The First Floor Slanted

If the floor is only sloping on the first story of your building then the reason could be damaged or missing support or joists.
The first floor slanted. If floor sloping is limited to the first story of the house that is there is no corresponding slope to the 2nd story floor then the reason could be missing support posts and damaged joists. Sloping floors in the first story. Supporting post or beams have been removed modified or cracked. Except for that slope the floor itself might be flat.
In many cases fixing a sloping floor is an expensive and lengthy operation. A slant slope situation might be one where over the course of 15 or 20 horizontal feet the floor slopes down one or two inches. Floor joist are damaged undersized or over spaced. In some cases the slope is caused or aggravated by similar deflection in the girder main bearing beam that supports one end of the joist sets but even this scenario there is usually not a problem that needs repair.
On the first floor bedroom the floor slopes down by about 5cm from the start of the door frame to the wall. Sloping on the first floor. However if the second floor slopes along with the first floor then there could be a more serious structural cause such as foundation damage or settlement. It might also be difficult to find the right company to do the job.
The top of the door frame is also sloped down. Be suspicious of wood posts set on dirt floors or wood posts with concrete poured around the post bases. Floors that slant or slope floor slopes and slants are common in old houses. How to inspect your home when your floors are sloping.
Sloping floors are most often caused by normal and acceptable deflection bend in the wood joists which comprise the floor structure. Basically they are saying if a floor is sloping over a 1 2 to 1 inch in twenty feet then there is concern. Nearly all will say that if a floor slopes 1 and 1 2 inches in twenty feet or more that there should be further investigation. Floors that slope 2 or 3 inches in 20 feet would be a very serious concern.
Sloping on the second floor. If the first floor is level and the second floor slopes then there is a possibility of. If there is sloping on the second floor though there could be serious structural issues that need to be addressed. Load bearing walls being modified moved or removed.
There are lots of reasons that might cause sloping floors in a. Sometimes you may notice sloping only on the second story of the structure. This is not a quick fix and for a first time homeowner with a limited budget and not much experience with houses i d stay away. Foundation issues deteriorating wood supports especially sills which rest on the foundation footer improperly installed joists or sub floors and other issues can all cause a floor to slope or sag.