Door Lock Repair in DFW: Residential & Commercial Guide

Common Door Lock Problems

Door lock issues fall into a few categories:

• Key won't turn — worn tumblers, frozen pins, or a damaged cylinder
• Key is hard to insert or remove — worn key or debris in the cylinder
• Lock won't latch — the bolt doesn't engage the strike plate (misalignment)
• Lock is stiff or gritty — lack of lubrication or worn tumblers
• Door won't stay closed — the latch isn't engaging or the door is misaligned
• Electronic lock won't respond — failed actuator or wiring issue (commercial)

Problem 1: Key Won't Turn

If the key won't turn in the lock, the tumblers inside the cylinder are worn, stuck, or damaged. This is common on older locks that have been used thousands of times.

The fix: we can repair the cylinder by replacing the worn tumblers ($120-$180), or replace the entire cylinder ($180-$250). If the key is also worn, we cut a new one. If you want to keep the same key, we rekey the new cylinder to match.

Problem 2: Key Is Hard to Insert or Remove

If the key goes in stiffly or gets stuck coming out, either the key is worn (the cuts are rounded) or there's debris in the cylinder. Try lubricating with graphite (not WD-40). If that doesn't help, the key or cylinder is worn.

The fix: if the key is worn, we cut a new one ($80-$120). If the cylinder is worn, we repair or replace it ($120-$250). A new key is the cheaper first step — try that before replacing the cylinder.

Problem 3: Lock Won't Latch

If the bolt doesn't engage the strike plate, the door won't lock. This is usually caused by door misalignment — the door has sagged or shifted, so the bolt no longer lines up with the strike plate opening.

The fix: we adjust the door (realign the hinges) or reposition the strike plate. Cost: $100-$200. We can also install a reinforced strike plate with longer screws for better security.

Problem 4: Lock Is Stiff or Gritty

If the lock feels stiff, gritty, or hard to turn, the tumblers are dry or dirty. A shot of graphite lubricant can help. If it's still stiff after lubrication, the tumblers are worn and need professional service.

The fix: try graphite first (DIY, $5). If that doesn't work, we clean and lubricate the cylinder ($50-$80) or replace worn tumblers ($120-$180). Don't use WD-40 — it attracts dirt and makes the problem worse.

What It Costs in DFW

2026 pricing:

• Cylinder repair (tumbler replacement): $120-$180
• Cylinder replacement: $180-$250
• Strike plate adjustment or repositioning: $100-$200
• Lock cleaning and lubrication: $50-$80
• Door realignment: $100-$200
• Full lock replacement: $150-$300 per lock
• We diagnose on-site and recommend the most cost-effective fix

Can Door Lock Repair Be Done at My Location?

Yes. Our mobile rigs carry lock cylinders, tumbler kits, strike plates, and door alignment tools. We repair door locks on-site — at your home or business. No need to remove the door or visit a shop.

Call (682) 666-2966 with your lock issue. We'll diagnose and quote before any work begins.