Lumber

AI Powered Construction Payroll and Workforce Management Software

San Jose, United States · Founded 2023 · $21.0M raised

Employees
51–200
Founded
2023
Business Model
B2B
Total Funding
$21.0M
Last Round
$15.5M Series AJun 2025
Rounds
2

About

AI-powered construction workforce management platform streamlining payroll, time tracking, safety, compliance, and field productivity.

Summary

Lumber is an Artificial Intelligence company based in San Jose, United States, founded in 2023. It has raised $21.0M in total across 2 rounds, most recently a $15.5M Series A round in Jun 2025. Investors include Foundation Capital, Tishman Speyer and Carbide Ventures.

Tech & App Stack

6 technologies & apps tracked

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Funding History

Series ASeries AJun 2025
$15.5M

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Full funding history, per-round amounts, and investor participation.

Investors

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