What Lumber does

Lumber (legal entity LumberFi Inc.) is an AI-native construction workforce management SaaS company founded in 2023 and headquartered in Palo Alto, California, with 101–250 employees and active hiring across Product, Engineering, Customer Success, Content, and Marketing. The platform serves small and mid-sized construction contractors with an integrated suite covering payroll, certified payroll, prevailing-wage compliance, union reporting, time tracking, HR/onboarding, scheduling, field productivity, and safety, plus a managed-services layer (LumberCare) for white-glove compliance, accounting, and contract-compliance consulting. Its core technology architecture layers a suite of vertical-specific AI agents — Union Agent, Prevailing Wage/CPR Agent, Paper Timecard Agent, Funding Agent, plus supporting Timesheet Reviewer, Payroll Anomaly Detector, Compliance Assist, Resource Allocator/SmartPlanner — on top of a domain-specific Legal Language Model and bi-directional integrations with 20+ construction ERP, payroll, and HR systems including Acumatica, Trimble Viewpoint Vista & Spectrum, Sage (Intacct/100 Contractor/300 CRE), Oracle NetSuite, Premier Construction Software, Knowify, and Blu Banyan SolarSuccess. AI modalities span NLP (CBA interpretation), computer vision/OCR (paper timecards), anomaly detection, predictive resource forecasting, optimization, process automation, and autonomous agents that combine structured payroll data with regulatory knowledge to surface federal incentive funding.

Lumber monetizes via quote-based SaaS subscriptions sold per Service Order Form across module bundles (Payroll, HR Management, Productivity, AI Agents), with annual and multi-year subscription terms and a 60-day cancellation notice; professional services revenue comes from LumberCare managed services; and resale revenue flows through ERP channel partners such as Acumatica and the Trimble Marketplace. Go-to-market is sales-led (direct + inside sales), supplemented by an indirect channel layer that includes ERP marketplaces, the Apple App Store and Google Play for the Lumber Timesheet mobile app, the Do It Best eCommerce offering, and authorized resellers. Customer segments are exclusively SMB and mid-market construction firms — drywall, solar, framing, terrazzo, general contracting — including named references Prodigal Building Systems, OnTap Trade, DAAXIT, Arpin Associates LLC, and Level 5 Drywall Inc., with reported outcomes of up to 95% payroll processing time reduction, ~15% labor cost savings, and 70% reduction in HR inquiries. The company has expanded from the U.S. into Canada via a December 2025 launch, and operates acquired brands BuilderFax (digital credentialing, May 2025) and Pivla (prevailing-wage/tax-credit AI, May 2026).

Lumber has raised $22.5M in venture capital across two rounds — a $5.5M seed in September 2023 led by Carbide Ventures and a $15.5M Series A in March 2025 led by Foundation Capital with participation from Tishman Speyer, 8VC, Sure Ventures, and FirsthandVC — and is recognized in the construction-tech ecosystem as Acumatica's Alliance Partner of the Year and a Presidents Club member (Acumatica Summit 2026). The company is positioned against a $2.1T U.S. construction sector facing a projected 499,000-worker shortage by 2026, over $500B in federal funding flowing through Davis-Bacon/prevailing-wage-regulated projects, and a $12B credential-management problem it is targeting through the BuilderFax and NCCER partnership.

Name

Lumber

Legal name

LumberFi Inc.

Website

https://lumberfi.com

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

251–500 employees

Short description

Lumber (LumberFi Inc.) is an AI-native construction workforce management SaaS platform serving small and mid-sized U.S. and Canadian contractors with payroll, certified payroll, prevailing-wage compliance, time tracking, HR, scheduling, and field productivity, layered on integrations with 20+ construction ERPs and a suite of vertical-specific AI agents.

Ownership category

akta.pro rank

Headquarters

HQ city

San Jose

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations

Revenue model

1. SaaS subscription (Lumber Platform): Primary recurring revenue from subscription plans (Service Plans) covering Payroll, HR Management, Productivity modules and AI Agents, billed per Service Order Form on monthly/annual/multi-year Subscription Terms. Includes free trial conversion path.
2. Professional services (LumberCare): Recurring/managed-services revenue from LumberCare, offering Prevailing Wage Compliance, Accounting/Bookkeeping, and Contract Compliance consulting delivered by US-based experts.
3. Channel/Marketplace resale: Resale and marketplace revenue from listings on Trimble Marketplace (Vista/Spectrum) and through channel partners such as Acumatica, with Channel Partners collecting end-customer fees under separate agreements.

Pricing tiers

Go-to-market motion1 record

Distribution channels8 records

Marketing channels7 records

Core offering

Lumber is an AI-first, 360-degree construction workforce management SaaS platform that unifies Payroll, HR Management, and Productivity modules with a suite of purpose-built AI Agents (Union Agent, Prevailing Wage/CPR Agent, Paper Timecard Agent, Funding Agent) and the BuilderFax digital credential wallet. It is sold primarily to U.S. and Canadian small-and-mid-sized construction contractors, integrating with 20+ construction ERP, payroll and HR systems to automate certified payroll, prevailing wage and union compliance, geo-fenced time tracking, scheduling, and matching of contractors to federal incentive programs. The product is delivered via web and iOS/Android mobile apps and complemented by the LumberCare managed-services offering.

Product overview

Lumber is an AI-first, 360° construction workforce management platform structured as a unified core platform with three primary modules (Payroll, HR Management, and Productivity) plus a suite of specialized AI Agents (Union Agent, Prevailing Wage Agent, Paper Timecard Agent, Funding Agent) layered on top. The platform also includes the acquired BuilderFax digital credential management brand, the LumberCare customer success service, and standalone free AI tools (Certified Payroll AI Audit and Union CBA AI Analysis). The Payroll module handles certified payroll, prevailing wages, union reporting, and tax filing with up to 95% processing time reduction; HR Management covers recruiting, onboarding, benefits, and credentials; Productivity handles time tracking, scheduling, equipment, job costing, safety, and recognition. AI capabilities like Timesheet Reviewer, Payroll Anomaly Detector, Compliance Assist, Resource Allocator, Resource Forecasting, and SmartPlanner automate back-office and field operations for SMB construction contractors.

Differentiator

Problem solved

Functional benefit

Brands

• BuilderFax: Digital credential management platform for construction craft workers, providing a mobile wallet for storing and sharing trade credentials such as NCCER certifications. Acquired by Lumber in May 2025 and operated as a powered-by-Lumber sub-brand.
• LumberCare
• LumberAI

Products and services

• Lumber Platform AI-first, all-in-one construction workforce management platform that streamlines payroll, time tracking, safety, compliance, field productivity, rewards, and recognition for building contractors in the U.S. and Canada.
• Lumber Payroll Construction payroll module that handles certified payroll, prevailing wages, union reporting, overtime, tax filing, 401k integration, expense management, and payroll cards for U.S. and Canadian contractors.
• Lumber HR Management HR and recruitment module for construction teams covering Applicant Tracking System, onboarding, benefits administration, credential management, and referral programs.
• Lumber Productivity Field productivity module providing real-time visibility into workforce, tasks, expenses, equipment, and safety, including Time Tracking, Schedule & Dispatch, Equipment Tracking, Productivity Tracking, Job Costing, Safety Management, Form Builder, and Recognition & Award.
• Lumber AI Agents Suite of specialized AI-powered agents for construction workforce management, including Union Agent, Prevailing Wage (CPR) Agent, Paper Timecard Agent, and Funding Agent, marketed as 'agentic compliance' for automating payroll and back-office workflows.
• Union Agent AI agent that turns complex Collective Bargaining Agreements, rate sheets, and addendums into validated, audit-ready union rates and answers union contract questions via a chat interface.
• Prevailing Wage Agent (CPR Agent) Certified Payroll Reporting (CPR) Agent that sits on top of the ERP, scanning certified payroll reports for prevailing wage risks and errors and auto-generating WH-347 reports before submission.
• Paper Timecard Agent AI agent that uses computer vision to snap, scan, and convert paper timecards into accurate digital payroll data in seconds, eliminating manual paper-based payroll entry.
• Funding Agent AI agent that tracks crew work in real time and automatically matches it to federal tax credits and incentive programs (IRA, IIJA, CHIPS Act, Davis-Bacon, federal AI Action Plan) tied to prevailing wage and apprenticeship compliance.
• BuilderFax Digital credential management platform for construction craft workers, providing a mobile wallet for storing and sharing NCCER credentials and other trade certifications via instant QR-code sharing; operated as a powered-by-Lumber sub-brand.
• LumberCare Tailored expert customer success and support service offering white-glove concierge service, U.S.-based experts, personalized onboarding and training, prevailing wage compliance support, accounting services, and contract compliance consulting.
• Certified Payroll AI Audit (Free AI Audit Tool) Free AI-powered tool that scans certified payroll reports for any compliance issues before submission, helping contractors identify prevailing wage risks and errors.
• Union CBA AI Analysis AI-powered tool that analyzes construction union Collective Bargaining Agreements to surface rate, classification, and compliance information for contractors.
• Lumber Canada Canadian-market edition of the Lumber platform with localized payroll, HR and field productivity adapted to federal and provincial labor laws, including T4s, ROEs, CPP/CPP2, and remittances, integrated with Canadian construction accounting systems.

Quantifiable outcome

• Up to 95% reduction in payroll processing time (Lumber's claim across payroll module)
• +4 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

AI capability13 records

Feature10 records

Partnerships

Nine partnerships are on record, tiered flagship partner, minor partner and core partner.

• Trimble (Trimble Marketplace — Vista & Spectrum)flagship partnerTechnology or Integration · 2 June 2026Officially listed on the Trimble Marketplace as an integration partner for Trimble Viewpoint Vista and Spectrum. Enables bi-directional sync of field time, payroll and labor-cost data into the contractor's ERP financial system via Trimble App Xchange, eliminating duplicate data entry and improving payroll accuracy, job costing, and workforce reporting.
• Pivlaflagship partnerStrategic or Co-development Partner · 27 May 2026Acquired by Lumber (May 27, 2026), bringing Pivla's prevailing wage compliance, tax credit optimization, and regulatory automation capabilities. Powers Lumber's new "Funding Agent" that analyzes payroll and workforce data to match contractors with federal and state incentive programs tied to Davis-Bacon and apprenticeship requirements (IRA, IIJA, CHIPS Act).
• National Center for Construction Education and Research (NCCER)flagship partnerStrategic or Co-development Partner · 3 February 2026BuilderFax (powered by Lumber) became NCCER's official credential management platform. Construction workers digitally store and share NCCER credentials via a mobile wallet with instant QR code sharing; integrates NCCER career pathways with hiring, compliance, and workforce analytics.
• Acumaticaflagship partnerStrategic or Co-development Partner · 27 January 2026Named Acumatica's Alliance Partner of the Year and inducted into the Presidents Club at Acumatica Summit 2026 in Seattle. Lumber integrates with Acumatica Cloud ERP to deliver AI-powered automation for construction payroll, HR, certified payroll, and compliance; generated the highest number of new customer acquisition opportunities for Acumatica in 2025.
• CIRminor partnerStrategic or Co-development Partner · 12 November 2025Lumber and CIR partnered to transform construction workforce planning and labor risk management: Lumber contributes AI-driven workforce management and digital credentialing; CIR contributes labor risk analytics and workforce development tools.
• Knowifycore partnerTechnology or Integration · 28 August 2025Integration delivering an end-to-end workflow for prevailing wage compliance and certified payroll (WH-347). Unifies Knowify's project financials with Lumber's labor tracking and payroll; targets small and mid-sized trade contractors seeking enterprise-grade compliance tools for government-funded projects.
• BuilderFaxflagship partnerStrategic or Co-development Partner · 1 May 2025Acquired by Lumber (May 1, 2025) to combine BuilderFax's digital credential wallet with Lumber's AI-powered workforce suite, addressing a $12 billion credential management problem and providing craft workers with free digital tools to track and share NCCER certifications.
• Premier Construction Softwarecore partnerStrategic or Co-development Partner · 15 October 2024Strategic partnership integrating Premier's AI-powered cloud ERP for construction with Lumber's payroll and workforce management. Targets construction companies across North America to unify payroll, HR, and real-time labor data and improve job costing accuracy. Premier Construction Software is a Markham, Ontario-based subsidiary of Constellation Software Inc.
• Do It Bestminor partnerChannel Partner/ Reseller/ Distributor · 2 September 2024Do It Best added Lumber to its eCommerce offering (September 2, 2024), extending Lumber's reach into Do It Best's network of independent hardware/building-supply contractors.

Scale indicators13 records

Recent moves1 record

Expansion highlights8 records

Direct peers

• Foundation Software: Long-standing construction-specific payroll, HR, and accounting platform serving commercial and specialty trade contractors. Closest direct competitor to Lumber on construction-only payroll and prevailing wage/certified payroll, targeting the same SMB-to-mid-market contractor base.
• ComputerEase: Construction accounting and payroll software (now part of Deltek) serving contractors with job costing, payroll, and project accounting. A direct peer on construction-only payroll and project-cost integration for small/mid-market contractors.
• Workyard: Construction workforce management platform focused on time tracking, geofencing, and job costing for specialty contractors and field services. Closest direct competitor on geo-fenced time tracking and mobile-first construction workforce workflows.
• Raken: Mobile field-operations platform for construction crews, offering daily reporting, time tracking, and productivity tools. Direct peer on construction field productivity and crew time capture with mobile-first UX.
• Knowify: Construction accounting and project management platform with payroll, job costing, and certified payroll/prevailing wage modules. Direct peer on construction-specific payroll; notably, Knowify is also a Lumber integration partner (Aug 2025), making it both competitor and collaborator.

Broad incumbents

• Procore Technologies: Public construction management platform spanning project management, financial management, and workforce. Competes as a broad incumbent that can natively extend into workforce management, certified payroll, and field time tracking — threatening Lumber's wedge into the same contractor customer base.
• Gusto: Leading horizontal SMB payroll, HR, and benefits platform that increasingly targets construction and field-services verticals. Represents the most likely horizontal incumbent to undercut Lumber on price and add union/prevailing wage features over time.
• ADP: Largest US payroll and HR services provider with construction-industry offerings (RUN, Workforce Now, Vantage) and a long-standing presence in certified payroll. Broad incumbent that could absorb Lumber's differentiation through scale, distribution, and enterprise sales reach.

Emerging players

• JobTread: Construction project management and estimating platform with built-in payroll, job costing, and customer management. Emerging player targeting small/mid-market builders with an all-in-one approach similar in scope to Lumber's unified platform.
• Buildertrend: Construction project management platform for residential builders and remodelers, including scheduling, customer management, and financial tools. Comparable on serving SMB contractors with an integrated software suite, though more residential/remodel focused.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/groups/6508644522524665
• LinkedInlinkedin.com/groups/14305701

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries3 records

Funding overview

Funding rounds2 records

Investors8 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A2 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Lumber