Look at the whole doorway
Midlothian's downtown planning material describes a mix of older structures, some dating to the nineteenth century. The Main Street, 8th Street and Avenue F setting is a reason to describe the actual door carefully, rather than infer its lock from the building's age or appearance.
An authorized shop owner can explain whether the problem affects the key cylinder, handle or closing action. Mention the door material, any visible damage and whether the symptom changes when the door is pushed or lifted. A repair conversation should address what is there now, without assuming a modern replacement is the only possible outcome.
If a visible change is being considered on a property with special requirements, the owner should check those requirements before work is approved. A historic appearance alone does not confirm a property's status or the alterations permitted.
One key, several doors?
For a household moving in, the priority may simply be making earlier keys stop working. List the key-operated exterior locks you would like included. Note which already share a key and whether any lock is stiff, damaged or missing its working key.
Ask about rekeying compatible existing locks and explain whether you would prefer one key for several entrances. Different brands or key systems may limit what can be combined. The aim is to discuss a practical result based on your locks, rather than assume every door can be made to match.
Put the request in words
“The back door needs lifting before I can lock it” is a useful starting description. So is “the locks work, but I want to change the keys after moving.” Add the address, the door involved and who can authorize work. For a vehicle instead, include its make, model and year and whether any working key remains.
Call 469-899-8795 to discuss the specific request. If the property is nearer and actually within Red Oak, give that destination explicitly rather than the city you are calling from.