Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.21.2
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2021
Aug. 17, 2021
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2021  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q2  
Entity Registrant Name BUILD ACQUISITION CORP.  
Entity Central Index Key 0001838666  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Interactive Data Current Yes  
Entity Current Reporting Status Yes  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Small Business true  
Entity Shell Company true  
Entity Incorporation, State or Country Code DE  
Entity File Number 001-40220  
Entity Tax Identification Number 86-1389419  
Entity Address, Address Line One 3500 Jefferson Street  
Entity Address, Address Line Two Suite 303  
Entity Address, City or Town Austin  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 78731  
City Area Code 512  
Local Phone Number 994-2983  
Document Quarterly Report true  
Document Transition Report false  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   20,000,000
Security 12b Title Class A common stock, par value $0.0001 per share  
Trading Symbol BGSX  
Security Exchange Name NYSE  
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   5,000,000
Units    
Document Information [Line Items]    
Security 12b Title Units, each consisting of one share of Class A common stock and one-third of one redeemable warrant  
Trading Symbol BGSX.U  
Security Exchange Name NYSE  
Redeemable Warrants    
Document Information [Line Items]    
Security 12b Title Redeemable warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50  
Trading Symbol BGSX WS  
Security Exchange Name NYSE