🖼 For private sellers and landlords

The light tile for your listing: measured hours of sun as an image, in two minutes

You are selling or letting privately — on willhaben, ImmoScout, in a group chat? Azima measures how many hours of direct sun your flat gets on 21 March, 21 June and 21 December, from the officially measured building heights of the City of Vienna, and gives you the figures as an image (1200 × 630 px). It goes into the listing as a photo. Free, no account, nothing to install.

A listing says “bright”. A figure proves it. The tile is the one picture in your gallery that nobody can take: hours of direct sun at the window, from the City of Vienna’s measured heights, the day the sun stands highest and the day it stands lowest.

Three steps, two minutes

1Enter address and floorOpen Azima, type the address of the flat and the floor. The measurement takes seconds: every compass direction against the measured heights of the neighbouring houses, the sun’s path calculated astronomically.

2Tap “Image”Right under the measurement, in the “Light widget for your listing” sheet, and under “My properties” for every measured address: Image · HTML · Link. “Image” copies the tile to the clipboard or saves it — on the phone through the share sheet.

3Into the listing as a photoUpload the tile like any other picture — on willhaben, ImmoScout or wherever your listing lives. One sentence next to it is enough: “Direct sun on 21 March: 4.2 h — measured with Azima, viennalivingmap.com”.

Measure the address now →

What the tile shows

☀Three figures, three reference days21 March, 21 June and 21 December: the equinox and the two solstices. Hours of direct sun at the window for the floor you entered.

☀The address and the floorAs you typed them. The tile belongs to one flat, not to a street. If you keep the house number out of the listing, show the tile at the viewing or in the chat instead.

☀“Not an expert report” and the sourceEvery tile says what it is and where the heights come from: City of Vienna, data.wien.gv.at, CC BY 4.0. That line is what makes the figures believable.

☀Warm paper, no logo wallDrawn, not screenshotted: the figures large, the explanation small, one line for Azima. It fits next to your photos instead of fighting them.

Why it helps you — not against you

The tile is a trust mark, not a lie detector. It filters viewings that help no one: whoever needs evening sun in December and would not get it stays away — and whoever comes, comes with trust, because the figure was there before the visit. A measured disadvantage is never removed, only explained better; that is exactly why the figure counts.

Your address stays yours

The address is looked up in your browser, the heights come from the City of Vienna’s open data, the tile is drawn on your device. No account, no upload, no tracking. The listing portal receives a picture, nothing else.

Frequently asked

What does the tile cost?

Nothing. No account, no card, no key. The measurement and the image run in your browser; the reports on Azima earn the money: €9.50 per report, €39 per month for Premium.

Does it work on willhaben?

Yes, as a photo. Private listings on willhaben take pictures and text, not scripts — so the tile is an image, not a widget. Agents with their own website can embed the live light widget instead.

Where do the figures come from?

From the generalised roof model of the City of Vienna (officially measured building heights, CC BY 4.0), the terrain and the astronomical path of the sun. For every compass direction the model finds how high the neighbours stand and when the sun clears them.

Is this a certificate of insolation?

No. It is a model built from measured neighbouring heights and the real path of the sun; curtains, balconies and trees are not part of it. The tile says so. A certificate under ÖNORM is a planner’s job.

What if my flat gets little sun?

Then the tile says so — and still helps you: people for whom the flat would be too dark do not come to a viewing that helps no one, and the others come knowing what they get. Azima also shows which months are the brightest, and the full check names the rooms that catch the most.

Can I hide bad values?

No. A measured disadvantage is never removed — that holds for every tile and every report and cannot be switched off. That is exactly why a flat hunter believes the figure.

Does it work outside Vienna?

No. Without official building heights Azima gives no hours.

Who sees my address?

Nobody at Vienna Living Map. The address is looked up in your browser; the tile is drawn on your device. The listing portal sees the tile as a picture, nothing else.

Does the tile replace the energy certificate?

No. Every sale or rental listing in Austria has to state the heating demand (HWB) and the overall energy efficiency factor (fGEE) of the energy certificate — private landlords included; missing figures carry a fine of up to 1,450 euros (Energieausweis-Vorlage-Gesetz 2012, § 3 and § 9). The tile adds the light; it replaces nothing.

What is the light record of a flat?

The link under “My properties” opens exactly this measurement — address, floor, the three reference days — on any device. Hand it to the next tenant or the buyer: they open it, it lands under their “My properties” marked as taken over, and the figure stays with the flat instead of with one listing. No account, no server; the link carries the address only in the part the browser never sends.

With your own website? The live light widget, free · For agents & developers · Buying? Light, heat and noise before you sign

Sources: City of Vienna Open Data (generalised roof model LOD2.1, address service, CC BY 4.0) · terrain from the Copernicus DEM · sun position calculated astronomically. Not an expert report.