House Lock Change · Denver

Updating Lock Hardware on a 100-Year-Old Denver Door

Lock change service for a 100-year-old door with keyed locks on the exterior and interior, including mortise cylinder, thumbturn, deadbolts, and a storm door knob set.

Brass keyed lock, knob, and mortise-style edge hardware on an older residential door in Denver
Approved technician photo from this completed job.

This Denver house lock change involved a 100-year-old door with keyed locks on both the outside and inside. The attached photo shows brass entry hardware, including a keyed lock and knob, on a door with a mortise-style edge lock body. The documented need was to put on the knob while addressing the existing locking arrangement.

The service scope identifies a mortise cylinder and thumbturn, deadbolts, and a knob set for the storm door. These components represent a coordinated approach to updating the door’s lock hardware rather than treating the main entry knob as an isolated part. The work was also documented to be keyed to the customer’s key, an important consideration when both sides of an older door use keyed hardware.

For a century-old entry door, matching the replacement components to the existing lock layout matters. A mortise cylinder, thumbturn, deadbolts, and compatible knob hardware each serve a defined role in the door assembly, while the storm door requires its own knob set. The documented labor covers the installation work associated with this lock change and hardware update.

Brass keyed lock, knob, and mortise-style edge hardware on an older residential door in Denver - view 2Brass keyed lock, knob, and mortise-style edge hardware on an older residential door in Denver - view 3Brass keyed lock, knob, and mortise-style edge hardware on an older residential door in Denver - view 4