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Cover
Feb. 24, 2026
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Feb. 24, 2026
Entity Registrant Name NORTHANN CORP.
Entity Central Index Key 0001923780
Entity Incorporation, State or Country Code NV
Entity File Number 001-41816
Entity Tax Identification Number 88-1513509
Entity Address, Address Line One 2251 Catawba River Rd
Entity Address, City or Town Fort Lawn
Entity Address, State or Province SC
Entity Address, Postal Zip Code 29714
City Area Code 916
Local Phone Number 573 3803
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.001 par value
Trading Symbol NCL
Security Exchange Name NYSEAMER
Entity Emerging Growth Company true
Entity Ex Transition Period false