Stacked log construction: handcrafted (scribe-fit, large logs) or milled (uniform). Log profiles: D-log, round, Swedish cope, dovetail notch, saddle notch. Settling: 4-6% over 5 years, design for shrinkage. R-value: solid logs R-1.25/inch, chinking adds insulation. Code: ICC 400 (Standard on Design and Construction of Log Structures). $200-$400/sf.