One、Is it necessary to dig into the wall when installing wall cabinets?
1、Situations where walls can be demolished
If you have a smooth, non-load-bearing wall (such as a stud wall or lightweight wall used solely for separating rooms), you can remove the wall to install cabinets. This maximizes space utilization, but it may negatively impact sound insulation between rooms.

2、 Situations where demolition is not permitted/required.
If the wall is a load-bearing wall, it is absolutely not allowed to demolish the wall to install cabinets, as this will reduce the structural load-bearing capacity of the building and may cause the ceiling to fall down.
Another scenario is when no wall demolition is required. If the existing layout already incorporates recesses, you can measure the dimensions of the recess and use these measurements to design the cabinet dimensions and style. This approach avoids unnecessary demolition costs while maximizing space utilization.
II. How to excavate walls to install wall cabinets
1、Before demolition, consider whether your neighbors are renovating or moving in. Also, assess whether the demolition process will negatively impact your neighbors. Otherwise, you might end up getting beaten by your neighbors for creating a hole in your wall.
2、First, use a cutting tool to remove the painted layer in the area to be demolished.
3. It is recommended to use a hammer drill to gradually remove the material. Avoid using large hammers indiscriminately, as excessive vibration can affect the undamaged wall surfaces.
4、After demolition, inspect the adjacent walls for any damage, such as peeling or voids in the plaster layer. If any damage is found, remove and repair the affected area with new plaster.
5. Then, install the built-in wall cabinets and fill any gaps with lightweight materials to prevent affecting the floor's load-bearing capacity.