What would this cost a human team?
Every figure on this page is an ESTIMATE — labelled as such, with its reasoning shown so it can be challenged. The evidence base is the real histories of comparable products and a formal estimation cross-check, not a guess.
This scope, as built here: [ESTIMATE] 5–10 person-years (central range 6–8).
A full commercial product of this class: [ESTIMATE] 35–80 person-years (central range 50–60).
In calendar terms, this scope is a team of four to six people — two or three engineers, a designer, a tester, a part-time writer — working roughly twelve to twenty months. A solo builder would need five to ten calendar years at the same effort, which is why solo-built versions of this kind of tool are normally much narrower.
Where the years go (this scope)
| Workstream | Person-years [ESTIMATE] |
|---|---|
| Conception and design (palette research, editor design, export format) | 0.7 – 1.2 |
| Editor, live preview and palette components | 1.8 – 3.0 |
| Export engine (standalone folder, print and offline behaviour, search completeness) | 0.6 – 1.0 |
| Server bundle (accounts, recovery, audit log, database, mail, headers, backups, protected video) | 1.0 – 1.8 |
| Installers for two platforms, signing, clean-machine testing | 0.4 – 0.8 |
| Testing (functional, role-based, attacker persona, accessibility, cross-platform) | 0.8 – 1.4 |
| Documentation, presentation site, walkthrough film | 0.4 – 0.7 |
| Total | 5 – 10 |
Testing, security proof and installer work together take roughly a quarter to a third of the total — high, because the product's promise is “safe by default for a non-expert owner”: every protection must be proven, on both operating systems and again inside the exported site, not merely implemented once in the editor.
The evidence
- Wix — founded 2006 by three founders; about two years to a public editor; a ground-up technology rewrite within six years; thousands of staff within two decades.
- Squarespace — the strongest low anchor: one exceptional founder, sole developer until 2006, shipped a credible first version alone — for the web of 2003, before responsive design, consent law, modern accessibility rules and code-signing existed. Commerce arrived about nine years after the builder.
- Webflow — three founders in 2013, but the idea had roughly nine years of prior attempts behind it. A visual editor that outputs clean code is a multi-year, research-grade problem.
- Dreamweaver — a small, well-supported team took just over a year to version 1.0, building partly on an acquired codebase, in a far simpler web era.
- Framer — eight years of editor expertise, and entering the builder category still required a dedicated rebuild.
- Formal cross-check — the classic Constructive Cost Model was used only as an upper-bound sanity check: it counts code a modern team reuses instead of writing, and omits consent, accessibility and signing duties a modern team cannot skip. The two errors partly cancel; neither justifies quoting its raw output as the answer.
Why the reasoning matters more than the number
- The editor is a platform, not a page: selection, placement, undo, responsive behaviour, properties and preview must agree in every state — and with the exported code.
- Export correctness multiplies the test surface: every component × every screen size × every browser × with and without scripting × print.
- The server bundle is a second product, with its own threat model. Hosted builders hide it inside a large operations organisation; a self-hosted bundle must be safe by default, which is design and test effort, not hosting effort.
- Installers are a fixed cost that does not shrink with team size — and none of the hosted comparators had to pay it at all.
- What is excluded matters: hosted multi-tenancy, billing, a plugin marketplace, native mobile applications and a full commerce platform are each, historically, multi-year programmes of their own. They are excluded from both figures above.
How to quote these numbers: always the range, the word ESTIMATE, and the scope together — “[ESTIMATE] 6–8 person-years for the scope as defined here.”