Most manufacturers offer tiers ranging from basic structural frames to complete "dry-in" packages.
High-end kits may include windows, exterior doors, siding, and even second-floor decking .
All necessary wooden pegs, timber screws, and metal brackets are provided .
Most modern kits include Structural Insulated Panels (SIPs) , which act as high-efficiency walls and roof insulation that wrap around the timber frame .
Pricing varies significantly based on wood species (e.g., Douglas Fir vs. Eastern White Pine) and design complexity.
Foundations, plumbing, electrical, HVAC, and interior finishes (cabinets, paint) are almost never included in the base kit price . 2. Estimated Costs for 2026