Meet with purpose.
Discover focused founder, builder, investor, and community events.
B4SF · San Francisco
Builders for San Francisco
Events. People. Opportunities.
A community where founders, builders, investors, and operators meet through events—and stay discoverable afterward.
BCevent
B4SF Community Preview — Demo Event
Oct 15, 2026, 6:00 PM · San Francisco
A clearly labeled demo event showing how upcoming B4SF programs, participants, and startups will appear.
View EventWhat B4SF is
A community layer for San Francisco builders.
Startup Pitch Night is one B4SF program. The broader platform supports many event formats and keeps useful connections visible over time.
Know who is building.
Find approved professional profiles and their B4SF participation history.
Continue after the room.
Discover startups, collaborators, and relevant community connections.
Featured people
Builders worth knowing.
ALperson
Avery Lin
Founder building tools for neighborhood collaboration
Civic Signal — Demo Company
- Featured Founder
- Startup Showcase
REperson
Rowan Ellis
Product builder focused on useful AI workflows
Independent — Demo Profile
- Builder
- Speaker
Featured startups
Work taking shape in San Francisco.
Bstartup
CSstartup
Civic Signal
Simple tools for better neighborhood collaboration.
Demo data
- Startup Showcase
- Demo Profile
Event archive
Event value should continue.
Past pages preserve approved recaps, people, startups, and media instead of disappearing after registration closes.
BSevent
Builder Session — Demo Archive
Jun 12, 2026, 6:00 PM · San Francisco
A fictional past-event record demonstrating how recaps and relationships remain useful after an event.
View recap →