A thorough guide to setting up your internet in rental apartments. Covers comparisons of fiber optics, home routers, and mobile Wi-Fi, application procedures with management companies, and solutions when speeds are slow.
Reviewed by: Nobuyuki MoriPresident, M-Assets Co., Ltd. / Licensed Real Estate Transaction Specialist (Miyagi #018212)
Internet connectivity in rental apartments is affected by many factors including the type of connection, speed, and Wi-Fi router placement. This guide provides detailed explanations of how to identify the causes and implement solutions for common issues like poor connection and stuttering videos.
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Internet connectivity at rental properties is a critical factor to verify before moving. This guide provides expert rental advice on the characteristics, costs, and construction considerations for each option—from built-in Wi-Fi to fiber-optic lines and home routers.
Rental apartments have two main types of internet setups: "building-provided" and "individual contract." Since options vary greatly depending on the property, it's essential to confirm before moving in.
In apartment buildings and large complexes, building-provided internet is becoming more common, where owners install fiber-optic lines building-wide and distribute them to each unit (VDSL or fiber-to-the-room methods).
Advantages
Disadvantages
Property listings often advertise "free internet" or "fiber optic included" for this type.
If your building has no internet setup or you're unhappy with the speed, you'll need to get an individual contract.
Speed: Up to 1Gbps (typical real-world speeds 300–600Mbps) Monthly: ¥4,000–6,000 (including ISP) Installation: Requires visit (1–2 weeks for activation)
For rental apartments, you need approval from the management company. Usually a single form suffices, but some owners may refuse. A common condition is using non-invasive methods (such as routing through air-conditioning ducts).
Speed: Up to 300Mbps (typical real-world speeds 50–200Mbps) Monthly: ¥3,500–5,000 Installation: None required (just plug into an outlet)
Typical options include Docomo home5G, au HOME 5G, and Softbank Air. The biggest advantage is no installation and same-day activation. However, speed can vary depending on signal strength.
Speed: Up to 200Mbps (typical real-world speeds 30–100Mbps) Monthly: ¥3,000–5,500 Installation: None required
While portable, it's not suitable for heavy data use. If you work from home frequently, you may experience insufficient speed and data limits.
If you need individual fiber-optic installation, follow these steps:
Note: Removal is often unnecessary upon move-out, but confirm the handling of the ONT (optical network terminal) in advance.
If you're experiencing slow internet, check the following first:
| Cause | Solution |
|---|---|
| Poor router placement | Place in room center, away from obstacles, at a higher position |
| Using 2.4GHz band | Switch to 5GHz band (Wi-Fi 5/6) |
| Old router | Replace with Wi-Fi 6 router (¥6,000–15,000) |
| Time of day | Speeds drop 8 PM–11 PM due to shared line congestion |
| ISP issue | Check with speed test tool, consider switching providers |
Living alone (casual video streaming and social media) → Building-provided or home router is sufficient. For best value, use the building's free Wi-Fi if available.
Working from home with frequent video meetings → Individual fiber-optic is best. Home routers can be unstable, risking connection drops during important meetings.
Temporary assignment or frequent moves → Home routers are easier for moves (simpler cancellation and re-signup than fiber).
The key to choosing rental internet is to follow this order: check the building's equipment, clarify your speed needs, then determine if installation is required. If you skip management company approval before moving in, you'll regret it when you find you can't get fiber. Always ask about internet equipment and whether individual installation is allowed during your apartment viewing.
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