Tara I70 16 ft. x 16 ft. Log Cabin D.I.Y. Building kit | Hud-1 EZ Buildings The Tara I70 16 ft x 16 ft Log cabin kit is an excellent open room 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 I70 comes standard with our insulation kit, the thermal mass rating once assembled with insulation kit using R13 insulation + R12 = R25. The building is shipped direct to you via curbside. Roofing shingles are sold separately.