From Northern Pinellas County:

Drive north on U.S. 19
Turn right at Cortez Boulevard / Highway 50
U-Turn at Sandhill Road
Oakhill will be on your right
 

From Southern Pinellas County:

Drive north on U.S. 19
Turn right at Cortez Boulevard / Highway 50
U-Turn at Sandhill Road
Oakhill will be on your right

From Tampa:

Drive north on I-275 towards I-4
Merge onto I-75 north
Take exit 301 to US-98 / SR-50 towards Orlando / Brooksville
Turn left at Cortez Boulevard / US-98 North / Highway 50
Turn left at FL-50 West / Cortez Boulevard
Turn left to continue on FL-50 West / Cortez Boulevard
Oakhill will be on your right