XML 18 R1.htm IDEA: XBRL DOCUMENT v3.25.1
Cover Page
 12 Months Ended
Dec. 31, 2024
Document Information [Line Items]  
Document Type S-1
Amendment Flag false
Entity Registrant Name Tectonic Therapeutic, Inc.
Entity Central Index Key 0001681087
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company false
Entity Small Business true
Entity Tax Identification Number 81-0710585
Entity Address, Address Line One 490 Arsenal Way
Entity Address, Address Line Two Suite 210
Entity Address, City or Town Watertown
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02472
City Area Code 339
Local Phone Number 666-3320
Entity Incorporation, State or Country Code DE
Entity Primary SIC Number 2836
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Address Line One 490 Arsenal Way
Entity Address, Address Line Two Suite 210
Entity Address, City or Town Watertown
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02472
City Area Code 339
Local Phone Number 666-3320
Contact Personnel Name Daniel Lochner