Our Facility. Rehab in Johannesburg South Africa. Our Intensive Inpatient Programme (Houghton House) and our Extended Inpatient Care Programme (The GAP) are both located in the peaceful suburb of Ferndale, Johannesburg. Our Outpatient Services are also located in York Ave in Ferndale. All of our centres offer beautiful green gardens, cosy common areas, large enclosed verandas, lounges, shared bedrooms, onsite parking, satellite television and swimming pools. Check out the photos below for an at-a-glance view of Houghton House.