Start-Up Alley companies: Information is power

Agent ratings, virtual floor plans among offerings

SAN FRANCISCO — Analytic data that rates everything from residential safety to how a Realtor’s expertise extends in a particular neighborhood was a common ingredient in many entrepreneurial Web businesses participating in Start-Up Alley at Real Estate Connect San Francisco.

About 20 young companies got a chance to share their sites and spark interest among agents and industry insiders in a one-on-one setting at Wednesday’s conference.