What Kind of Door Lock Is More Secure? A Complete Guide for Denver Homeowners

You lock your door every night. But have you ever stopped to ask — is this lock actually keeping me safe? Choosing the right door lock matters more than most people realize. Therefore, understanding what kind of door lock is more secure can make a real difference for your home or business.

At Express Denver Locksmith, we work with locks every single day. So we know exactly what works, what does not, and what you should look for when upgrading your security.

Why Your Door Lock Choice Matters

A weak lock is an open invitation. Most break-ins happen through the front door. Additionally, many of those entries happen because the lock on that door was low quality or easy to defeat.

The good news is that the right lock can stop most intruders in their tracks. Moreover, upgrading your lock does not have to be expensive or complicated. It just takes knowing your options.

The Most Common Types of Door Locks

Before we compare security levels, let us look at the main lock types available today.

1. Deadbolt Locks

Deadbolts are one of the most trusted lock types in residential security. They work by extending a solid metal bolt into the door frame. This makes them very hard to kick in or pry open.

There are two main types:

• Single-cylinder deadbolts — Keyed on the outside, with a thumb turn on the inside. These are the most common choice for exterior doors.
• Double-cylinder deadbolts — Keyed on both sides. These offer extra protection against glass-break entry but require a key to exit, which raises safety concerns in emergencies.

Security rating: High

2. Knob Locks

Knob locks are found in most homes across Denver. However, they are not designed to be your primary security lock. The locking mechanism sits inside the knob itself. Therefore, a burglar can break the knob off with a simple tool and bypass the lock entirely.

Use knob locks for interior doors — not your front door.

Security rating: Low for exterior use

3. Lever Handle Locks

Lever handle locks are popular in commercial buildings and ADA-compliant spaces. They are easier to open than knob locks. However, they carry similar security weaknesses when used on exterior doors without additional reinforcement.

Security rating: Low to Medium for exterior use

4. Smart Locks

Smart locks are growing in popularity across Denver homes and businesses. They use Bluetooth, Wi-Fi, or keypads instead of a traditional key. Additionally, many smart locks allow you to control access remotely from your phone.

Some key benefits include:

• No physical key needed
• Audit trails showing who entered and when
• Temporary access codes for guests or service workers
• Real-time alerts if someone tampers with the lock

However, smart locks can be vulnerable to hacking if they use outdated software. Therefore, always choose a smart lock with strong encryption and regular firmware updates.

Security rating: High — when properly installed and maintained

5. Mortise Locks

Mortise locks are heavy-duty locks built directly into the door. They are common in older buildings and high-security commercial spaces. Furthermore, they are extremely difficult to force open because of how deeply they integrate with the door itself.

A mortise lock includes both a latch and a deadbolt in one unit. This gives you double the resistance against forced entry.

Security rating: Very High

6. Keypad and Electronic Locks

Keypad locks let you enter a PIN code instead of using a key. They are convenient, especially if you frequently lose keys. Moreover, many models allow multiple user codes, so you can give access to different people without making copies of a physical key.

However, worn-down buttons can reveal your PIN over time. Therefore, change your code regularly to stay protected.

Security rating: High — when used correctly

7. Padlocks

Padlocks are portable and versatile. However, they vary widely in quality. A cheap padlock offers almost no real security. On the other hand, hardened steel padlocks with anti-pick and anti-shim features can be very strong.

For serious security, always choose a padlock with a closed shackle design. This leaves less exposed metal for bolt cutters to grab.

Security rating: Low to High — depends entirely on the quality

So, What Kind of Door Lock Is More Secure?

Here is a simple answer: a high-quality deadbolt combined with a smart lock or keypad system gives you the best overall protection.

Additionally, the door itself and the frame around it matter just as much as the lock. A strong lock on a weak door frame offers limited protection. Therefore, consider reinforcing your door frame and strike plate at the same time.

For commercial properties, mortise locks combined with access control systems offer the highest level of security available.

Key Features to Look for in a Secure Door Lock

When shopping for a new lock, keep these features in mind:

• ANSI Grade 1 rating — This is the highest residential security grade. Look for it on any deadbolt or lock you buy.
• Anti-pick pins — These make it much harder for someone to pick the lock open.
• Anti-drill protection — A hardened steel core resists drilling attacks.
• Bump resistance — Lock bumping is a common break-in technique. Choose locks that are rated bump-resistant.
• Reinforced strike plate — Use a heavy-duty strike plate with 3-inch screws for maximum frame support.

When to Upgrade Your Door Lock

You should consider replacing your lock if:

1. You just moved into a new home or rental property
2. Your key was lost or stolen
3. Your current lock is old or showing wear
4. You recently ended a relationship with someone who had a key
5. Your lock feels loose or does not turn smoothly

Furthermore, if you are not sure what grade of lock you currently have, a professional locksmith can assess it for you.

Let Express Denver Locksmith Help You Choose the Right Lock

Choosing the right lock can feel overwhelming. However, you do not have to figure it out alone. At Express Denver Locksmith, we help Denver homeowners and business owners select, install, and upgrade locks every day.

We are available 24 hours a day, so you can call us whenever a lock question — or a lock emergency — comes up.

• Address: 3141 Walnut St #305, Denver, CO 80205
• Phone: +1 720-702-2332
• Service Area: Denver and nearby areas