The opposite of build (assemble) is to demolish or disassemble.
The opposite of build (raise, increase) would be to decrease, lower, or reduce.
A house is oppisite of a building :)
As the roof is the top of the building, it follows that the floor would be the opposite, as it is the bottom of the building.
The opposite of pejoration (worsening) would be amelioration (building, strengthening).
The opposite would be the building foundation, or the basement floor. (Most thesauruses simply say floor.)
If you mean the city hall it is opposite the theater and the symbol is the building with the dome on top.
The opposite of raze (knock down) could be build or construct.The opposite action regarding a damaged building is to repair rather than raze.
There is none. For some nouns there is no opposite. For example: Building, cow, worm, pain, and leather.
The opposite of the front would be the back. That is because the front is the forward part or location, as of a building, and the back is the posterior part farthest from the front.
Anabolism is the process of building tissue, its opposite is catabolism which is breaking down tissue.
According to the map, it appears to be northeast of the Adams Building of the Library of Congress. For questions using opposite phrasing: According to the map, the Adams Building of the Library of Congress appears to be southeast of the US Supreme Court Building.
Floor
well it meets in different chambers on opposite sides of the Capitol Building in Washington D.C.