Tucked into more than 14 pristine acres in Cumberland Center, Maine, the office of the Northeastern Lumber Manufacturers Association (NELMA) is just a scenic 25-minute drive north of Portland.

Washington studio Prentiss Balance Wickline Architects has used plywood, shiplap siding and standing-seam metal to clad this compact dwelling, which sits at the base of a forested mountain. The Lot 6 ...