Hello friends. Based on my work 'The yellow house', I have tried to sum up how it was created. It consists of 3 parts: modelling, texturing and rendering.
Let us start by drawing a 'plane' with the same measurements of the house and then let us convert it to an 'editable polys'. If the house is not going to have a square shape, then let us define the 'faces' that will signify the walls.
After having deleted all the unnecessary 'faces', let us click the surface and use 'inset' to specify the thickness of the walls.
Now let us click the surfaces we created with 'inset' and 'extrude' until we reach the height we desire for the ceiling.
For the windows and doors, let us draw boxes. After having placed them, let us 'attach' them to each other.
Let us click the wall and use 'boolean' to create the window and door holes. Let us then switch it to poly and after having used 'boolean', let us delete the unnecessary 'edges'.
Where the windows are concerned, let us cover the gap between the outer and inner wall using 'bridge'.