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A long-context reviewer that sits beside the existing system, reads what it already produces, and closes proposal writing. Aimed at construction estimators, surfacing the exposure nobody has priced.
In short: Long context-Powered Proposal Builder for Estimators is a long-context reviewer aimed at construction estimators, covering proposal writing. It scores 71/100 on AltF Ideas, carried by timing (97) and held back by feasibility (29). Typical pricing is $2.9k–$53k per customer per year, with a first version reachable in six to twelve months for $38k–$86k.
Construction teams lose proposals rebuilt from scratch that are 80% identical. Every construction team solves this the same way: someone stays late. Whoever knows how it works becomes a single point of failure.
Point a long-context reviewer at proposal writing, and let people review output instead of producing it. Revenue is per-project, which suits a buyer who wants the cost to track the value rather than the seat count.
| Total addressable market | $596M |
|---|---|
| Category growth (CAGR) | 19% |
| Annual contract value | $2.9k – $53k |
| Pricing model | Per-project |
| Time to first revenue | 51 days |
| Startup cost to MVP | $38k – $86k |
| Build effort | 6-12 months |
Million-token context windows made whole-document reasoning possible in one pass. 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 |
| The incumbent suite | Sells a platform; this job is one neglected module inside it |
| A spreadsheet | The real incumbent in most of the market, and it is free |
Every customer wants their own edge cases encoded, so onboarding cost is the real constraint.
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