To convert the height from meters to centimeters, you can use the conversion factor that 1 meter is equal to 100 centimeters.
Given the height of the farmhouse:
\[ 2.307 \times 10^8 \text{ meters} \]
To convert to centimeters, multiply by 100:
\[ 2.307 \times 10^8 \text{ meters} \times 100 \text{ cm/m} = 2.307 \times 10^8 \times 10^2 \text{ cm} \]
This simplifies to:
\[ 2.307 \times 10^{10} \text{ centimeters} \]
Therefore, the height of Ali's farmhouse in centimeters is:
\[ \boxed{2.307 \times 10^{10}} \]