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  4. Internet Connection Speed Verification and Improvement in Rental Properties — Complete Guide to Setting Up Your Wi-Fi Environment
Daily Life

Internet Connection Speed Verification and Improvement in Rental Properties — Complete Guide to Setting Up Your Wi-Fi Environment

2026-05-08

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.

Internet Connection Speed Verification and Improvement in Rental Properties — Complete Guide to Setting Up Your Wi-Fi Environment
#Internet#Wi-Fi#Fiber Internet#Internet Speed#Home Router
森

Reviewed by: Nobuyuki MoriPresident, M-Assets Co., Ltd. / Licensed Real Estate Transaction Specialist (Miyagi #018212)

Table of contents

  1. 01Common Internet Connection Issues in Rental Properties
  2. 02Identifying Your Rental Property's Connection Type
  3. 03How to Check Your Internet Speed
  4. 04Optimizing Wi-Fi Router Placement and Settings
  5. 05Leveraging 5G/LTE Home Routers
  6. 06Summary: Steps to Improve Internet in Your Rental Property

Common Internet Connection Issues in Rental Properties

Internet connectivity in rental apartments presents unique challenges different from single-family homes.

  • •Older buildings may lack adequate internet infrastructure
  • •In multi-unit buildings, internet connections are shared among all residents, making it difficult to achieve high speeds
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Back to columns
  • •Even in properties advertised as having "free internet," actual speeds may fall short of expectations
  • •Wi-Fi router placement and settings may not be optimized
  • The first step toward improvement is to accurately understand your property's current internet environment.

    Identifying Your Rental Property's Connection Type

    Rental properties typically fall into the following internet connection categories:

    Fiber Optic (VDSL Method vs. Fiber-Direct Method)

    Even with fiber optic service, the wiring method used within the building significantly affects speed.

    • •Fiber-Direct Method (LAN wiring): Fiber optic cable runs directly to each unit. Theoretical maximum speed is 1Gbps, offering high-speed connectivity.
    • •VDSL Method: Within the building, units are connected via telephone lines from the MDF (Main Distribution Frame). Theoretical maximum is 100Mbps, which is slower than fiber-direct.

    Free Internet Properties

    The property owner arranges a bulk contract, and residents use the service at no additional cost. However, since bandwidth is shared among all residents, speeds tend to drop during evenings and weekends.

    Unconnected Properties

    For properties without existing internet infrastructure, you will need to arrange your own service provider contract. You can install fiber optic service such as Flet's Hikari or set up a 5G/4G home router.

    How to Check Your Internet Speed

    To understand your current connection speed, perform a speed test.

    Testing Steps

    1. On your computer or smartphone, visit "Fast.com" or "speedtest.net"
    2. Click the "Speed Test" button and view your results
    3. Test multiple times at different times of day—morning, afternoon, and evening—to understand speed variations throughout the day

    Speed Benchmarks

    • •HD video streaming: 10Mbps or higher
    • •4K video streaming: 25Mbps or higher
    • •Video conferencing (Zoom, etc.): 10Mbps or higher (both upload and download)
    • •Online gaming: 30Mbps or higher (low latency is critical)

    If your results fall significantly below these benchmarks, the issue may lie with your connection type, router, or its placement.

    Optimizing Wi-Fi Router Placement and Settings

    Even with a fiber optic contract, poor router placement will prevent you from achieving high speeds.

    Router Placement

    • •Place it near the center of the room (walls and corners have weak signal coverage)
    • •Mount it 1 to 1.5 meters above the floor (signals spread horizontally more effectively)
    • •Avoid placing it near microwaves, cordless phones, or Bluetooth devices (radio interference)
    • •Keep it away from concrete walls and support columns

    Using Both Wi-Fi Frequency Bands Effectively

    Modern routers support both 2.4GHz and 5GHz frequency bands.

    • •2.4GHz band: Penetrates obstacles well but is easily congested, resulting in slower speeds. Better for distant rooms
    • •5GHz band: Offers faster speeds but is more easily blocked by obstacles. Best used near the router

    By switching between SSIDs (Wi-Fi network names) in your device settings, you can choose the optimal band for your situation.

    Updating and Replacing Your Wi-Fi Router

    Routers in use for 5 or more years may not support the latest standards such as Wi-Fi 6. Outdated routers are often the cause of slow speeds, and replacing them can result in a dramatic improvement in perceived performance.

    Leveraging 5G/LTE Home Routers

    For properties where fiber installation is difficult or when you need internet quickly, SIM-based home routers are a convenient option.

    Advantages of Home Routers

    • •No installation needed—service starts the same day
    • •Portable—you can take it with you when you move
    • •In areas with 5G coverage, speeds can rival fiber optic service

    Disadvantages of Home Routers

    • •Monthly data limits may apply
    • •Speeds vary significantly depending on the area and building's signal conditions
    • •May not be suitable for bandwidth-intensive activities (video production, cloud backups, etc.)

    Popular services include SoftBank Air, home 5G (NTT DoCoMo), and WiMAX+5G.

    Summary: Steps to Improve Internet in Your Rental Property

    Here are the steps to improve internet in your rental property:

    1. Identify your current connection type (fiber-direct, VDSL, free shared, etc.)
    2. Run speed tests at different times of day
    3. Review your router's placement, orientation, and settings
    4. Use both 2.4GHz and 5GHz bands appropriately
    5. Consider upgrading old routers to newer models
    6. If fiber is not suitable, consider a 5G home router

    The most effective approach is to verify the internet setup when looking for a property. During property viewings, ask the management company about the "internet connection type and expected speeds."

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