Cover - USD ($)	12 Months Ended
	Jun. 30, 2025	Sep. 17, 2025	Dec. 31, 2024
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2025
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2025
Current Fiscal Year End Date	--06-30
Entity File Number	000-56214
Entity Registrant Name	GenFlat Holdings, Inc.
Entity Central Index Key	0001796949
Entity Tax Identification Number	84-3639946
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	1983 N Berra Blvd
Entity Address, City or Town	Tooele
Entity Address, State or Province	UT
Entity Address, Postal Zip Code	84074
City Area Code	435
Local Phone Number	830-6979
Title of 12(g) Security	Common Stock, Par Value $0.001
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Entity Shell Company	false
Entity Public Float			$ 91,449,650
Entity Common Stock, Shares Outstanding		10,781,902
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Auditor Name	M&K CPAS, PLLC
Auditor Firm ID	2738
Auditor Location	The Woodlands, TX