The Harding Law Office located at 10400 Park Meadows Drive in Lone Tree. It is south of Park Meadows Mall and E-470, just a bit northwest of the intersection between I-25 and Lincoln Avenue (NOT Lincoln Street downtown).
Here is a street view approaching from the north:
The cross street (and the entrance to the parking lot) is a street labeled 10380. Here is a picture of the street view approaching from the south:
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You can park in the parking lot with the yellow signs in the picture above.
It is just south of the Lincoln Station light rail stop, the southernmost point of the light rail. Here is a link and a map.
The name of the building is Aspect.