Cover - USD ($)	12 Months Ended
	Jul. 31, 2023	Oct. 27, 2023	Jan. 31, 2023
Cover [Abstract]
Entity Registrant Name	My City Builders, Inc.
Entity Central Index Key	0001556801
Document Type	10-K
Amendment Flag	false
Entity Voluntary Filers	No
Current Fiscal Year End Date	--07-31
Entity Well Known Seasoned Issuer	No
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Jul. 31, 2023
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Entity Common Stock Shares Outstanding		586,686
Entity Public Float			$ 429,646
Document Annual Report	true
Document Transition Report	false
Document Fin Stmt Error Correction Flag	false
Entity File Number	000-55233
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	27-3816969
Entity Address Address Line 1	100 Biscayne Blvd.
Entity Address Address Line 2	#1611
Entity Address City Or Town	Miami
Entity Address State Or Province	FL
Entity Address Postal Zip Code	33132
City Area Code	786
Icfr Auditor Attestation Flag	false
Auditor Name	KCCW Accountancy Corp
Auditor Firm Id	2851
Local Phone Number	553-4006
Security 12g Title	Common stock, par value $0.001 per share
Entity Interactive Data Current	Yes
Auditor Location	Diamond Bar, California