grundradar
FreeCheck any property for free across 13 categories – in 15 seconds
AI Summary
Grundradar is a free online property assessment tool for Germany that analyzes 13 risk categories – including flood risk, radon, contaminated sites, and planning law – using official registers. Users receive a GrundScore from 0 to 100 within 15 seconds, along with land values and property tax multipliers, with no account registration required. The tool is designed for private individuals and prospective property buyers who need a quick, data-driven overview before purchasing land.
✓ Pros
- +Completely free to use with no account registration required
- +Assessments based on official sources (BKG, DWD, BfS, UBA, Copernicus) with transparent source references
- +Fast results in around 15 seconds with a clear, easy-to-read GrundScore
✗ Cons
- −Does not replace a professional expert report or legal advice
- −Data coverage varies by category and region across Germany
Use Cases
- →Check a property for flood, radon, and contaminated site risks before purchase
- →Determine land values for a specific address or parcel identifier
- →Look up the property tax multiplier for a desired municipality and estimate ancillary purchase costs
- →Check for nature reserves and drinking water protection zones at a planned construction site
Who is it for?
Ideal for private individuals and prospective property buyers in Germany who want to quickly and freely assess a property for risks before making a purchase.
Tags
What is Grundradar?
Grundradar is a free web tool that checks properties in Germany for risks using official data sources. By entering an address or parcel identifier, users receive a GrundScore on a scale of 0 to 100 within 15 seconds, summarizing 13 risk categories. These include flood risk, radon exposure, contaminated sites, and planning law. The tool also displays land values and the property tax multiplier for the relevant municipality. No account registration is required.
The underlying data comes from official sources: BKG, DWD, BfS, UBA, and Copernicus. Grundradar cites its sources transparently, making results traceable, without claiming to provide expert report quality.
Core Features
- GrundScore (0–100): Evaluates a property across 13 categories based on official registers and delivers results in around 15 seconds.
- Risk Categories: Covers flood risk, radon, contaminated sites, nature reserves, and drinking water protection zones, among others.
- Land Values: Displays the officially determined land value for the entered location.
- Property Tax Multiplier: Shows the tax multiplier for the desired municipality, allowing for a rough estimate of ancillary purchase costs.
- Source References: Every risk category identifies its data origin.
Who Is Grundradar For?
The tool is aimed at private individuals who want to buy or build on a property and need a data-driven overview before their first notary appointment. Those searching in an unfamiliar region who don't know the local specifics will benefit most. Grundradar does not replace a professional expert report. Whether radon levels are genuinely problematic or a contaminated site entry would block a construction project must be assessed by a qualified expert. Data coverage varies by category and federal state, which can lead to incomplete results, particularly in sparsely populated areas.
Classification & Alternatives
Grundradar fills a niche between paid real estate due diligence services and the laborious task of researching multiple official authority portals independently. Comparable approaches exist in specific areas: state authorities offer their own flood hazard maps or land value viewers, but rarely cover multiple risk categories in a consolidated way. Paid PropTech providers offer deeper analyses, but are generally aimed at commercial users.
Anyone who needs a quick initial overview of a specific property without clicking through a dozen individual portals will find a straightforward starting point here.
