Observed arrival · 2026-08-27

Grannkollen Reads the Neighborhood While You Browse Homes

grannkollen.app Observed source

Editorial interest 78/100 Selection signal · not a rating of the site

A free Chromium browser extension that adds neighborhood data to listings on Swedish property sites.

Landing page captured for the 2026-08-27 issue.

Field notes

On supported listings, Grannkollen reads the publicly displayed address or coordinates and populates a side panel with area scores, schools, transit, safety statistics, and nearby places. The page names OpenStreetMap for geocoding and nearby-place data and Kolada for municipal crime and population-density statistics. It says responses are cached in IndexedDB on the user’s browser, while preferences remain in local browser storage rather than on a project-controlled server.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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