34-story tower with about 930 homes planned in Horikawacho: City issues its review of the environmental assessment plan

A plan is underway to build a 34-story building with apartments and commercial space in Horikawacho, Saiwai Ward. On Oct 23, 2026, Kawasaki City published the "method review report", one step in the environmental assessment process.

34 floors, about 930 homes and shops

The project is called the "Kawasaki City Saiwai Ward Horikawacho Area A Development Plan (tentative name)". The site is at 580-1 and other lots in Horikawacho, Saiwai Ward, and covers about 8,620 m² (about 0.9 ha). It is in a commercial zone.

The developers are these five companies:

• Keikyu Corporation
• Kanden Realty & Development
• Nippon Steel Kowa Real Estate
• Daiwa House Industry, Minami-Kanto Branch
• Mitsubishi Jisho Residence

Item	Plan
Use	Apartments, commercial space
Floors	34 above ground, 1 below
Height	About 118 m (about 121 m at the highest point, including rooftop structures)
Total floor area	About 99,000 m² (homes about 89,500 m², commercial about 2,000 m²)
Homes	About 930
Car and bicycle parking	About 320 cars, about 1,400 bicycles
Construction	FY2027 to FY2033 (planned)

The names of shops and what will go into the commercial space have not been announced.

What is an environmental assessment?

An environmental assessment is a process in which, before a large building is built, the developer studies its effect on the surroundings and daily life, and reflects the opinions of residents and the city in the plan. Kawasaki has its own ordinance for this. The plan is covered because it involves building a high-rise, a housing complex and a large building.

• Method statement: a document by the developer setting out what will be studied and how
• Method review report: the mayor's review of that method statement from the standpoint of protecting the environment. It is sent to the developer
• Preparatory report: a document setting out what the developer actually studied, and its predictions and evaluation of the impact

What was published this time is the second one, the method review report.

From the method document to the city's review

The developers submitted the method statement to the city on Jun 19, 2026. It was put on public view from Jun 29 to Aug 12, and two people sent two written opinions.

On Aug 26, the city asked the Kawasaki City Environmental Impact Assessment Council (a panel of experts) for its view, and received its reply on Oct 14. Based on that, the city prepared the method review report, published it on Oct 23 and sent it to the developers.

The city asked for daycare and pedestrian impacts to be studied

The method review report asks the developers to study the following points in addition to what is in the method statement.

Topic	What the city asked
Greenery	Also consider how planted trees affect the surroundings, the traits of each tree species, and how well they fit in with the area
Local facilities	Consider adding daycare centers, kindergartens and after-school clubs to what is studied for the effect of a larger population
Traffic	Show the main walking routes around the site before choosing where to count pedestrians
Resources	Make not only the building but also the paving of open spaces last longer

About 930 new homes will affect the facilities children use and the flow of people to the station. The study results are to be set out in the next document, the preparatory report.

Opinions can be submitted at the next stage

The announcement of the method review report does not give a period for submitting opinions. The method review report can be read as a PDF on the city's procedure page.

Residents can next submit written opinions when the developers submit the preparatory report and the city puts it on public view. The publication date, viewing period and deadline for opinions have not been announced yet. We will update this article when they are.

Contacts

• About the plan itself: Keikyu Corporation, tel. 045-225-9773
• About the environmental assessment process: Environmental Assessment Division, Environment Bureau, Kawasaki City, tel. 044-200-2156, fax 044-200-3921, email 30kanhyo@city.kawasaki.jp