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A retrieval engine that handles proposal writing end to end and hands a human the exceptions rather than the queue. Aimed at construction project managers, surfacing the exposure nobody has priced.
In short: Construction Proposal Builder on Retrieval is a retrieval engine aimed at construction project managers, covering proposal writing. It scores 77/100 on AltF Ideas, carried by timing (94) and held back by monetisation (49). Typical pricing is $1.2k–$24k per customer per year, with a first version reachable in about a quarter for $18k–$57k.
Construction teams lose proposals rebuilt from scratch that are 80% identical. The work sits between two systems that were never designed to talk. Whoever knows how it works becomes a single point of failure.
Proposal writing handled by a retrieval engine, with a human signing rather than writing. Revenue is seat saas, which suits a buyer who wants the cost to track the value rather than the seat count.
| Total addressable market | $1.3B |
|---|---|
| Category growth (CAGR) | 19% |
| Annual contract value | $1.2k – $24k |
| Pricing model | Seat SaaS |
| Time to first revenue | 46 days |
| Startup cost to MVP | $18k – $57k |
| Build effort | ~1 quarter |
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 spreadsheet | The real incumbent in most of the market, and it is free |
| The incumbent suite | Sells a platform; this job is one neglected module inside it |
| An offshore back office | Cheaper per hour, but does not scale down to the tail |
Accuracy is unforgiving here — one wrong output costs more than the subscription.
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