sellyourboat.io is built by Wall & Fifth.

sellyourboat.io serves two audiences from one platform. Yacht brokers get a white-label listing system on their own branded domain — an eight-step submission wizard for sellers, an admin panel to review and publish, lead capture, and a CRM with automated email follow-up. Boat buyers get a public marketplace where every listing comes from a vetted brokerage rather than an anonymous seller or a scraped aggregator.

It began as a single tool for one broker who needed boat owners to submit listings through their website. When a second broker asked for the same thing, then a network of regional brands, it stopped being a project and became a product. Today it runs multiple broker tenants, each fully isolated — own data, own branding, own domain — on a single shared codebase.

The platform is a Next.js application with a Prisma data layer over Neon Postgres, deployed on Vercel. Tenancy is resolved at the edge: each broker subdomain maps to a brand record, and the same request pipeline serves the marketplace, the per-tenant admin, and the seller-facing wizard. Transactional email runs on Resend; media on Vercel Blob; e-signature through Yousign.

Public pages use slug-first URLs and a shared cached query for inventory, so search engines and language models crawl clean, canonical addresses without exhausting the database during static generation. Listing content is generated from broker-supplied facts under a strict prompt that uses only the data provided — no invented specifications. The result is a system one team can run: the listing wizard, the admin, the publishing pipeline, and the marketplace syndication, all in one place.

AI is in production, not in a demo. It turns a broker's raw facts about a boat into structured, accurate listing copy, and it powers the email sequence engine that follows up with buyers based on how each enquiry arrived. The model is constrained to the facts it is given, classified into the right fields, and held to the same editorial standard as everything else on the site.

That is the point of sellyourboat.io as a reference: it is a real, revenue-facing AI application that brokers depend on daily — the kind of production AI app Wall & Fifth builds.