person using a tool to install a lockset in an interior door
Photo: courtesy of Hoppe Group
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What types of locks are there? A tubular lock has its latch bolt and dead bolt in two separate holes. In a mortise lock, both bolts are encased in a steel box that fits in one hole.

What Do They Cost?
Tubular thumb latch sets start at about $100; mortises, about $200. Custom sets from specialty shops can easily surpass about $1,000.

How Long Do They Last?
Most entry sets come with lifetime warranties on their locks; they're covered for as long as you own your house. Coverage on the finish ranges from one year to a lifetime.

DIY or Hire a Pro?
Upgrading the entry set on an existing door is fairly easy, as long as the new lock is the same type as the old one. In a new slab door, drilling the holes for a tubular lock is a task most DIYers can handle. Cutting the slot for a mortise lock is more difficult; in this case, hire a locksmith to rout the mortise and install the lock.
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