Brentwood Security, Surveillance & Home Automation Services


Greensite Brentwood security and home services proudly provide New York City, Long Island, and New Jersey residential and commercial customers with professionally installed low-voltage security, high-resolution surveillance, home automation, and home safety maintenance services. For both Brentwood residential and commercial Greensite installed security systems, the Greensite Central Home Monitoring center is UL Listed, CSAA Five Diamond Certified and FDNY Approved. Greensite is well reviewed, visit the Greensite Yelp page, and we are proud to have over 15 years experience.

Honeywell Certified Installer Long Island home services

Greensite is a Honeywell Certified Installer. Choose from a variety of product lines including the Honeywell Lynx Touch, Honeywell Tuxedo Touch, Lyric Touch, Keypad Alarms, Fire & CO Alarms and Central Monitoring.

Z-Wave Home Automation

Z-Wave is the new standard among home automation systems. Z-wave devices create a mesh network and thereby eliminate the need for a large antenna and power draw. Lights, locks, thermostats and more can be controlled by the touch of your phone or tablet. Learn more.

Best Home Automation Brands

Brentwood Home Security

The professionals at Greensite provide Brentwood residential and commercial security system installation and maintenance. Honeywell Certified Installer.

Brentwood Home Surveillance

For both Brentwood homeowners and business owners, Greensite Surveillance Installations provide reliable and quality, reliability and economy.

Brentwood Home Automation

Z-Wave home automation installation is here, and Greensite offers our Brentwood customers both turnkey and custom solutions. Lights, locks, thermostats and more.

Brentwood Home Maintenance

Get dryer duct cleaning and roof gutter cleaning and maintenance for your Brentwood property. Proper cleaning and maintenance are essential to preventing damage.