Yokohama City Contract Construction Design Change Guidelines

Last updated on April 30, 2024.

We partially revised "Yokohama-shi contract construction design change guidelines" "Yokohama-shi contract construction design change guidelines (building construction)" in April, 2024 including contents change of special rule in procedure of design change.

Download of Design Change Guidelines (April 2024)

Guidelines applied to construction other than construction work

Yokohama-shi contract construction design change guidelines [April, 2024] (PDF: 619KB)

Guidelines applied to construction work

Yokohama-shi contract construction design change guidelines (building construction) [April, 2024] (PDF: 571KB)

Download of Design Change Guidelines (April 2023)

Guidelines applied to construction other than construction work

Yokohama-shi contract construction design change guidelines [April, 2023] (PDF: 613KB)

Guidelines applied to construction work

Yokohama-shi contract construction design change guidelines (building construction) [April, 2023] (PDF: 565KB)

Download of Design Change Guidelines (October 2017)

Guidelines applied to construction other than construction work

Yokohama-shi contract construction design change guidelines [October, 2017] (PDF: 669KB)

Guidelines applied to construction work

Yokohama-shi contract construction design change guidelines (building construction) [October, 2017] (PDF: 621KB)

Reference materials for revision

Reference materials for revision in April 2024

Main revised point of Yokohama-shi contract construction design change guidelines (old and new comparison table) (PDF: 115KB)

Main revised point (new and old comparison table) of Yokohama-shi contract construction design change guidelines (building construction) (PDF: 108KB)

Reference materials for revision in April 2023

About operation of "Yokohama-shi contract construction design change guidelines" [April, 2023] (PDF: 247KB)

Main revised point of Yokohama-shi contract construction design change guidelines (old and new comparison table) (PDF: 161KB)

Main revised point (new and old comparison table) of Yokohama-shi contract construction design change guidelines (building construction) (PDF: 139KB)

Reference materials for the revision in October 2017

Main revised point (new and old comparison table) of Yokohama-shi contract construction design change guidelines and the same (building construction) (PDF: 105KB)

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