questions

Do I need a permit for a Seattle alarm?
Seattle Police requires alarm registration ($25-$50/year). Failing to register results in higher false-alarm fines.
What about plaster walls?
Wireless sensors avoid plaster damage. Modern wireless panels handle 100+ sensors without wall penetrations.
Should my alarm integrate with cameras?
Most modern systems do — Alarm.com, Honeywell, and Qolsys all integrate.

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