Skip to content 
If you’ve ever stood at a hardware store or called a locksmith wondering “how much should a duplicate key cost?”, you’re not alone. It’s one of the most common questions homeowners, renters, drivers, and business owners ask, and the answer isn’t always as simple as a few dollars.
The truth is, duplicate key cost depends on the type of key, the technology inside it, and who’s making it. In this guide, we’ll break everything down in plain English so you know exactly what to expect, what’s fair, and when it makes sense to call a professional locksmith instead of a big-box store.
This guide is written by the experts at Best Locksmith – Dallas, serving homeowners and businesses across the Dallas-Fort Worth area.
How Much Should a Duplicate Key Cost on Average?
Here’s a quick snapshot before we dive deeper:
- Basic house key: $2 – $6
- High-security house key: $8 – $25
- Car key (no chip): $5 – $20
- Transponder car key: $75 – $180
- Key fob replacement: $120 – $400
- Commercial or restricted key: $15 – $50+
So when people ask “how much should a duplicate key cost?”, the real answer is:
👉 It depends on the key, not just the cut.
Duplicate House Key Cost: What’s Normal?
Standard House Keys
These are your basic, everyday metal keys used for older homes, apartments, and interior doors.
Average cost:
💲 $2 – $6 per duplicate
These can usually be duplicated quickly, but quality matters. Cheap copies often wear down faster or don’t turn smoothly in the lock.
High-Security or Restricted Keys
If your key says “Do Not Duplicate” or belongs to a newer lock system, it likely requires specialized equipment or authorization.
Average cost:
💲 $8 – $25+
Many hardware stores cannot legally or physically duplicate these keys, which is where a licensed locksmith like Best Locksmith – Dallas becomes essential.
How Much Should a Duplicate Car Key Cost?
Car keys are where pricing can vary the most, especially with modern vehicles.
Traditional Car Keys (No Chip)
Older vehicles with basic metal keys are still inexpensive to duplicate.
Average cost:
💲 $5 – $20
Transponder Keys (Chip Keys)
Most cars made after the early 2000s have a chip inside the key that communicates with the vehicle.
Average cost:
💲 $75 – $180
This includes:
- Cutting the key
- Programming the chip
- Testing the ignition and doors
Smart Keys & Key Fobs
Push-to-start vehicles use advanced encrypted systems.
Average cost:
💲 $120 – $400+
Dealerships are usually the most expensive option. A mobile locksmith can often save you hundreds while doing the job faster.
Commercial & Business Key Duplication Costs
Business keys are often part of master key systems or restricted access setups.
Average cost:
💲 $15 – $50+
Pricing depends on:
- Whether the key is restricted
- The lock brand (Medeco, Mul-T-Lock, etc.)
- Authorization requirements
Businesses choose professional locksmiths to protect security, not just save a few dollars.
Why Duplicate Key Prices Vary So Much
If you’ve ever compared prices and wondered why one quote is higher than another, here’s why:
1. Key Type & Technology
The more advanced the key, the higher the cost.
2. Programming Requirements
Car keys and smart keys require specialized tools and software.
3. Quality of the Cut
Precision cutting prevents jams, broken keys, and lock damage.
4. Who’s Making the Key
Hardware stores may be cheaper upfront, but professional locksmiths provide:
- Proper testing
- Higher-quality blanks
- Guaranteed functionality
Is It Cheaper to Duplicate a Key or Replace a Lost One?
Always duplicate before you lose your last key.
- Duplicate key cost: $2 – $25 (most cases)
- Lost key replacement: $75 – $400+
Waiting until you’re locked out almost always costs more.
When Should You Call a Professional Locksmith?
You should call a locksmith if:
- You need emergency services or after hours key duplication services
- The key is marked “Do Not Duplicate”
- It’s a car key with a chip or fob
- The duplicate from a hardware store doesn’t work
- You want long-term reliability
- You need mobile service in Dallas
Best Locksmith – Dallas specializes in accurate, professional duplication for residential, commercial, and automotive keys, done right the first time.
FAQ: How Much Should a Duplicate Key Cost?
How much should a duplicate key cost for a house?
Most house keys cost between $2 and $6, while high-security keys range from $8 to $25.
How much should a duplicate car key cost?
Basic car keys range from $5 to $20. Transponder keys usually cost $75 to $180.
Why is car key replacement so expensive?
Because they require programming, specialized tools, and encrypted communication with the vehicle.
Can all keys be duplicated?
No. Some keys are restricted or require authorization, which only licensed locksmiths can handle.
Is a locksmith more expensive than a hardware store?
Not always. For car keys and high-security keys, locksmiths are often cheaper than dealerships and far more reliable.
Final Thoughts: Know the Real Cost Before You Duplicate
So, how much should a duplicate key cost?
Enough to be done correctly, securely, and reliably.
The cheapest option isn’t always the best, especially when it comes to your home, car, or business security.
If you’re in Dallas and want a duplicate key made the right way, Best Locksmith – Dallas is ready to help with fast service, honest pricing, and professional results you can trust.