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New House Toilet Relocation

Admin October 08, 2026

Relocating the toilet in a new house, also known as toilet displacement, requires selecting an appropriate method based on the bathroom's drainage system. Displacement is relatively straightforward for same-floor drainage, while there are multiple methods for cross-floor drainage. Additional considerations apply if installing a smart toilet.

Same-Floor Drainage Toilet Displacement

A sunken bathroom features same-floor drainage, with the bathroom floor approximately 40cm lower than the floor level. The drainage pipes are located within the home, making toilet displacement relatively simple. You can directly relocate the toilet and modify the drainage pipes.

Cross-Floor Drainage Toilet Displacement

  1. Using a Displacement Connector: Suitable for small-scale, short-distance displacement, typically ranging from 10 to 30 centimeters, and generally not exceeding 40 centimeters, although some suggest not exceeding 2 meters. If the displacement distance is too long, it may lead to blockages later on. Ensure a slope of over 3% is created where the displacement connector is embedded to facilitate drainage, and proper waterproofing must be done.
  2. Raising the Floor: This involves constructing a base platform 180 to 200 millimeters high to embed the sewage pipe. However, this method has significant drawbacks, as the raised floor makes usage uncomfortable and increases the risk of tripping, making it somewhat counterproductive.
  3. Converting Floor Drainage to Wall Drainage: Connect the toilet directly to the sewage riser, but the toilet can only be moved to the adjacent wall of the sewage riser, not to the opposite wall. After modification, the toilet is less likely to block, and this method is suitable for both same-floor and cross-floor drainage. Converting to wall drainage requires constructing a false wall, which can be combined with niches to create storage space during renovation.
  4. Creating a New Hole in the Floor for Displacement: This involves directly creating a new hole in the floor, which requires subsequent formwork and pouring. However, most homeowners downstairs may not accept this method.

Considerations for Installing a Smart Toilet

  1. Measuring Circuit Load: The circuit load must be ≥1500W. For renovations of old houses, additional circuit expansion is necessary, while for new house renovations, prioritizing models with zero water pressure requirements is advisable.
  2. Checking Water Pressure and Flow Rate: The flushing function of a smart toilet relies on stable water pressure, especially for tankless one-piece models, which require a water pressure range of 0.15 to 0.75MPa.
  3. Measuring the Distance from the Sewage Outlet Center to the Wall (Pit Distance): There are typically two standard pit distances: 305mm and 400mm. The distance from the sewage outlet center to the wall must meet the toilet's requirements. Unless in special circumstances, it is not recommended to install a displacement connector, as it alters the slope of the sewage pipe, leading to long-term accumulation of dirt and blockages.