| Cover | Jan. 31, 2023 |
| Cover [Abstract] | |
| Entity Registrant Name | My City Builders, Inc. |
| Entity Central Index Key | 0001556801 |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Current Fiscal Year End Date | --07-31 |
| Entity Emerging Growth Company | false |
| Document Period End Date | Jan. 31, 2023 |
| Entity File Number | 000-55233 |
| Entity Incorporation State Country Code | NV |
| Entity Tax Identification Number | 27-3816969 |
| Entity Address Address Line 1 | 100 |
| Entity Address Address Line 2 | Biscayne Blvd. |
| Entity Address Address Line 3 | 1611 |
| Entity Address City Or Town | Miami |
| Entity Address State Or Province | FL |
| Entity Address Postal Zip Code | 33132 |
| City Area Code | 786 |
| Amendment Description | The Company’s current report on Form 8-K, originally filed with the Securities and Exchange Commission on February 1, 2023 (the “Original 8-K”), included an incorrect document filed under Exhibit 3.1. This amendment to the Original 8-K is being filed to include the correct Exhibit 3.1 filing to the Original 8-K. |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Local Phone Number | 553-4006 |
