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How to Move the Toilet in a Building

Admin September 23, 2026

Moving the toilet (toilet relocation) in a building can be achieved through the following methods, and the appropriate solution should be selected based on the drainage type, relocation distance, and construction conditions:

1. Use a Toilet Relocator Suitable for small-scale relocation (recommended not to exceed 2 meters), especially for scenarios with inter-floor drainage and where the floor slab cannot be excavated. By installing a relocator to extend the sewage pipe, two points should be noted:

  • Drainage Slope: After relocation, a slope must be set (usually ≥2%) to prevent sewage stagnation and blockage;
  • Floor Slab Treatment: For inter-floor drainage, the floor slab needs to be raised to hide the relocator, which may affect the floor height and requires advance planning. This method is low-cost and quick to construct, but a long relocation distance significantly increases the risk of blockage and is only recommended for short-distance adjustments.

2. Convert Floor Drainage to Wall Drainage Change the toilet's drainage method from floor drainage to wall drainage, which requires meeting the following conditions:

  • Location Limitation: The toilet can only be relocated to the wall adjacent to the sewage riser and cannot be moved to the opposite wall;
  • Construction Points: A false wall needs to be built to hide the water tank and pipes, and a niche design can be incorporated to increase storage space;
  • Advantages: Applicable to both same-floor and inter-floor drainage, with a short and smooth drainage path and a low probability of blockage. This method is suitable for scenarios with high requirements for aesthetics and practicality but will occupy some wall space.

3. Relocation in a Sunken Bathroom For sunken bathrooms (where the floor slab is sunken by 30-40 cm), the pipes can be directly adjusted within the sunken box:

  • Flexibility: The sewage pipe can be freely extended or shortened, and the relocation distance is not strictly limited;
  • Waterproofing Requirements: After construction, a new waterproof layer needs to be applied, and the secondary drainage in the sunken box must be unobstructed;
  • Floor Height Impact: The sunken box needs to be backfilled, which may reduce the net height of the bathroom and requires advance calculation of the floor height. This method is suitable for new home decoration or the renovation of sunken bathrooms, but for old home renovations, it is necessary to confirm whether the structure is sunken.

4. Relocate the Sewage Pipe to the Neighbor's House Only applicable to inter-floor drainage, requiring negotiation with the downstairs neighbor:

  • Operation Method: Open a hole in the neighbor's ceiling and directly lead the sewage pipe to the target location;
  • Difficulties: Written consent from the neighbor is required, and the construction and repair costs must be borne;
  • Risks: If the neighbor objects or future renovation damages the pipe, disputes may arise. This method is simple and direct but relies on interpersonal relationships and requires careful assessment of feasibility.

5. Use a Wall-Mounted Toilet Achieve relocation through a concealed water tank and a wall-mounted toilet:

  • Case Support: There are instances where a relocation of 1.5 meters has not caused blockage for 2 years, proving its reliability;
  • Advantages: The water tank is concealed in the wall, saving space, with flexible relocation distance, suitable for small apartments;
  • Note: The water tank frame needs to be pre-embedded in advance, and the wall must be a load-bearing wall or reinforced. This method is suitable for users who pursue a modern and minimalist style and have sufficient budget.