A view of the most recent design of the new Hosmer Elementary School. Members of the School Building Committee worry about controlling the costs in Watertown’s three elementary school building projects in a climate with a competitive construction industry and international tariff wars. The projects include brand new schools at Hosmer and Cunniff elementary schools and a major renovation and addition at Lowell Elementary School. At least one member was bothered that Watertown may have missed an opportunity to keep the projects on budget using an alternative to the typical construction model. The design firm, Ai3 Architects, have nearly completed the design development phase (the second of three major phases before construction) and the costs are currently being estimated.