🌸 Basic Information
Line Name: Seibu Haijima Line
Operator: Seibu Railway Co., Ltd.
Section: Kodaira Station – Haijima Station (14.3 km)
Stations: 9 (Kodaira / Hagiyama / Ogawa / Higashiyamatoshi / Tamagawajosui / Musashi-Sunagawa / Seibu-Tachikawa / Haijima)
Opened: 1940 (official service)
Connections: Kodaira (Seibu Shinjuku Line), Haijima (JR Ōme Line, Itsukaichi Line, Hachikō Line)
Feature: A semi-main suburban line crossing northern Tama, popular among families and commuters
📜 History & Background
Originally built in the late 1930s for military transport, the Seibu Haijima Line officially opened in 1940.
After WWII, it grew alongside suburban housing development in western Tokyo, evolving into a commuter line serving new residential areas.
Today, it plays an important role linking the Seibu Shinjuku Line with the Haijima area (Tachikawa–Akishima region).
🚉 Main Stations & Highlights
Kodaira Station: Connection to the Seibu Shinjuku Line / Excellent transport hub with strong bus access
Higashiyamatoshi Station: Within walking distance of the Tama Monorail (Kamikitadai) / Close to the city center and shops
Tamagawajosui Station: Surrounded by greenery / Monorail connection to Tachikawa and Tama Center
Haijima Station: Key terminal / Direct JR access to Ōme, Hachiōji, and Akishima areas
🌟 Advantages
✅ 1. Dual Access – City & Suburbs
Transfer at Kodaira for Seibu Shinjuku Line to central Tokyo, or at Haijima for JR lines toward western Tokyo.
Convenient for commuting, studying, and weekend outings alike.
✅ 2. Calm & Green Residential Environment
Plenty of greenery, riverside paths, and parks along the route — perfect for relaxed suburban living away from the city noise.
✅ 3. Reasonable Property Prices
Areas like Higashiyamatoshi, Tamagawajosui, and Musashi-Sunagawa are known for good cost-performance housing and rent levels.
✅ 4. Monorail Connectivity Expands Mobility
The Tama Monorail connection from Higashiyamatoshi or Tamagawajosui enables smooth travel to Tachikawa and Tama Center areas.
⚠️ Disadvantages
❌ 1. No Direct Train to Central Tokyo
Transfers at Seibu Shinjuku or JR lines are necessary to reach Shinjuku or Tokyo stations.
❌ 2. Limited Train Frequency Off-Peak
During midday and late evening, trains may run about every 20 minutes from Haijima.
❌ 3. Uneven Commercial Development
Many stations are primarily residential, with limited retail or dining options nearby.
For major shopping, residents often head to Tachikawa, Tokorozawa, or Kokubunji.
🧺 Living Comfort & Convenience
Transport: ★★★☆☆ / Transfers needed, but wide access to both central and western Tokyo
Nature & Parks: ★★★★★ / Rich greenery including Tamagawajosui and Tachikawa Disaster Prevention Park
Shopping: ★★★☆☆ / Local supermarkets nearby; major malls in Tachikawa
Education & Family Life: ★★★★☆ / Plenty of schools and childcare facilities
Safety: ★★★★★ / Quiet neighborhoods with low crime rates
🏠 Real Estate Perspective
💴 Rent Market (2025 estimates)
Kodaira: 1R–1K ¥65,000–80,000 / Family 2LDK+ ¥110,000–140,000 — Convenient and popular
Higashiyamatoshi: 1R–1K ¥60,000–70,000 / Family 2LDK+ ¥100,000–130,000 — Growing demand via Monorail access
Tamagawajosui: 1R–1K ¥60,000–70,000 / Family 2LDK+ ¥100,000–130,000 — Green, family-friendly area
Haijima: 1R–1K ¥60,000–70,000 / Family 2LDK+ ¥90,000–120,000 — JR access and affordable rent
🏘 Housing Trends
Predominantly low-rise houses and small apartments around stations.
Even within walking distance, rents remain moderate — excellent value for money.
Plenty of 3LDK and renovated used condos, appealing to family residents.
🎯 Recommended For
✅ Those seeking quiet, nature-rich neighborhoods
✅ Families wanting to balance affordable rent and city access
✅ Parents who value nearby schools, hospitals, and parks
✅ Commuters needing good access to Tama or Ōme Line areas
📌 Summary
The Seibu Haijima Line serves as a bridge between central Tokyo and its western suburbs,
offering an ideal balance of nature, education, and comfortable residential living.
With reasonable rent, strong safety, and calm surroundings,
it’s becoming a rediscovered “hidden gem” line for those seeking a suburban lifestyle with urban convenience. 🌿