Cover - USD ($)	12 Months Ended
	Dec. 31, 2025	Mar. 31, 2026	Jun. 30, 2025
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	This Amendment No. 1 (“Amendment”) on Form 10-K/A amends the annual report on Form 10-K of JFB Construction Holdings (the “Company”) for the period ended December 31, 2025, as filed with the Securities and Exchange Commission on March 31, 2026 (the “Form 10-K”).This Amendment is an exhibit-only filing solely for the purpose of filing Exhibit 97.1. No revisions are being made to the Company’s financial statements and this Amendment does not reflect events occurring after the filing of the Form 10-K, or modify or update those disclosures that may be affected by subsequent events, and no other changes are being made to any other disclosure contained in the Form 10-K.
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2025
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2025
Current Fiscal Year End Date	--12-31
Entity File Number	001-42538
Entity Registrant Name	JFB CONSTRUCTION HOLDINGS
Entity Central Index Key	0002024306
Entity Tax Identification Number	99-2549040
Entity Incorporation, State or Country Code	NV
Entity Address, Address Line One	1300 S. Dixie Highway
Entity Address, Address Line Two	Suite B
Entity Address, City or Town	Lantana
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33462
City Area Code	(561)
Local Phone Number	582-9840
Title of 12(b) Security	Class A Common Stock,par value $0.0001per share
Trading Symbol	JFB
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	Yes
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			$ 12,440,230
Entity Common Stock, Shares Outstanding		14,207,900
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false