Kastle is a full service electronic security and access control system provider, with over a quarter century of proven experience providing state-of-the-art outsourced security service to office buildings and their unique tenants, nationwide.

Our team is driven to provide extraordinary security service to office buildings and tenants. It's our core business to deliver security products and services that guarantee solutions.

We realize that building owners and their tenants have a lot of choices. We want to empower others to make the right choice when evaluating electronic security systems for office buildings and tenant suites. Savvy building owners and tenants around the world outsource their office building security to Kastle because they understand the value of providing tenants better service and more convenient security.