The founder of EstimAI Pro used the product he built — running on Anthropic's Claude — to assemble a detailed, line-item estimate for a $4.2M commercial project, submit it against legacy-software competition, and win the contract.
$4.2M
Commercial bid won
Hours
Not days, to assemble
Won
Contract awarded
100%
Built on Claude
A commercial project in New England came up for bid. The scope was significant — multi-million in contract value, mixed scope of work, real competition from established general contractors. The kind of bid where a thin or sloppy estimate gets thrown out in the first round.
Traditional estimating workflows — spreadsheets, takeoff software, three different tools stitched together — would have taken days. And every hour spent assembling the estimate was an hour not spent walking the site, calling suppliers, or pricing risk.
The bid was assembled inside EstimAI Pro using three of the product's six input modes — description, document upload, and AI prompt — all backed by Claude (Sonnet for reasoning, Haiku for lightweight tasks).
Claude turned the scope description into a categorized, line-item estimate covering site work, foundation, framing, mechanicals, finishes, and overhead. The contractor's historical pricing — uploaded as a mix of past Excel estimates and supplier invoices — flowed through the Pricing DNA pipeline so the line items came back priced at this contractor's actual numbers, not a generic regional benchmark.
The internal quality scorer graded the estimate before it ever reached the proposal builder, so issues — missing categories, math drift, unrealistic markups — were caught and corrected in minutes instead of being discovered by the client.
EstimAI Pro is a member of the Claude Partner Network. Claude is the brain of every AI feature in the product. Here's the specific work it did on the $4.2M bid.
Claude reads a plain-English project description and produces a categorized estimate covering site work, foundation, framing, mechanicals, finishes, and overhead. No template assembly. No drag-and-drop forms.
Claude classifies, parses, and extracts cost data from messy historical estimates and supplier invoices — Excel, PDF, Word, mixed formats — and updates the contractor's personal pricing model with each upload.
Every estimate is scored 0–100 against 16 universal rules and 5 project-type rules before it ever reaches the contractor. Issues surface as alerts, not silent mistakes.
Claude reasons over photos from a job site, blueprint PDFs, septic plans, voice memos, and meeting recordings — six input modes, one model family, one consistent output.
The estimate that went out the door was specific, defensible, and competitive. It held up under client scrutiny. The contract was awarded.
More importantly, the time savings compounded. Hours not spent on data entry were hours spent walking the site, validating sub bids, and pricing risk — the work that actually determines whether a commercial bid wins or loses.
“I built this because every estimating tool I tried was made by people who'd never been on a job site. So I built one that thinks like a contractor — backed by the best model I could put behind it. The $4.2M commercial bid was the proof. Claude was the brain.”
Dylan L.
Founder, EstimAI Pro · Working builder, New England