Gps Friendly Address. From Hwy 400 North, Take Exit 14 Toward Cumming And Follow Hwy 20 Through The Heart Of Cumming. Follow Hwy 20 Past The Cumming City Center To A Right Onto Doc Bramblett Rd, To A Left Onto Holbrook Rd Then Right At The Round-A-Bout And Left Into Green Summers. The Home Will Be On The Right.