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Point a retrieval engine at proposal writing, and let people review output instead of producing it. Aimed at construction estimators, charging only when it actually works.
In short: Construction Proposal Builder on Retrieval is a retrieval engine aimed at construction estimators, covering proposal writing. It scores 77/100 on AltF Ideas, carried by demand (95) and held back by open field (37). Typical pricing is $5.1k–$109k per customer per year, with a first version reachable in six to twelve months for $44k–$142k.
Construction teams lose proposals rebuilt from scratch that are 80% identical. The work sits between two systems that were never designed to talk. The backlog only surfaces when a customer or an auditor finds it first.
A retrieval engine that sits beside the existing system, reads what it already produces, and closes proposal writing. Revenue is per-outcome, which suits a buyer who wants the cost to track the value rather than the seat count.
| Total addressable market | $502M |
|---|---|
| Category growth (CAGR) | 19% |
| Annual contract value | $5.1k – $109k |
| Pricing model | Per-outcome |
| Time to first revenue | 62 days |
| Startup cost to MVP | $44k – $142k |
| Build effort | 6-12 months |
Retrieval over private documents became cheap enough to run per query. Construction is growing at roughly 20% a year, and this job has not been re-tooled since it was designed around paper.
| Who | The gap |
|---|---|
| A vertical competitor | Priced and scoped for enterprise accounts, not this segment |
| An internal hire | Works until volume doubles, then breaks again |
| The incumbent suite | Sells a platform; this job is one neglected module inside it |
The buying cycle is slower than the build, so runway assumptions matter more than code.
An idea you cannot act on is entertainment. Four concrete steps, wired to tools already running on AltFTool.
Score problem urgency, willingness to pay, and reachable audience size before writing any code.
→ AltF IdeaLabAsk how they handle this today and what it costs them. If nobody can quantify the pain, the demand score is optimistic.
→ Survey BuilderCheck availability, DNS, and email authentication in one pass so your first outreach lands in an inbox.
→ AltF DomainOpsStand up intake, the review queue, and billing before you build the clever part.
→ AltF Flow