Guides for property managers, boards and businesses
Practical, plain-language guides on intercoms, keys, doors and electrified locks, written from the work our door division, locksmiths and low voltage technicians do every day in New York City and the tri-state area.
ButterflyMX vs Akuvox vs Comelit for NYC co-ops and condos
How the three intercom platforms differ, and which buildings each suits.
Learn moreHow to replace an old analog intercom in a pre-war building
Repair, like-for-like or IP upgrade: how to decide and how the job runs.
Learn moreMaster key systems for property management companies
Key hierarchy, restricted keyways and keeping control as staff change.
Learn moreWhat a building survey includes
What we look at, what you get in writing, and how to prepare.
Learn moreMaglock vs electric strike for lobby doors
How each works, egress, power failure, and which doors suit which.
Learn moreNYC door closers and self-closing doors: the basics
Why apartment and stairwell doors must self-close, and how closers are set.
Learn moreChoosing high-security cylinders (Mul-T-Lock)
Pick, bump and drill resistance, key control and which formats fit your doors.
Learn moreStorefront door repair checklist for retail chains
What store managers should check, and what to standardize across locations.
Learn moreRequest a building survey
Call 212-837-4444, 24/7, or send the job details. Written estimate, invoice terms, no card to start.