Typically, replacing a door latch assembly costs about $100–$300 if you hire a professional; DIY parts can run roughly $20–$60, while more complex or smart-lock replacements may approach $400–$500 depending on hardware and labor.
Doors use latch assemblies to control how a door latches and, in many cases, how it locks. Replacements range from a straightforward swap on an interior door to installing a new lockset with a deadbolt on an exterior entry, and prices vary by hardware quality, door type, and service location. The following overview outlines typical costs and factors to consider when planning a latch replacement.
What goes into the cost
The price you pay is driven by hardware components, labor or service fees, and whether you need a locksmith or after-hours service. The next sections break down common components and the typical price ranges for different scenarios.
Parts and components
Prices vary by the quality and type of hardware included in the latch assembly. Here are typical ranges for commonly replaced parts.
- Standard spring latch (interior door): $5–$30
- Strike plate: $2–$15
- Door handle set with latch (non-locking or simple lock): $25–$150
- Deadbolt (single-cylinder): $20–$70
- Smart lock latch or high-security latch: $100–$250
Note: For exterior doors or multi-point locking systems, prices can be higher due to additional components and installation complexity.
Labor and service fees
Labor costs depend on your location, the contractor’s rate, and whether the job is an ordinary replacement or requires locksmith services, emergency after-hours work, or drilling and alignment. Typical ranges include:
- DIY installation (parts only): $5–$60 for parts; no labor cost
- Professional latch replacement for an interior door: $60–$200 total
- Exterior door lockset or deadbolt replacement by a pro: $180–$350 total
- Emergency locksmith or after-hours service: $150–$400 plus parts
Concluding thought: The total cost reflects both hardware choices and how much professional labor is required, with DIY options offering savings but potentially requiring more time and skill.
Cost considerations by door type
Different doors require different hardware and installation effort. Interior doors usually involve standard latch assemblies and are cheaper to swap, whereas exterior doors or doors on high-security homes may involve more robust latches, deadbolts, and weatherproofing, adding to both parts and labor costs.
Summary
When planning a latch replacement, expect to pay roughly $100–$300 for professional installation and $20–$60 for parts if you DIY. More complex scenarios, such as exterior doors, multi-point locking, or smart-lock systems, can push total costs toward $400–$500 or more. Get multiple quotes, confirm compatibility of parts with your door, and decide whether a DIY approach or professional installation best fits your budget and security needs.