About the atlasBengaluru Property Atlas

The atlas puts the things a Bengaluru buyer normally checks in six different tabs onto one screen: what a locality costs per square foot, what the government says it is worth, whether a project is registered, and how far it is from a metro station, a hospital, a school, a lake or a place of worship.

What it is

A map of the Bengaluru Urban district and the ring of taluks around it — Nelamangala to Hoskote, Anekal to Doddaballapur — with one hexagon per locality and one marker per listing. Filters narrow by type, status, budget, size and approval; the dossier on the right works out stamp duty, registration, brokerage and the monthly instalment on whatever price you are looking at; the layer dock on the left overlays the civic geography that actually decides whether a location is liveable.

Nothing about it is a portal. There is no login, no lead form, and nobody is paid to rank anything. It is an instrument for reading the city, and every number on it names its source.

Where the data comes from

• OpenStreetMap — Metro and rail lines and stations, bus stands, tech parks, hospitals, police and fire stations, government offices, schools, colleges, places of worship, lakes, parks, markets and malls — every point and line on the civic layers. © OpenStreetMap contributors, ODbL 1.0.
• OpenFreeMap — The vector basemap tiles the atlas draws the city on, served free and without an API key. If they cannot be reached the atlas falls back to a plain dark grid — no other tile server is used — and says so. © OpenFreeMap, tiles built from OpenStreetMap data.
• Karnataka RERA — The registered-projects list (promoter, registration number, status) and the published list of projects advertised without registration, which is what drives the “Not approved” badge. Karnataka Real Estate Regulatory Authority, Government of Karnataka.
• Kaveri / IGR guidance values — Government guidance (circle) rates per street, used as the floor under the price heat map — a plot quoted below its guidance value is quoted below what it can legally be registered at. Department of Stamps and Registration, Government of Karnataka.
• Nominatim — Geocoding for RERA project addresses that carry no coordinates. Rate-limited to one request a second, with results cached, as the usage policy requires. © OpenStreetMap contributors via the Nominatim service.
• Live web search — On demand only, when you press “Live” in a dossier: the Anthropic API's web search tool summarises what is currently advertised in that locality and returns links. The atlas shows the summary and the links; it never copies portal pages. Results link out to the third-party portals that published them.

Seed listings are illustrative

The listings bundled with the atlas are generated sample data, priced from the real per-locality bands and guidance values but not describing real properties on sale. They exist so the map is readable before any refresh has run and so the atlas still works with the API offline. A dossier always says which kind of record it is: Sample data, RERA or Live.

What the approval badge means

The badge answers one question: will a bank lend against this? RERA registration, BDA approval and a BBMP A-khata are financeable, so they read Approved. A B-khata property and a project on the RERA unregistered list read Not approved. Anything the atlas cannot place reads Unknown rather than being quietly reassuring.

Advertising

The atlas sells four clearly-labelled placements, self-serve, from the advertise page: a rotating HUD banner on the map, a dossier card targeted by locality and property type, a sponsored listing that gives one of an advertiser's own listings a gold ring and first place in its locality, and an exclusive locality takeover.

How it works. You pick the placement, the localities and the dates, upload a creative, and pay by card, UPI or netbanking through Razorpay. Nothing goes live until a human has read the copy and looked at the image — usually within 24 hours — and a rejected booking is refunded in full. Prices start at ₹499 a day for a sponsored listing and ₹2,999 a day for a takeover, multiplied by the locality's price tier (×0.7 to ×2.0), discounted up to 30% on a 30-day run, plus 18% GST. The full rate card is on the advertise page.

Questions, invoices, or a campaign the form cannot express: ads@bengaluru-property-atlas.pages.dev.

Legal notes

• No portal scraping. The atlas does not crawl, copy or cache pages from 99acres, MagicBricks, Housing, NoBroker or any other listing portal. Where it can help you search one, it builds a normal search URL and sends you there.
• Live results link out. Listings found by the live web search are shown as a short summary plus a link to whoever published them. The publisher keeps the listing and the copyright; the atlas keeps nothing beyond a short-lived cache entry.
• Government data is used as published. RERA and guidance-value data are read from the Karnataka government's own public pages, at a polite request rate, and are attributed above.
• OpenStreetMap is share-alike. The civic layers are ODbL data and carry the © OpenStreetMap contributors credit wherever they are shown, including on the map itself.

Roadmap

• Registered-transaction history per locality, so trend lines rest on deeds rather than asking prices.
• Commute isochrones — minutes to the tech parks at the hours people actually travel, not straight-line distance.
• Lake and storm-water-drain buffers with the flooding history of 2022 overlaid.
• Per-project RERA complaint counts and completion dates against the promised ones.
• Saved searches with a nightly diff, so a shortlist tells you what changed while you slept.

Read a locality without opening the map: all 35 locality guides, each with its phase rates, guidance values and the answers to what buyers ask about it.
Map data © OpenStreetMap contributors · Tiles © OpenFreeMap · Registration data © Karnataka RERA · Guidance values © Department of Stamps and Registration, Karnataka. Built as an open instrument, not a brokerage.