Concerns are growing about a possible over-heating in the property market around Musashikosugi Station in Kawasaki City as the area experiences a construction boom.

According to the latest ‘koji-chika’ assessed land values as of January 1, 2013, commercial land values in Kosugimachi increased 9.9% over the year while residential land values in the same area increased by 9.1%, making it the best performing area in Kanagawa Prefecture.

The average price of new condominiums is also rising. Two areas in greater Tokyo that are seeing a construction boom are Musashikosugi and the Tokyo bayside area which includes the manmade islands of Toyosu, Kachidoki and Tsukishima. Both Musashikosugi and the bayside locations were previously home to electronics factories, but an urban regeneration has seen factories torn down to make way for high-rise condominiums.

The bayside area in Chuo and Koto-ku is closer to central Tokyo than Musashikosugi, yet the average price of a new apartment in Musashikosugi in 2011 was higher than those in Toyosu. The price difference has spread further, with the average price of a new apartment in Musashikosugi reaching 794,000 Yen/sqm in 2013, while prices in Toyosu were 648,000 Yen/sqm. Apartments on high floors have been reaching prices of 970,000 Yen/sqm, which is as much as an apartment in central Tokyo.

Since the beginning of the construction boom in Musashikosugi in 2007, the apartment supply has increased by 4600. A further 4100 apartments are currently in the pipeline. There are currently 11 apartment buildings around the Musashikosugi Station that are over 100 meters tall.

Why is Musashikosugi so popular?

The station offers convenient access to most major centres in greater Tokyo, while the area around the station itself has improved greatly.

JR Nambu Line, Yokosuka Line, Shonan-Shinjuku Line, Tokyu Toyoko Line and the Tokyu Meguro Line all stop at Musashikosugi Station. This allows commuters to easily travel to major hubs and terminal stations. Direct trains can be taken to Shibuya, Shinagawa, Shinjuku, Tokyo, Kawasaki and Yokohama Stations – all in less than 20 minutes. This is the only place in greater Tokyo that offers direct lines to so many major stations.

The Toyoku Line stops along many popular residential areas such as Jiyugaoka and Denenchofu, and stations which are close to desirable schools and universities.


Local government and local residents have been very supportive of re-development in this area. As factories began to move-out in the early 2000s, a large amount of land was available for development.

At the request of Kawasaki City, JR East created a stop for the Yokosuka Line at Musashikosugi Station in 2010. The City contributed 80% of the 22.6 billion Yen construction costs.

Several organisations have since been created to promote a community and encourage cooperation between older residents and new high-rise residents. The 3rd annual Kosugi Festa will be held in October this year.

Growing pains

Not all locals are happy with their new high-rise neighbours. In February, a petition containing 40,000 signatures opposing the planned construction of two 180m tall apartment towers was submitted to the Kawasaki City Office. The main complaints were about shadows and loss of sunlight to be caused by the towers and concerns that the high buildings could cause strong eddies of wind. Despite the opposition, the two towers are going ahead as planned.

There are also fears that the rapid construction of new apartments may cause a crash in the prices of second-hand apartments. If there is a sudden increase in the supply of new apartments in an area, there will also be a constant stream of second-hand apartments hitting the market, which can push down resale prices.

When there is a surge in construction, available re-development sites can quickly run out. Any further development comes to a screeching halt and the popularity of an area can decline almost instantaneously.

One example is Shimomaruko, located 2km to the east of Musashikosugi in Ota-ku, Tokyo. In the early 2000s, the area saw a construction boom in large-scale condominiums, but available land quickly ran out and the boom was over. Nowadays, the popularity of the area has dropped so much that Shimomaruko is rarely heard of as a desirable residential district. Unlike Musashikosugi, apartment prices in Shimomaruko never spiked to high levels and have remained at stable levels over the past decade. However, should popularity wane in Musashikosugi, there may be some buyers who will be left out of pocket.

Successful redevelopment of an area is an on-going project that requires careful planning and a long outlook. Whether the redevelopment in Musashikosugi can be sustained or not remains to be seen, but it won’t be without its own set of challenges.

New and recently built high-rise apartments in Musashikosugi:

The Kosugi Tower

  • Completion: 2008
  • 49 storey
  • 689 apartments
  • Average price: 790,000 Yen/sqm

Park City Musashikosugi Station Forest Tower

  • Completion: 2008
  • 48 storey
  • 643 apartments
  • Average price: 800,000 Yen/sqm

Park City Musashikosugi Mid Sky Tower

  • Completion: 2008
  • 61 storey
  • 794 apartments
  • Average price: 810,000 Yen/sqm
Park City Musashikosugi Mid Sky Tower (left) and Station Forest Tower (right)

Exlus Tower Musashikosugi

  • Completion: March 2013
  • 39 storey
  • 326 apartments
  • Average price: 860,000 Yen/sqm

Proud Tower Musashikosugi

  • Completion: January 2015
  • 45 storey
  • 450 apartments
  • Average price: 813,000 Yen/sqm

City Tower Musashikosugi

  • Completion: January 2016
  • 53 storey
  • 800 apartments
  • Price TBA

Source: Shukan Diamond, June 6, 2013.