For many months, the house at 6956 Sir Francis Drake Boulevard sat on Zillow. The 2,000-square-foot home in Forest Knolls had been purchased in 2023 for $850,000 by the Two Valleys Community Land Trust with the hope of creating a few much-needed units of affordable housing. But after more than a year of wrangling with county septic regulations, the project quietly fizzled. Now, the land trust has found a new path forward. In December, it…