Generally, the curtilage of a home is the "area around the home to which the activity of home life extends." Oliver, 466 U.S. at 180; see also Wellford v. Commonwealth, 227 Va. 297, 301, 315 S.E.2d 235, 238 (1984) (defining "curtilage" as the "space necessary and convenient, habitually used for family purposes and the carrying on of domestic employment; the yard, garden or field which is near to and used in connection with the dwelling"). "[W]hether a particular place is within the curtilage of the home is determined on a case-by-case basis." Jefferson, 27 Va. App. at 16, 497 S.E.2d at 481 (citing United States v. Dunn, 480 U.S. 294, 301 n.4 (1987)). In determining whether the area in question constitutes curtilage, "particular reference" to the following four factors is helpful:
 the proximity of the area claimed to be curtilage to the home,
 whether the area is included within an enclosure surrounding the home,
 the nature of the uses to which the area is put, and
 the steps taken by the resident to protect the area from observation by people passing by.