Calculate the total area of the house by summing the areas of the B Room, Bath, Kitchen, Lounge, Pasio, and Stoep.

The B Room has a width of $3 \, \text{m}$ and a length of $3 \, \text{m}$.

$$\text{Area(B Room)} = 3 \, \text{m} \times 3 \, \text{m} = 9 \, \text{m}^2$$

The Bath has a width of $1.5 \, \text{m}$ and a length of $3 \, \text{m}$.

$$\text{Area(Bath)} = 1.5 \, \text{m} \times 3 \, \text{m} = 4.5 \, \text{m}^2$$

The Kitchen has a width of $3 \, \text{m}$ and a length of $3 \, \text{m}$.

$$\text{Area(Kitchen)} = 3 \, \text{m} \times 3 \, \text{m} = 9 \, \text{m}^2$$

The Lounge has a width of $3 \, \text{m}$ and a length of $4.5 \, \text{m}$.

$$\text{Area(Lounge)} = 3 \, \text{m} \times 4.5 \, \text{m} = 13.5 \, \text{m}^2$$

The Pasio has a width of $1.5 \, \text{m}$ and a length of $4.5 \, \text{m}$.

$$\text{Area(Pasio)} = 1.5 \, \text{m} \times 4.5 \, \text{m} = 6.75 \, \text{m}^2$$

The Stoep has a width of $1.5 \, \text{m}$ and a total length of $3 \, \text{m} + 4.5 \, \text{m} = 7.5 \, \text{m}$.

$$\text{Area(Stoep)} = 1.5 \, \text{m} \times 7.5 \, \text{m} = 11.25 \, \text{m}^2$$

Sum all the individual areas:

$$\text{Total Area} = \text{Area(Main Bed)} + \text{Area(B Room)} + \text{Area(Bath)} + \text{Area(Kitchen)} + \text{Area(Lounge)} + \text{Area(Pasio)} + \text{Area(Stoep)}$$ $$\text{Total Area} = 13.5 \, \text{m}^2 + 9 \, \text{m}^2 + 4.5 \, \text{m}^2 + 9 \, \text{m}^2 + 13.5 \, \text{m}^2 + 6.75 \, \text{m}^2 + 11.25 \, \text{m}^2$$ $$\text{Total Area} = 67.5 \, \text{m}^2$$

The total area of the house is $\text{67.5 m}^2$.