Off-grid living · US
A small sawmill for your own lumber
What a portable sawmill really costs, how to dry the lumber, and when you can legally build with it.
Before
- Budget for more than the mill. One new owner's 2025 setup cost $5,589, including $4,336 for the mill and $234 for 10 blades. 1
- You'll need time, space, a way to move logs (often a tractor) and a steady supply of wood. 1
- Structural lumber for a house generally needs a grade stamp. Ask your building department first. 2
During
Why a sawmill
If your land has timber, a portable mill turns trees into lumber for sheds, barns, fences, raised beds and furniture. It’s one of the production systems that can replace a trip to the hardware store, as long as you plan for the real costs and the drying time.
What it really costs
A Virginia extension agent who bought a portable mill in 2025 documented the full setup: $5,589 in total, including $4,336.40 for the mill and $233.52 for 10 blades. They also found that milling takes time, space, a way to handle heavy logs (in their case a tractor) and a reliable source of wood. 1
Enter your own numbers in the startup cost calculator.
Drying the lumber
Green lumber shrinks, twists and can rot. USDA’s Forest Products Laboratory checklist for small amounts of lumber: 3
- End-coat logs as soon as possible after felling, and saw them sooner rather than later.
- Stack on stickers, laid crosswise every 12 to 18 inches.
- Cover the pile with plywood or old boards to keep off sun and rain.
- Wait. In warm weather that isn’t too humid, 1-inch boards take about 45 to 60 days and 2-inch boards about 60 to 90 days. Winter can double that.
- Know the limit. Air drying gets 1-inch lumber to about 15 to 20% moisture. That’s fine for outdoor and farm use, but most indoor work in the U.S. needs 6 to 8%, which means a kiln.
Can you build a house with it?
Penn State Extension notes that structural lumber generally needs a grade mark from an accredited grading agency, with exceptions in Pennsylvania for agricultural buildings and recreational cabins. 2 Rules differ by state and county, so ask your building department before you mill lumber for a home.