# I Block

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**I Blocks** (Chinese: I型大廈)[1] are a design of public housing in [Hong Kong](/source/Hong_Kong). It is mainly divided into three variants: Single I, Double I, and Triple I. Only a few estates currently have I blocks as of today. The existing blocks were built between 1981 and 1983.

## Variants

The I block can be divided into three variants: *Single I, Double I, and Triple I*.

## Etymology

The building looks like the letter **I**. There are three wings - two long and one at the middle. It can be modular by connecting another or two more I blocks. This gave birth of Double I and Triple I.

### Naming

Unlike other blocks, Double I blocks are only given one name. Such examples include Mei Fung House in [Mei Lam Estate](/source/Mei_Lam_Estate) and Shek To House in [Shek Wai Kok Estate](/source/Shek_Wai_Kok_Estate).

## History

The first I blocks was completed in 1981, located at [Sun Tin Wai Estate](/source/Sun_Tin_Wai_Estate). (Shing Wai House, Foo Wai House, Yan Wai House, Fung Wai House, Wing Wai House) The first Double I buildings are located at [Shun Tin Estate](/source/Shun_Tin_Estate), completed about the same as shown above. The last I blocks to be built are located at [Chak On Estate](/source/Chak_On_Estate), completed in 1983.

## Overview

Usually, the height of I blocks may vary. (14-21 stories) Only medium and large units are provided inside the block. (32-39 sqm) Therefore, in public housing estates, it is built with [Old Slab](/source/Old_Slab) to balance the size of units.

Due to the I block taking a lot of space and units focusing on only one size, the I block was stopped being built in future projects. Therefore, few currently have I blocks as of today.

- Single I: Single I block contains 27 units per floor.
- Double I: Double I block contains 54 units per floor.
- Triple I: Triple I block contains 81 units per floor.

## List of blocks

The I blocks take up a large amount of space. Therefore, most are found in the new towns of [Sha Tin](/source/Sha_Tin), [Kwun Tong](/source/Kwun_Tong), [Sham Shui Po](/source/Sham_Shui_Po), and [Tsuen Wan](/source/Tsuen_Wan).

District Estate Stories Units per floor Completed Notes Sham Shui Po Chak On Estate 14 27 1983 Last I block in Hong Kong. Lai Kok Estate 14 81（27x3 blocks） 1981 Triple I (given one name) Kwun Tong Kai Yip Estate 14 Shun Tin Estate 21 54（27x2） Double I block (one name) Tsuen Wan Shek Wai Kok Estate 21 54 1982 Sha Tin Mei Lam Estate 1981 First Double I block in Hong Kong. Sun Tin Wai Estate 21×5 27×5 Location of the first I blocks in Hong Kong. Total：12 houses (18 blocks)

## See also

- [Types of public housing estate blocks in Hong Kong](/source/Types_of_public_housing_estate_blocks_in_Hong_Kong)
- [H Block (Hong Kong)](/source/H_Block_(Hong_Kong))

## References

1. ["公務員事務局 - 搜尋政府部門常用辭彙"](https://www.csb.gov.hk/hkgcsb/glossary/glossary_search_tc.php?search_name1=I+block&and_or=and&search_name2=&cat_code%5B%5D=Housing&display_order=t). *www.csb.gov.hk*. Retrieved 2021-08-27.

## External links

- [Single I Floor Plan](https://www.housingauthority.gov.hk/common/pdf/global-elements/estate-locator/standard-block-typical-floor-plans/11-SingleI.pdf)

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Adapted from the Wikipedia article [I Block](https://en.wikipedia.org/wiki/I_Block) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/I_Block?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.