Book a Mobile Appraiser: Professional On-Site Valuation

Booking a mobile appraiser primarily offers a logistical advantage. Traditional inspection organizations often require the vehicle or machine to be brought to a fixed inspection center. This is associated with considerable cost and time for unregistered vehicles, heavy construction machinery, or boats in a marina. A DIAVAG mobile appraiser instead comes directly to the asset. Whether in a home garage, on a business yard, or at a mooring in the harbor, the inspection takes place wherever the item is located. This not only saves transport costs but also enables an appraisal in the owner's familiar environment.

Another decisive factor is speed. While appointments with stationary appraisers often have to be booked weeks in advance, DIAVAG guarantees an appointment within 24 hours. The on-site processing time is typically less than 15 minutes, as the appraiser follows a highly standardized workflow. Digitization of the process ensures that the finished PDF report is delivered the same day. This efficiency is invaluable especially for short-notice sales decisions or urgent insurance matters. The customer retains full control over their schedule without having to forgo professional expertise.

Quality in appraisal comes from standardization and the use of precise measurement technology. Every DIAVAG appraiser carries a specialized hardware case calibrated for various asset classes. This includes OBD2 scanners for reading the fault memory and analyzing real-time parameters of the onboard electronics. A paint thickness gauge is used to identify repainting and hidden accident damage, which is essential for determining any merchantable diminished value. Tread depth gauges and digital multimeters complement the technical instrumentation to build a complete picture of the condition.

Particularly noteworthy is the Premium Battery Test, which is standard for electric cars and home storage systems. This determines state-of-health (SoH), cell balance, and actual kWh capacity. Unlike simple estimates, this test delivers robust data on the most important and expensive component of an electric vehicle. The entire documentation is captured via a standardized, tamper-proof photo sequence. This structured process ensures that every report, regardless of the appraiser's location, has the same high quality and comparability. The result is a BVSK-compliant document that is finally signed by a senior inspector.

A common problem when commissioning appraisers is unpredictable costs due to hourly billing or travel fees. DIAVAG relies on a transparent fixed-price model here, which is easy to calculate for private customers and commercial clients alike. The standard rate of auf Anfrage covers most asset classes such as combustion-engine cars, boats, cargo bikes, and e-scooters. This price includes travel within the areas (Hamburg, Berlin, Munich), the on-site inspection, and the production of the digital report.

For more complex assets such as electric vehicles or PV home storage systems, the premium rate of auf Anfrage is charged. This premium is justified by the use of the Premium Battery Test and the more in-depth analysis of high-voltage components. For commercial customers such as car dealers or fleet operators reaching a volume of more than 50 reports per month, DIAVAG offers individual terms. An API connection to existing Dealer Management Systems (DMS) is also possible here, to seamlessly integrate the valuation process into the digital workflows of the trade.

The legal usability of a report stands and falls with the independence of the appraiser. DIAVAG acts as a purely neutral authority. The company does not sell vehicles, does not broker insurance, and does not carry out repairs. This strict separation from trading and workshop interests is a key difference from many online purchasing portals, which often use valuations merely as an acquisition tool for their own vehicle trading. A DIAVAG report serves exclusively to objectively document the current condition and market value.

This independence is underpinned by certification under ISO/IEC 17020 Type A, which defines the highest level of impartiality for inspection bodies. All appraisers work according to the guidelines of the BVSK (German Federal Association of Freelance and Independent Automotive Appraisers). This is especially important when the report is to be used in legally sensitive contexts such as inheritance, divorce proceedings, or insurance disputes. In such cases, DIAVAG provides the technical foundation, while a lawyer or notary should always be consulted for specific legal advice. Neutrality ensures that the report can be accepted by all parties as an objective basis for discussion.

When buying or selling a used electric car, the visual condition is often secondary to the health of the traction battery. Since the battery can account for up to 50 percent of the vehicle's value, a precise diagnosis is essential. Conventional inspection organizations often only offer a basic diagnosis that merely reads the fault memory. DIAVAG's auf Anfrage premium report includes a comprehensive Premium Battery Test. This determines state-of-health (SoH) based on cell voltages, internal resistances, and charge cycles.

This data is not only decisive for the current market value but also prepares vehicle owners for upcoming regulatory requirements. From February 2027, the EU Battery Passport becomes mandatory for new batteries. DIAVAG is already prepared today to capture and legally document the relevant data points. For buyers of a used EV, this means maximum transparency and protection against expensive purchase mistakes. Sellers, on the other hand, can use a certified report to demonstrate the value of their vehicle and stand out from listings with unknown battery condition. Documentation of cell balance also provides insight into whether individual battery modules are aging prematurely, which can be relevant for warranty claims against the manufacturer.

In situations where assets need to be divided or compensated, a professional valuation report is indispensable. In inheritance cases or divorces, courts and tax authorities often require proof of the market value of vehicles or machinery. A simple listing from an online portal is not sufficient for this. DIAVAG's reports are based on the Judicial Remuneration and Compensation Act (JVEG) and thus provide a robust basis for legal disputes. Signature by a senior inspector confirms the technical depth and correctness of the document.

Also in the event of an insurance claim, such as after a no-fault accident or theft, the replacement value is the central figure for compensation. A mobile report documents the condition immediately and on-site, which greatly simplifies evidence preservation. Optionally, DIAVAG offers the option of securing the report using a notarial hash on the Polygon blockchain. This makes the document absolutely tamper-proof and clearly attributable in time. For complex legal questions, however, those affected should always consult a lawyer or notary to clarify the specific requirements of the respective procedure. The report provides the technical foundation for the legal argumentation.

A unique feature of DIAVAG is the breadth of asset classes covered. While most mobile appraisers specialize in cars, DIAVAG's portfolio comprises a total of seven categories. These include cars and EVs as well as boats (motor and sailing yachts), construction and agricultural machinery, cargo bikes, e-scooters, and stationary home storage systems. Each of these classes requires specific expertise and adapted testing methods. For construction machinery, for example, operational safety in accordance with the EU Machinery Regulation is the focus, while for boats, hull integrity and propulsion technology are critically examined.

The appraisal of home storage systems is gaining massive importance in the course of the energy transition. In real estate transactions, the value of an installed photovoltaic system including storage must be precisely stated. A mobile appraiser can check the capacity and condition of the storage system on-site here, which can be decisive for the negotiation of the house's purchase price. In the field of micromobility too, for example with high-value e-cargo bikes, a professional report is useful after an accident or for resale. Standardization of the workflow allows DIAVAG to offer consistently high appraisal quality at a fixed price for all these different assets.

For commercial players in vehicle trading, time is a critical competitive factor. DIAVAG offers specialized solutions for this that go beyond individual appraisals. Through the integration of a DMS API, car dealerships and fleet operators can commission reports directly from their existing systems. After the inspection, the data automatically flows back into the dealer's system, minimizing administrative overhead. This is particularly efficient when appraising trade-ins or taking inventory of large fleets.

In addition, DIAVAG offers a partner model for independent appraisers. For a list price of auf Anfrage, they can purchase the complete hardware case including the specialized software. This allows local appraisers to become part of the DIAVAG network and benefit from the standardized processes and brand recognition. The digital infrastructure ensures that all reports are centrally reviewed and approved by senior inspectors. This safeguards the network's high quality standard and offers customers the same reliability nationwide, regardless of which appraiser attends the appointment on-site.

To ensure a smooth inspection in under 15 minutes, minimal preparation by the client is helpful. The asset should be freely accessible and clean so that paint damage or structural defects are clearly visible during photo documentation. Important documents such as the vehicle registration certificate part I, the service booklet, and invoices for recent repairs or maintenance should be made ready. For boats or construction machinery, technical manuals or operating hour records are also relevant.

For the technical inspection, especially when reading control units via OBD2, the appraiser needs access to the interior and the vehicle keys. For electric cars, it is advisable to provide the vehicle with a state of charge (SoC) between 20 and 80 percent to create optimal conditions for the battery test. Since the appraiser is mobile and brings all necessary equipment, no vehicle lift is required. However, a level surface and adequate light are advantageous for the precision of the paint thickness measurement and the visual capture. Once the short inspection is complete, the customer can immediately continue with their day while the data is processed in the background and the report is finalized.