Presumably you're referring to Arlington, Texas.
In general, yes, but the specifics are important.
For one thing, does the zoning allow you use both lots after division?
Are utilities, including water lines and sewer connection available?
Do easements need to be modified?
In order to document your right you will need an attorney to draft the papers. The actual division will also require more papers and interface with the municipality. None of these are free.