Rush, my thoughts exactly. Steve, did earlier research and did a comparisons of roof tops from The Black Camel film and the house at 1598 Pele St (sits on the corner of Prospect & Pele.) We took a jaunt up there and it does look similar!

Another possibility could be the old Police Station at 834 Merchant Street, where Detective Chang Apana worked. I believe it's already on the national register of historic bldgs. Lou