Construction cost estimation information

City of Yokohama, Housing and Architecture Bureau has formulated procedures for calculating costs for construction other than housing construction, referring to the Ministry of Land, Infrastructure, Transport and Tourism's Ministry of Land, Infrastructure, Transport and Tourism's "Standard for Estimation of Public Building Construction Costs". In addition, Yokohama City uses a repair estimation system (RIBC2) to estimate construction costs.

（１） Regular revision
　Prices published in price materials (material unit price and market unit price) and combined unit prices based on common steps across the country are periodically reported. ※It will be revised.
　※In principle, four times a year (April, July, October, January)

（２） Extraordinary revision
　Unit price of principal materials ※For the time being, it will be revised every month.
　※The unit price of main materials is the unit price of materials set by Yokohama City from reinforcing bars, concrete, steel frames, steel scraps, and steel scrap.
　It depends on "monthly construction prices" and "Monthly published estimation data" commercially available by the Price Investigation Committee and the (One Goods) Economic Research Committee.
　A list of major materials can be viewed at the Citizen Information Center.

（３） Cost of materials
　The unit price of materials is calculated at the prices of monthly published construction prices and monthly publications, which are commercially available by the Construction Price Research Committee and the Economic Research Committee.
　It's better.
　The unit price of materials set based on the actual trading price of the market can be viewed at the Market Information Center.
　Yes. It is published in monthly construction prices and monthly publications, etc., which are commercially available by the Construction Price Survey Committee and the Economic Research Committee.
　Prices are not included.

（４） Market price
　Market unit price is calculated at the prices of "building cost information" and "building construction unit price" commercially available by the Construction Price Research Committee and the Economic Research Committee.
　It's better.

（５） Labor unit price
　The labor unit price depends on the public construction design labor unit price set in Yokohama City.
　For the labor unit price, please refer to the public construction design labor unit price table on the Motoichi Road and Highway Bureau homepage "Civil engineering design and construction-related materials".

The following calculation guidelines and estimation manual are published in PDF files.

※The May 2022 edition is listed below.
・Estimation guidelines (Building work (PDF: 964KB) Electrical equipment construction (PDF: 450KB) Machinery and equipment construction (PDF: 1,537KB))

The maintenance estimation system is a system that uses a personal computer to estimate the construction cost of public buildings. This system has been developed by the Institute of Building Cost Management System, and is currently introduced by many local governments, including the government, and can be used by design offices and construction companies. . However, among the accumulated data such as material unit price and walks, data that has not been published by the national or local government must be prepared independently.
Yokohama City uses this system to estimate construction costs. Specifically, please refer to homepage (outside site) of Building Cost Management System Research Institute.

About construction design book which we can download from doorbira (outside site) of Yokohama, bid, we do only PDF file to the whole city handling after June 1, 2013. Software such as Adobe Acrobat is required separately when converting to Excel etc.

About estimate breakdown of construction work, from October 5, 2021, we announce in "bid, contract result details (construction)" of Motoichi homepage "Yokohama, bid door" from item performing public notice and nomination notice newly We announce. [It is three months from the day after the contract decision date. ]