sitedia takes one address and draws a full set of site-analysis diagrams for it. Pick a site, pick a radius, and you get buildings, land use, year built, high-rise and low-rise, green space and water, roads, transit, city block grain, density and terrain — each in a matching circular or rectangular frame, ready to download as SVG, PNG, DXF or 3D (GLB, 3DM, SKP).
Anyone who has put together a design report has done this: screenshot a map, drop it into Illustrator, trace the buildings one by one, color them by use. An hour or two per drawing, and you start over when the site moves. The time goes into drawing, not into thinking.
But almost everything in those drawings is public data. Building footprints and heights, the year a building went up, what the lot is used for, where the parks and subway entrances are — all of it is already published. What was missing was a way to put it on a report page at a fixed scale, in a consistent frame, with a legend that matches.
That is the whole product. sitedia does not interpret your site for you. It draws the base material accurately and fast, so the analysis is yours to write.
It is not a zoning check and not a feasibility study. There are no zoning district boundaries, no FAR calculations, no setback envelopes in the US version — those need jurisdiction-specific datasets and legal review, and getting them subtly wrong is worse than not showing them at all.
It is also not a survey. Everything here comes from open datasets with their own vintages and error margins. Use it for analysis and communication, not for anything that needs a stamped drawing.
The US edition covers New York City (all five boroughs), the City of Los Angeles, San Francisco, Boston, Washington, DC, Chicago, Miami, Dallas, Houston, Denver, Seattle and Minneapolis for now. Buildings, height, low-rise, density, roads, blocks, green space, water, terrain and aerial imagery come from national datasets; year built, land use and lot size come from each city's tax-lot data — MapPLUTO in New York, the County Assessor's parcels in Los Angeles, the Assessor-Recorder's secured property roll in San Francisco, MassGIS standardized assessor parcels in Boston, Office of Tax and Revenue parcels (Open Data DC) in Washington, DC, Cook County Assessor parcels in Chicago, Miami-Dade Property Appraiser parcels in Miami, Dallas Central Appraisal District parcels in Dallas, Harris Central Appraisal District parcels (through the state's StratMap file) in Houston, the City and County of Denver Assessment Division parcels in Denver, King County Assessor parcels in Seattle, and the City of Minneapolis assessor's parcel data in Minneapolis. Open a site nobody has opened before and it builds on first visit, then answers instantly. Measured coverage is on the data sources page.
Every panel carries its own source note in the exported file, so a drawing that leaves your desk still says where it came from.
sitedia is built and run by one person — an urban designer who got tired of tracing buildings. It started as a Korean tool and grew a US edition because the problem is the same everywhere. If a panel looks wrong, or a dataset you rely on is missing, the feedback button on the main page reaches me directly.
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