Reduction system for property tax and city planning tax on houses that underwent energy-saving renovation work

In order to promote energy-saving measures for buildings, certain heat loss prevention renovation work (hereinafter referred to as "energy-saving renovation work") was carried out by March 31, 2026, and energy-saving renovation work was completed. Only those declared to the ward office Tax Division House in charge of the ward where the house is located within three months from the date, the amount of property tax for the following fiscal year following the year when the completion of energy-saving renovation work was completed is reduced.
(Reduction of city planning tax is Motoichi original measure.)
In addition, about house which energy saving repair work was carried out and became authorized long-term excellent house, reduction rate is expanded from one-third to two-thirds.

In order to receive the reduction, attach the documents listed in (2) to (5) below to the tax return and report to the ward office Tax Division House Section in the ward where the house is located within three months after the completion of the renovation work is needed.
(It is also possible to submit a report by mail. Please fill in the remarks column of the declaration form with Phone number that can be contacted during the day. )

We can download report about reduction of property tax, city planning tax to impose on houses such as heat loss prevention repair. (External site)
If you are unable to submit within three months from the date of completion of the energy-saving renovation work, please indicate the reason in the other column.

If you live in the city, you may be able to omit the submission.

One of the following a to d (institutions) can issue this document.
A: An architect belonging to a registered office
B: Designated Confirmation Inspection Organization
C: Registered Housing Performance Evaluation Organization
D: Housing defect liability insurance corporation
Normally, the architect in charge of the construction will issue a certificate, so please contact the contractor for issuance of the certificate.

This is a document issued by City of Yokohama, Housing and Architecture Bureau Building Planning Division.
For information on certified long-term excellent housing and certification notices, please visit the City of Yokohama, Housing and Architecture Bureau Building Planning Division website.

• Property tax reduction system for houses that underwent barrier-free renovation work、Special measures associated with the Great East Japan EarthquakeAnd it cannot be applied in duplicate with the reduction system other than the reduction system pertaining to alternative houses such as earthquakes.
• Property tax and city planning tax on land will not be reduced.
• The reduction under this system can be received only once per house.
• You may be eligible for income tax deductions. For more information, please contact your local office.

You can download the flyer for this reduction system here.

• [Flyer] For those who have performed heat loss prevention repair (energy saving repair) construction (PDF: 597KB)