Walk into any hardware store in NYC and the lock aisle alone can stop you cold. Deadbolts, smart locks, keypads, padlocks, mortise sets, cam locks — each one promises to keep your home or business safe, but most of them solve very different problems. The right choice depends on the door, the threat you are actually worried about, and how often you need to hand out access. This guide walks through the lock types we install and service every day across Manhattan so you can pick what fits instead of what is flashiest.
Key Takeaways
- The door dictates the lock: Apartment entries, storefront glass, back-of-house gates, and filing cabinets each call for a different mechanism, so start with the door before you shop.
- Security grade matters more than brand: A Grade 1 or Grade 2 deadbolt from a reputable maker will outperform a flashy smart lock bolted to a weak strike plate every time.
- Convenience has a trade-off: Keypads and high-security locks each shine in the right spot, but they need real installation and occasional service to stay reliable.
Traditional Keyed Locks
Keyed cylinder locks are still the backbone of almost every door in New York. A physical key rotates a set of pins inside a cylinder, the bolt throws, and the door is secure. The design has been refined for well over a century, which is exactly why it still works. Parts are easy to source, a good locksmith can rekey or service them in minutes, and there are no batteries to die at the worst possible moment.
Where They Fit Best
Interior office doors, back entries, apartment doors with a strong deadbolt above them, and anywhere you simply want a proven mechanical lock without a screen or an app. For a primary entry, pair a keyed knob or lever with a real deadbolt rather than relying on the knob alone.
What to Watch For
Cheap builder-grade cylinders are easy to pick or bump. If your locks came stock with a new-construction apartment or a landlord swap, it is worth upgrading the cylinder to something with pick and bump resistance, especially on a street-level door.
Combination and Keypad Locks
Combination locks skip the key entirely. You enter a sequence on a dial or a keypad and the lock opens. Mechanical combination locks show up on safes, gym lockers, and storage units. Electronic keypad locks are the version most New Yorkers see on apartment doors, short-term rentals, and small offices.
The upside is obvious — no key to lose, no copies floating around with ex-roommates or former staff, and you can change the code whenever you need to. The catch is that a code is only as secure as the people who know it. If everyone uses the same four digits for two years, it is not really a secret anymore. Rotate codes on a schedule, and give visitors their own temporary code rather than sharing the master.
Electronic and Smart Locks
Electronic locks cover a wide range — keypad-only models, key fob readers, biometric scanners, and fully connected smart locks that talk to your phone. They all share the same core idea: replace the physical key with a credential the lock can verify electronically.
Smart Locks for Apartments and Homes
A good smart lock lets you unlock the door from your phone, hand out digital keys to family or a cleaner, and see a log of who came and went. Many models still accept a physical key as a backup, which is the configuration we recommend for most NYC apartments. Before you install one, make sure the door and frame are solid — a smart lock on a hollow-core door with a bent strike plate is not secure, it is just convenient.
Access Control for Businesses
For offices, retail, and multi-tenant buildings, a single smart lock is usually not the right answer. You want a proper access control system with fob or card readers, centralized user management, and audit logs. That is the difference between one nice lock and a real security program. Our commercial locksmith team installs and services these systems across Manhattan every week.
Padlocks
Padlocks are the go-to for anything you cannot bolt a full lockset onto — a roll-down gate, a basement storage cage, a shed, a bike. They come in keyed and combination versions and in a huge range of sizes and security grades. The portable part is the point: you can move one padlock between a storage unit and a bike rack without reinstalling anything.
Not all padlocks are equal. A hardware-store padlock with a thin shackle can be cut in seconds with bolt cutters. For anything that sits outdoors or protects real value, look for a boron-carbide or hardened-steel shackle, a shrouded body that resists cutting, and an anti-pry design. For storefront roll-down gates, we often install disk-style or high-security padlocks that resist the tools actual burglars use on NYC sidewalks.
Deadbolts
If you only upgrade one lock on your primary door, make it the deadbolt. A deadbolt throws a solid bolt deep into the door frame, and unlike a spring-latch knob it cannot be shimmed or popped with a credit card. For most NYC apartments and homes, a Grade 1 or Grade 2 single-cylinder deadbolt paired with a reinforced strike plate and three-inch screws into the stud is the real security story.
Single-Cylinder vs. Double-Cylinder
A single-cylinder deadbolt takes a key outside and a thumb turn inside. A double-cylinder needs a key on both sides, which is sometimes specified for doors with glass panels nearby so a burglar cannot break the glass, reach in, and turn the thumb turn. The trade-off is safety — if you ever need to get out in an emergency without hunting for a key, a double-cylinder can slow you down. NYC fire code restricts where they can be used in multi-family buildings, so check with a locksmith before you install one.
Specialty Locks: Cam, Mortise, and Rim
Beyond the main four categories, a few specialty locks come up constantly in NYC buildings. Cam locks are small cylinder locks that operate a flat metal cam — you see them on mailboxes, filing cabinets, and tool drawers. Mortise locks are heavy-duty lock bodies that sit inside a pocket cut into the door edge; they are standard on older Manhattan apartment doors and most commercial entries because the hardware is sturdier and the deadbolt and latch live in one solid case. Rim locks mount on the surface of the door and are common on older brownstones and back doors.
These are not locks you pick up at a big-box store and swap in yourself. Mortise and rim hardware in particular is often non-standard, and sizing a replacement usually means matching the exact pocket or backplate the old lock left behind. A residential locksmith who works on pre-war buildings can save you a lot of guesswork here.
How to Choose the Right Lock
Start with the door, not the lock. Is it the main entry to your apartment or house? Go with a strong Grade 1 or Grade 2 deadbolt, a reinforced strike plate, and optionally a smart lock layered on top. Is it a storefront with glass? You probably need a mortise deadbolt or a specialized commercial lockset, plus a hardened padlock on the roll-down gate. Is it an interior office door, a closet, or a back gate? A solid keyed cylinder or a cam lock is usually enough.
Then think about access. If keys keep getting copied or lost, a keypad or smart lock with rotating codes will save you a lot of rekeying. If you need an audit trail, you want an electronic system with logging. If it just has to stay locked and never changes hands, a good mechanical lock is the simplest and most reliable answer.
Final Thoughts
There is no single best lock, just the right lock for each door and each situation. Match the mechanism to the risk, pair it with a strong door and frame, and have a professional install it so the hardware actually performs to its rating. Do that on every door that matters and you end up with a security setup that is genuinely hard to beat — no single fancy gadget required.
Need professional help in NYC? Contact Golden Key Locksmith NYC for Manhattan Locksmith Services or Apartment Lockout Help. Available 24/7 across Manhattan and all NYC boroughs.