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A narrow retrieval engine scoped to proposal writing alone — no platform, no migration, no six-month rollout. Aimed at legal solo practitioners, surfacing the exposure nobody has priced.
In short: Legal Proposal Builder on Retrieval is a retrieval engine aimed at legal solo practitioners, covering proposal writing. It scores 75/100 on AltF Ideas, carried by moat (95) and held back by feasibility (43). Typical pricing is $1.1k–$23k per customer per year, with a first version reachable in six to twelve months for $44k–$118k.
Legal teams lose proposals rebuilt from scratch that are 80% identical. A typical legal operation runs this on people, memory, and a shared spreadsheet. Most operators assume this is simply the cost of doing business.
A retrieval engine that sits beside the existing system, reads what it already produces, and closes proposal 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 | $1.4B |
|---|---|
| Category growth (CAGR) | 15% |
| Annual contract value | $1.1k – $23k |
| Pricing model | Seat SaaS |
| Time to first revenue | 55 days |
| Startup cost to MVP | $44k – $118k |
| Build effort | 6-12 months |
Retrieval over private documents became cheap enough to run per query. Legal is growing at roughly 12% a year, and this job has not been re-tooled since it was designed around paper.
| Who | The gap |
|---|---|
| An internal hire | Works until volume doubles, then breaks again |
| An offshore back office | Cheaper per hour, but does not scale down to the tail |
| A vertical competitor | Priced and scoped for enterprise accounts, not this segment |
The incumbent is a person, and displacing a person is a change-management problem.
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