Site analysis, ready for your drawing.

Layer diagram
Plates
Seen from

Each sheet is one plan drawing of the site, in the order a place is built up: the ground, its contours, water, green, trees, streets, footpaths, the buildings, then the analysis on the map and your massing if you added one. The sheets are spread so none hides the one below. The dashed lines tie them to the same points, so a corner on one sheet is the same corner on the next.
Site section
Vertical scale
Show behind the line

Cut buildings are dark; buildings behind the line get lighter the farther they are. Heights come from the same data as the 3D view.

How it works

  1. 01 Place the site

    Search an address or click the map. Choose a circle or a square up to 2 km, or open your parcel from a file.

  2. 02 Get the data

    Buildings, streets, water and green come from OpenStreetMap; the ground from open terrain data. It takes a few seconds.

  3. 03 Analyse

    Fix a building's floors with a click. Cast shadows for any day; show slope, sky view, noise, walking time, wind, climate and earthquakes.

  4. 04 Design and export

    Add your own massing, draw a section, make a layer diagram. Take DXF, SVG, PNG, OBJ and STL, or the quick presentation PDF.

Where the data comes from, and how far to trust it

Buildings, streets, water, green
OpenStreetMap, drawn by volunteers from aerial imagery. Positions are usually within 1 to 5 m.
Building heights
Measured where OSM has a height, from the floor count where it has one, otherwise your default. The Site tab shows how much of each, so you know before you draw.
Terrain
Terrain Tiles on AWS, from SRTM in Turkey: one sample every 30 m or so. Good for the shape of the land, not a survey.
Sun and shadow
Calculated in your browser from the sun's position for the day and time you choose.
Wind and climate
NASA POWER: hourly wind for the last three years and long-term monthly climate, for the area around the site.
Earthquakes
The USGS catalogue: magnitude 4.5 and above within 150 km since 1900. Shown for information, not as a design value.
Active faults
GEM Global Active Faults Database (CC BY-SA 4.0), mapped at regional scale. The file for the whole world comes from this site in one piece, so it never tells us where you are looking.
Magnetic declination
World Magnetic Model WMM2025 by NOAA and the British Geological Survey, worked out in your browser.
Your own model
Read from your file in your browser, up to 50 MB in total. It is never uploaded.

Nothing you do here is sent to ArchiSofts. Your browser fetches the open data directly from its sources, and a parcel or model file never leaves your computer.

Bringing your parcel

  1. Save your parcel's outline as a KML or GeoJSON file: from your land registry's or municipality's map portal, Google Earth, QGIS, or most CAD and GIS software.
  2. Choose the file under Your parcel. It is read on your computer and never uploaded.
  3. The site moves onto the parcel, and its area and current coverage appear under All figures in the Site tab.

The parcel stays in your browser. ArchiSofts neither receives nor keeps it. Coordinates must be longitude and latitude (WGS84), the standard for both formats.

Questions

Is it really free?

Yes. No account, no limit on downloads. It runs in your browser on open data, so there is nothing for us to charge for.

Why are some buildings the wrong height?

Because nobody has entered their floors in OpenStreetMap yet. Click the building, type the floors, and the drawing, ratios, shadows and 3D model all follow.

Will the DXF line up with my municipal map?

Choose ITRF96 TM 3° coordinates when exporting. The drawing then lands on the municipal base map to about a metre.

Which programs open the files?

The DXF is AutoCAD R12, which AutoCAD, Rhino, SketchUp, Revit, ArchiCAD and Illustrator all read. OBJ opens in Rhino, Blender and SketchUp; STL in any slicer.

The map server is busy. What now?

OpenStreetMap's query server is shared by everyone. The tool tries again by itself, and if the server is still busy it draws the site from the map tiles instead. For the full data, wait a minute and press the button again.

Can I put my own design on the site?

Yes. In the Design tab, add an OBJ, STL or GLB file, up to 50 MB in total. Place and turn it on the map, see it in 3D with the sun, render a picture; it also appears in the section and the layer diagram. The file stays on your computer.

Can I remove buildings or change many at once?

Yes. Click a building to change its floors or remove it. Shift, Ctrl or Cmd adds more buildings, and Select an area takes every building in a rectangle; the floors you enter go to all of them. In the Design tab, Select the buildings under my model finds the ones your design overlaps. Removed buildings can be brought back at any time.