Inmobiliaria Sotomayor

(01) The brief

Sotomayor rents and sells industrial and commercial property in the Santiago Metropolitan Region. It needed a serious catalogue of warehouses and sites, forms that do not get lost, and a way to publish properties without depending on a developer.

(02) What it does

• Search by sale or rent, property type, region and commune, with listings, photos and map location.
• Forms to rent, list a property or request a valuation; every submission arrives by email and the client gets a receipt.
• Its own panel with preview, change history and an undo button.

(03) How it was built

• Static site generated by a build script and served by a Cloudflare Worker, which also handles the panel and the forms.
• Editable content in KV: every save keeps a copy of the previous version, and undo is recorded too, so it can be redone.
• Almost 300 automated tests run locally before publishing each phase of the panel.

(04) Security

• Forms validated in the browser and again on the server with the same Chilean rules (name, +56 9 mobile, communes from a closed list).
• Origin and Sec-Fetch-Site checks against submissions from other sites, and daily email caps.
• Panel with its own session and kept out of search engines.

(05) Speed and Google

Static pages from the Cloudflare edge; third-party libraries hosted on the same domain.

(06) What it deliberately doesn’t do

• It is not a portal with user accounts and does not integrate with external property portals.

(07) Real measurement

Google PageSpeed Insights, mobile, September 30, 2026. Numbers are not rounded up; they are re-measured periodically. Full table of the 27 sites →