A new door lock seems simple. Buy it, take out the old one, put in the new one. But many locks get returned, installed wrong, or fail early because a few key details were missed.
Before you buy, take ten minutes to check your door, your frame, and your needs. That small step saves you money, extra trips to the store, and a weak lock that only looks secure.
Why Checking First Matters
A lock is only as strong as the door, frame, and installation around it. Many forced entries do not break the lock at all. They split the wood frame around the strike plate.
According to FBI burglary data, more than half of all burglaries in 2019 involved forcible entry. A careful check before door lock installation Kansas City homeowners plan can close those weak spots.
Check Your Door’s Measurements
Every door lock installation Kansas City job we do starts with a tape measure, because locks are not one size fits all. The wrong size means a lock that will not fit, will not latch, or leaves gaps.
1. Door Thickness
Most exterior doors are 1-3/4 inches thick. Interior doors are often 1-3/8 inches. Check the lock’s box to make sure it fits your door.
2. Backset
The backset is the distance from the edge of the door to the center of the lock hole. The two common sizes are 2-3/8 inches and 2-3/4 inches. Many locks adjust to both, but not all.
3. Bore Hole Size
The large hole through the face of the door is called the bore hole. The standard size is 2-1/8 inches. Older doors may have smaller or odd-sized holes that need work before a new lock fits.
4. Edge Bore and Latch Plate
Check the smaller hole on the door edge where the latch goes. Note whether your latch plate is square-cornered, round-cornered, or drive-in. Matching it avoids extra chiseling.
Quick tip: Take a photo of your current lock, door edge, and strike plate before you shop. It makes choosing the right replacement much easier.
Check the Door and Frame Condition
A new lock on a damaged door is a waste of money. Look closely at these areas:
- Door material: Solid wood, metal, and fiberglass doors hold locks well. Hollow-core doors do not belong on exterior entries.
- Cracks or splits: Look near the existing lock holes and edges.
- Frame strength: Check the jamb where the bolt goes. Soft, rotted, or cracked wood will not hold.
- Door alignment: The door should close easily without lifting or pushing. If it sticks, the bolt may not fully extend.
- Weather damage: Kansas City’s humid summers and freezing winters can make wood doors swell and shrink. Sticking doors often need adjustment first.
Reinforce the Strike Plate
Most strike plates come with short screws that only reach the thin door trim. Swap them for 3-inch screws that reach the wall stud. This one change makes a door far harder to kick in.
Choose the Right Type of Lock
Different doors need different locks. The right choice depends on where the door is and who uses it.
Lock Type | Best For | Security | Notes |
Knob lock | Interior doors | Low | Not enough alone on exterior doors |
Lever handle lock | Easy access, seniors, kids | Low to medium | Easier to use, pair with a deadbolt |
Single cylinder deadbolt | Most exterior doors | High | Key outside, thumb turn inside |
Double cylinder deadbolt | Doors near glass | High | Needs a key on both sides, check fire safety |
Smart lock | Keyless entry and remote access | High with a good deadbolt | Needs batteries, Wi-Fi, or Bluetooth |
Mortise lock | Older homes and commercial doors | Very high | Needs a special pocket cut in the door |
Single vs Double Cylinder Deadbolts
A double cylinder deadbolt needs a key on both sides. That stops someone from breaking nearby glass and reaching in to turn the lock. However, it can slow your exit in a fire. Keep a key nearby, and check local building rules before you install one.
Check the Lock Grade
The ANSI/BHMA grade tells you how much testing a lock passed. It is one of the most useful details on the box.
What the Grades Mean
- Grade 1: The highest residential and light commercial rating.
- Grade 2: Strong, reliable protection for most homes.
- Grade 3: Basic protection, best for low-risk or interior doors.
According to Locksmith Ledger, the A156.2 standard tests Grade 1 locks to at least 800,000 cycles. Grade 3 locks only need 200,000. Grade 1 lever locks must also hold up to a heavy twisting test:
“Shall be subjected to torque of 1,000 pounds inches.” ANSI/BHMA Abusive Locked Lever Test for Grade 1, as reported by Locksmith Ledger
For exterior doors in Kansas City homes, Grade 1 or Grade 2 is the smart choice.
Think About Keys and Convenience
A lock should fit how you live. Ask yourself these questions:
- Do you want one key for every door? Ask for keyed-alike locks.
- Who needs access? Family, pet sitters, or cleaners may benefit from a keypad or smart lock.
- Do you rent? Check your lease before changing locks.
- Do you have kids or older family members? Lever handles are easier to use.
Keyed Alike Locks
Buying locks keyed alike means one key opens every door. If you already own good locks, a locksmith can rekey them to match instead. Our lock rekeying service makes this simple.
Smart Lock Checklist
Smart locks add convenience, but they need a few extra checks:
- Door gap: Some smart locks need extra room inside the door.
- Wi-Fi signal: Remote control needs a good signal near the door.
- Power: Know how long the batteries last and how you get in if they die.
- Backup key: Make sure the lock has a keyway or another backup entry.
- Deadbolt strength: A smart lock should still use a solid Grade 1 or Grade 2 deadbolt.
Our smart lock installation team can check your door before you buy.
DIY or Professional Installation?
Many homeowners can swap a basic lock that fits existing holes. But some jobs are best left to a pro:
- New holes need to be drilled.
- The door or frame is damaged.
- You are installing a mortise lock or smart lock.
- The door sticks or does not latch smoothly.
- You want strike plate and frame reinforcement done right.
A poorly installed lock can bind, wear out early, or fail under force. Professional door lock installation Kansas City homes rely on makes sure the bolt fully extends and the frame holds.
How My Key Guy Can Help
My Key Guy is a locally owned, licensed, and insured locksmith serving Kansas City, Missouri, and Kansas. Our lock installation service covers deadbolts, levers, smart locks, and more.
When you book door lock installation Kansas City homeowners trust, we:
- Check your door, frame, and measurements
- Recommend the right lock type and grade
- Install and reinforce the strike plate
- Test every lock for smooth operation
- Give a clear price before work begins
Key Takeaways
- Most burglaries use force: In 2019, 55.7% of U.S. burglaries involved forcible entry, often through doors.
- Homes are the main target: Residential properties made up 62.8% of burglaries that year.
- Grades show real strength: Under ANSI/BHMA A156.2, Grade 1 locks are tested to 800,000 cycles, versus 200,000 for Grade 3.
- Grade 1 takes more force: Grade 1 locks must survive strike blows of up to 120 foot-pounds, while Grade 3 is tested at 60 foot-pounds.
- Fit matters: Standard residential doors use a 2-1/8 inch bore hole and a backset of 2-3/8 or 2-3/4 inches.
- The frame is the weak point: A strong lock on a weak frame or short strike screws can still be kicked in.
Frequently Asked Questions
Measure your door thickness, backset, and bore hole. Most exterior doors are 1-3/4 inches thick with a 2-1/8 inch bore and a 2-3/8 or 2-3/4 inch backset.
Grade 1 or Grade 2 is best for exterior doors. Grade 3 is fine for low-risk interior doors.
Yes, if the new lock fits the existing holes and your door is in good shape. For new holes, damaged frames, or smart locks, a professional install is safer.
Yes. Every exterior door, including garage entry and back doors, should have a quality deadbolt. Burglars often target side and back doors.
A smart lock with a strong deadbolt can be just as secure. Choose a trusted brand, keep firmware updated, and use a strong code.
Cost depends on the lock type, grade, and whether new holes or repairs are needed. For door lock installation Kansas City prices, call for an upfront quote based on your doors.
Rekeying is often enough if your locks are in good shape. Replace them if they are worn, damaged, or low grade.
The door may be out of alignment, or the strike plate may be in the wrong spot. A locksmith can adjust the strike or hinges so the bolt extends fully.
Final Thoughts: Check First, Lock Smarter
A new lock is only as good as the door, frame, and installation behind it. Measure first, check the frame, choose the right grade, and reinforce the strike plate. Those steps turn a basic lock into real protection.
For careful, honest door lock installation Kansas City homeowners can count on, call My Key Guy. We check everything first and install it right the first time.
Ready for a stronger front door? Call (913) 270-0703, email mykeyguykc@gmail.com, or request a free estimate today.
