1build

Freemium Win & Set Up the Work

Live construction cost database with 68M priced items across every US county; estimating and digital takeoff platform for residential contractors.

Also in Companies -- Strategic (Nemetschek Group, Masco Corporation, Initialized Capital, Afore Capital, Y Combinator, Greycroft)

3.2 /5 composite score

C2 5/5 reflects the public GraphQL API with API-key auth, and the file surface covers JSON and CSV. The estimating placement is a county-level cost-data and digital-takeoff workflow for residential contractors; firm-size fit is solo to small-team.

Solid

Rubric Scorecard

How we grade →

Criterion	Score	Evidence
Value for the price	2/5	Freemium, free tier Source →
Agent Friendliness	5/5	API: https://developer.1build.com/ Source →
Ease of adoption	3/5	--
Portability & lock-in	3/5	2 file formats Source →
Interoperability	3/5	3 integrations

Pricing

ModelFreemium

Free tieryes

Visit 1build →

How we verified this: we checked 1build against its live site and an independent source — forconstructionpros.com. Nothing on this page is listed from memory. See how we grade. Verified 2026-07-18.

Evidence

File formats

Format	Direction	Support
JSON	unknown	unknown
CSV	unknown	unknown

Integrations

STACK Construction Buildxact CostCertified

Sources

Pricing API docs Formats

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