Cornerstone Security Group LLC

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Cornerstone Security Group LLC For 20+ years Cornerstone Security Group, LLC has been a locally owned, family operated company that

Security That's Easy to Live With

With your busy lifestyle, the last thing you need is a security system that causes you stress. In addition to protecting your home, business and other assets, a good security system should be easy to use, reliable and versatile. Cornerstone Security Group, LLC provides affordable systems customized to your needs and able to detect intruders outside BEFORE they even attempt to gain entry. You can also have the peace of mind knowing our security systems connected to proper authorities to alert them 24 hours a day, ensuring a prompt response to any and all emergencies.

Fire Prevention Day: test your smoke alarms, check your extinguisher, and make a family escape plan. Stay safe, Milwauke...
10/09/2026

Fire Prevention Day:
test your smoke alarms, check your extinguisher, and make a family escape plan. Stay safe, Milwaukee! 🔥

We are Community strong!

Next generation of Future Leaders!

11

Today Cornerstone security had the privilege of stopping out at River Club of Mequon Golf Course in supporting Rooted an...
09/14/2026

Today Cornerstone security had the privilege of stopping out at River Club of Mequon Golf Course in supporting Rooted and Rising.
So Please if you were not one of 96 golfers that enjoyed a beautiful day of golf, send a donation to them to help keep their program going.
Rooted & Rising of Washington Park
https://www.rootedandrisingwp.org

We are Community strong!

Next generation of Future Leaders!

We at Cornerstone security would like to thank the king family and the residents of 59th and Chambers for inviting us to...
09/12/2026

We at Cornerstone security would like to thank the king family and the residents of 59th and Chambers for inviting us to their block party

We are community strong!

Next generation of future leaders!

07/04/2026

🎆🇺🇸 HAPPY 250TH, AMERICA! 🇺🇸🎆
Cornerstone would like to wish everyone the happiest 4th of July as we celebrate America's 250 YEARS! What a moment. What a milestone. What a country!
For two and a half centuries, this nation has been built one neighbor at a time showing up for each other, standing together, never backing down. That spirit built America, and that same spirit is alive right here in our community RIGHT NOW.
So today, let's celebrate big! Fire up the grill, gather the family, watch the sky light up and let's remember why we do this. Because stronger neighbors make stronger neighborhoods. Stronger neighborhoods make a stronger community. And a stronger community is how America will endure for another 250 years.
🔥 SHARE this post if you're proud to be part of a community that shows up for each other! Let's spread the spirit and build something stronger — together. 🔥
HAPPY 4TH OF JULY! 🎆🇺🇸

We are Community strong!

Next generation of Future Leaders!

07/01/2026
Remember, Today isn't just a day off. It's a day to honor those who gave everything. So we could gather together.
05/25/2026

Remember, Today isn't just a day off. It's a day to honor those who gave everything. So we could gather together.

Address

7251 W North Avenue
Wauwatosa, WI
53213

Telephone

+14145889104

Website

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