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Quartio
Enter an address and discover the value of your home
Quartio gives you an instant property price estimate for any address in Barcelona and Catalunya, based entirely on official public data. No scraping. No signup. No hidden fees for the basic estimate.
Top comment
The Spanish real estate market is incredibly opaque. Want to know how much your flat is worth? An agent will give you a number with no data behind it. A professional appraisal costs €300+. And listing portals show asking prices — not what properties actually sell for. What Quartio does: Type any address in Barcelona → get an instant price estimate Adjusted for your flat's specific features (size, floor, elevator, renovation, year built) See rental yield, comparable sales, mortgage simulation, and investment score Interactive price map of all 73 barrios with transport overlay Check if your property is in a rent-controlled zone (271 municipalities in Catalunya) Optional: AI-generated detailed report for €4.99 Where the data comes from (all legal, all public): Colegio de Registradores — real registered sale prices INE — Housing Price Index Gencat INCASÒL — rental prices from mandatory deposit registrations Catastro — property characteristics (surface, year built, floor) via free API Open Data BCN — neighbourhood boundaries, transport stops The tech (for the nerds): XGBoost ML model (R²=0.989) exported to pure TypeScript — runs in your browser, zero latency Point-in-polygon zone detection using real barri boundaries Next.js 16, Leaflet maps, 3 languages (ES/EN/CA), 271 static SEO pages No database — all data embedded at build time
About Quartio on Product Hunt
“Enter an address and discover the value of your home”
Quartio was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #158 on the daily leaderboard. Quartio gives you an instant property price estimate for any address in Barcelona and Catalunya, based entirely on official public data. No scraping. No signup. No hidden fees for the basic estimate.
On the analytics side, Quartio competes within Home and Tech — topics that collectively have 793.4k followers on Product Hunt. The dashboard above tracks how Quartio performed against the three products that launched closest to it on the same day.
Who hunted Quartio?
Quartio was hunted by Carles Arnal. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Quartio including community comment highlights and product details, visit the product overview.