Tara S90 16 ft. x 16 ft. Log Cabin D.I.Y. Building kit | Hud-1 EZ Buildings The Tara S90 16 ft x 16 ft open room Log cabin kit is an excellent design to provide a large amount of open space. This building offers 256 sq. ft. of total interior space. This building is an easy quick assembly project for the D.I.Y. that would needs some extra space to set up an office or some additional space for an over crowded home . The Tara S90 logs have thermal R13 value. The building is shipped direct to you via curbside. Roofing shingles are sold separately.