How did the plan for Dixit Wada evolve from its initial concept to the foundation stone being laid?

The idea for what would become Dixit Wada started modestly. During his second visit to Sai Baba in December 1909, Kakasaheb Dixit's first thought was simply to "take twenty-five shares and build a tin roof" to provide convenience for visiting pilgrims, as mentioned in Chapter 4, chunk 27. However, this initial idea soon grew into a more ambitious project. The text in Chapter 4, chunk 28, states that the thought, "I should build a Wada," became a "firm decision in the mind." The following year, after taking Baba's approval on December 9th, the foundation stone for the stone Wada was laid on December 10th.