Painted Wall

There is actually no end. 
Probably will be getting the space you don't need for a price you can't afford.

"...So now you have talked and expressed your intention to the first contractor available. Without you yourself having seen the plan of the house, not to say the contractor, you are very impressed that the contractor possesses the ability to give the quotation on the spot. And it is reasonable too.

Why is it seems so reasonable to you? When you tell somebody that you want to push a wall to the boundary line, you have to consider a few aspects. The first thing to know is what are the items embedded inside the wall: electrical conduits, cold water pipes, telephone lines, structural columns, structural beam, down pipes from kitchen sink, etc. 

You cannot literally push a brick wall, you have to demolish it, and rebuild at a designated location. All electrical conduits, cold water pipes, telephone lines and down pipes have to be repositioned and installed during the laying of the brick wall . Do not simply demolish the structural columns or structural beam if you don’t want your house to collapse. 

Have you considered the size, shape or the type of windows you want to have on the wall? If the wall is exactly at the boundary, does your roof eave stop there too? If so, the rain will seep through the window. How high the new wall need to be, and how does it affect the existing roof. If the kitchen’s window is directly looking into the back lane, what type of privacy and security measures are to be taken.

If all the above have not been thought of, and no drawings have been utilized, how do you rationalize the reasonable quotation by the contractor....?"