We're about halfway through the Winter Sale and I wanted to share something important. **59 spots remaining** (at the $50 price). The most common mistake I see in natural building? People skip proper foundation work. Bad foundation work can lead to severe and expensive problems like: walls cracking, uneven sinking of walls, and moisture intrusion (the leading cause of building failure). All from improper foundations. Cost to fix: $5,000-$50,000. Or worse - starting over. Here's the problem: Most natural building workshops don't teach foundations. **But this course STARTS with foundations:** - When to use concrete slabs vs. rubble trench vs. stone - Proper drainage design - Moisture barriers - Frost protection - Foundation work for ALL climates This section alone is worth more than the $50 sale price. And it applies whether you're building cob, straw-clay, rammed earth, adobe, strawbale, hempcrete, or conventional building. **59 spots left.** Sale ends December 31st, midnight. Get the complete video course: https://www.thiscobhouse.com/winter-sale Alex