A practical guide covering whether you can install add-on fixtures (water purifiers, dishwashers, bidet seats) in rental homes, how to get permission, and how to handle restoration to original condition when moving out—making it easy to improve your quality of life.
Reviewed by: Nobuyuki Mori
When living in a rental apartment, many people wish for "a bidet seat," "a dishwasher," or "a water purifier for better-tasting drinking water." In fact, many of these fixtures can be installed in rentals if you follow the right steps, significantly improving your quality of life. This article covers how to determine whether each fixture can be installed, how to check with your management company, and what to do before moving out.
Want to install a washlet in your rental but unsure if you're allowed? This guide covers what to check during property viewings, how to get permission from building management, aftermarket installation methods and costs, and move-out restoration rules—all explained simply.
A comprehensive guide to installing a bidet toilet seat in a rental property. Learn how to determine if electrical work is needed based on outlet availability, how to request permission from your landlord or property management company, DIY installation steps, and how to restore the original condition when moving out.
To enjoy DIY and wallpaper renovation while keeping move-out costs down, understanding restoration rules and how to obtain landlord permission is key. We'll explain specific steps for using removable wallpaper, painter's tape, and staples, plus typical repair costs if issues occur.
Bidet seats are among the simplest retrofit fixtures for rentals because restoration to original condition requires only unplugging the unit.
Checking whether installation is possible requires confirming three things: whether the existing toilet seat is compatible with bidet attachment, whether there is a power outlet in the bathroom, and whether the shutoff valve shape is compatible. Most modern apartment bathrooms meet these conditions, making replacement relatively straightforward.
Installation steps are as follows. First, remove the existing toilet seat and close the water shutoff valve. Next, connect the bidet's T-shaped connector to the shutoff valve, attach the bidet unit, and plug it into the outlet. If you're unsure, you can hire a professional installer (around ¥10,000–20,000).
At move-out, you must remove the product you purchased and reinstall the original toilet seat. It's important to store the original seat in a cardboard box so you can restore it without any issues.
Advance check with your management company is not strictly required, but it's wise to mention that "I'm considering installing a bidet seat, with plans to restore the original when I move out." This prevents future disputes.
Dishwasher installation comes in two main types.
Installation-free countertop (tank-type) dishwashers require manual water refilling and only need a power outlet. Products like Panasonic's "Petit Dishwasher" and TanTan are well-known examples. Since you simply place it next to the sink, it's an ideal choice for rentals. However, capacity is limited, making it suitable for 1–2 person households.
Branched faucet dishwashers connect to your kitchen faucet via a water branching connector, allowing automatic water supply. Panasonic's countertop dishwashers often use this method. Installing a branching connector may require management company approval.
Key points to confirm with your management company: Ask whether "the installation can be done in a way that can be fully restored." In most cases, if you save the original faucet and water fixtures and agree in writing to restore them at move-out, approval will be granted.
Important at move-out: If you installed a branching connector, you must remove it and restore the original water fixture at move-out. If there are stubborn silicon residue marks or water stains around the faucet, you may be charged cleaning fees. Maintain regular cleaning habits.
Depending on how you install it, a water purifier may or may not require permission.
Countertop water purifiers with adapter-style faucet attachments can be installed without any work. TOTO and Cleansui products are typical examples. These are treated as "home appliances," and management company approval is generally not required. Simply remove the unit at move-out to restore the original condition.
Under-sink water purifiers require plumbing work underneath the sink. Since installation requires drilling holes in the sink and modifying pipes, approval from both the management company and landlord is essential. Unauthorized installation may result in restoration charges (several tens of thousands of yen) at move-out.
Faucet-integrated water purifiers replace your existing faucet with a water purifier faucet. You can restore the original condition by saving the old faucet and reinstalling it at move-out, but it's recommended to notify your management company in advance.
When installing add-on fixtures, follow these steps to smoothly confirm with your management company:
Daily maintenance of add-on fixtures can significantly reduce move-out disputes.
Always keep the original items: Store the original toilet seat, faucet, and water fixtures in cardboard boxes in a storage space (closet or cabinet). Without them, you may face reimbursement costs at move-out.
Take before and after photos: Document the original condition with photos, and photograph the same angle after installation. This serves as proof of whether something was original or retrofit.
Don't neglect regular cleaning: Water fixture areas are prone to water stains and mold. If there is damage beyond normal wear and tear at move-out, you may be charged for repairs. Maintain regular cleaning habits.
When choosing add-on fixtures for your rental, the key is to select items that are "work-free, portable, and restorable." Bidet seats and countertop water purifiers can typically be installed and removed without permission, and branched faucet dishwashers are usually approved if you check with your management company first.
Use add-on fixtures wisely while respecting your restoration to original condition obligations.
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