Worthington's Range, "Howard's Chance", "Howard's Range", or "Tierney Gambrel Roof House", is a historic slave plantation located between Clarksville, Columbia and Simpsonville in Howard County, Maryland, United States.

The "Miller Cemetery" lies about two hundred feet Northwest from the house.

[1] In 2014, former Howard County Department of Planning and Zoning director's firm Land Design and Development petitioned the planning board to subdivide the historic property and cemetery for a 150 unit housing development called "Enclave at Tierney Farm".

Density was increased by having the county extend sewer service to the rural property.

The project was delayed a single year because of an indefinite lack of school capacity in the region.