Handoff
“Can an AI teammate become the operating system — estimating, project management, and embedded finance — for the 600,000 US residential remodeling contractors?”
Founded2019
HQMiami, Florida, United States (hubs in Austin, São Paulo, Buenos Aires)
Total raised$25M+
Latest roundGrowth (post-$5.8M seed)
IndustryVertical SaaS / Construction
The story
Founded 2019 as 1build, a construction pricing data / Universal Catalog API company. Pivoted into an AI estimating and end-to-end business OS for residential remodelers and trade contractors under the Handoff brand. In 2025-2026 the product expanded well beyond estimating into embedded financial workflows — invoicing, online payments (Stripe → Rainforest), consumer financing (Acorn), and QuickBooks sync — pursuing the 'AI teammate that runs a construction company' thesis.
Product timeline
2019
1build, Inc. founded — construction cost data / Universal Catalog API.· founding
2024
Rebrand/launch as Handoff, AI estimator for residential contractors; $5.8M seed announced.· pivot
2025
Launched Digital Invoices and Online Payments via Stripe.· payments
2026
Migrated invoice payments to Rainforest Pay; added QuickBooks Online sync; launched Acorn Finance client financing; released H1 AI takeoff model.· product
The stack
4 layers disclosed in Handoff’s embedded-finance stack
Payments / PSP
Lending
in the full report
Open banking
in the full report
Accounting
in the full report
Accounting gap: minor
5 more providers across 3 layers, with confidence-scored evidence and source URLs, are in the Embedded Finance Index report.