Proposed Residential development in Dar Es Salaam, Tanzania Aug 14, 2021 by James Claude Home » Ongoing projects » Proposed Residential development in Dar Es Salaam, Tanzania Architect: Afritan Architects Quantity Surveyor: Africost Consult Structural engineer: Udole Consultancy, P.O Box 80081,Dsm Main constructor: Rolflex Building Construction Ltd, P.O Box 79870, Dsm.