Appraiser Comes to Your Home: Mobile Service at a Fixed Price

A classic vehicle appraisal usually requires a visit to a stationary inspection center or workshop. This involves considerable logistical effort, especially if the vehicle is not registered or if it concerns immobile assets such as home storage systems or boats in a marina. A mobile appraiser solves this problem by coming directly to the location of the object. Whether in a home garage, on the yard of a trade business, or at a berth in the harbor: the inspection takes place wherever the asset is located. This not only saves time but also prevents unnecessary mileage or the risk of transport damage on the way to the inspection.

DIAVAG has optimized this process for the regions Hamburg, Berlin and Munich. An appointment is arranged within 24 hours. The appraiser brings all necessary measuring devices in a specialized hardware case. Thanks to the standardized workflow, the quality of data collection remains at the same high level regardless of location. This is especially important for private sellers who are employed and don't have time for half-day workshop visits. The on-site service also offers a discreet and efficient solution for lawyers and notaries who need to determine values in the context of inheritance matters or divorces.

A mobile appraiser is only as good as their equipment. DIAVAG relies on a standardized hardware case, which is also sold to independent appraisers for auf Anfrages. The equipment includes an OBD2 scanner for reading the fault memory, a coating thickness gauge for identifying repainting and accident damage, and a tread depth gauge. A digital multimeter is used for electrical systems. These tools enable an objective condition assessment that goes far beyond a purely visual inspection. Every step of the inspection is supplemented by standardized photo documentation, which rules out manipulation.

The entire on-site process is optimized for efficiency and typically takes less than 15 minutes. The collected data is processed in real time. A senior inspector reviews and finally signs the appraisal report before it is sent to the customer as a PDF. Optionally, the appraisal can be given a notarial hash on the Polygon blockchain. This ensures that the document cannot be altered afterwards and provides an additional layer of security for all parties involved. This combination of physical precision on site and digital security in the background sets new standards in the appraisal industry.

In the appraisal industry, billing by the hour or based on the object's value is widespread. This often leads to a lack of transparency and hard-to-calculate costs for the end customer. DIAVAG breaks with this tradition and offers clear fixed prices. For standard assets such as combustion-engine cars, boats, cargo bikes or eScooters, the price is auf Anfrages. This price includes travel within the regions as well as the complete BVSK-compliant appraisal report. There are no hidden fees for documentation or digital delivery.

For more complex assets such as EVs, home storage systems or high-value vehicles, the fixed price is auf Anfrages. This premium is justified by the use of the Premium Battery Test. Since the battery is the most valuable component in electric vehicles and storage systems, a precise diagnosis of the state of health (SoH) is essential. While conventional inspection organizations often only offer a basic diagnosis, DIAVAG delivers detailed data on cell balance and capacity. For commercial customers such as car dealers or fleet operators requiring more than 50 appraisals per month, individual terms are agreed, which can also include an API connection to existing dealer management systems (DMS).

The legal usability of an appraisal report depends largely on the independence of the appraiser. DIAVAG acts as a purely neutral entity. The company does not sell vehicles, does not broker insurance, and does not perform repairs. This strict separation from trading and workshop interests is the basis for certification as an inspection body under ISO/IEC 17020 Type A. This represents the highest level of independence and is a decisive criterion when appraisal reports are to be used in court or in administrative proceedings.

In contrast to vehicle-purchase portals, whose goal is the lowest possible purchase price, or workshops that may have an interest in repair orders, DIAVAG delivers an objective picture of the market value and technical condition. All appraisers are qualified according to BVSK standards. Should legal questions arise in the course of an appraisal, for example when settling an inheritance or a contested divorce, DIAVAG generally recommends consulting a lawyer or notary. The appraisal report then serves as a well-founded factual basis for the legal assessment by the relevant professionals.

While most mobile appraisers focus on classic cars, DIAVAG covers a total of seven asset classes. In addition to combustion-engine and hybrid vehicles, there is a strong focus on electromobility. Here, the mobile service is particularly valuable, as the battery test can be carried out directly at the customer's charging point. Boats and yachts are also part of the portfolio. An appraiser comes directly to the marina or winter storage to determine the value for insurance or sale purposes. This saves the owner expensive crane operations or transfer trips.

Another specialty area is construction and agricultural machinery. Excavators, wheel loaders or combine harvesters are difficult to transport due to their size. Here, the on-site service is the only economically viable solution for value determination. Micromobility with cargo bikes and eScooters is also covered, which is particularly relevant for fleet operators in cities. Finally, DIAVAG also appraises stationary home storage systems for photovoltaic installations. In real estate transactions or warranty disputes, the Premium Battery Test provides the necessary clarity about the condition of the storage cells. This breadth of expertise is a unique selling point compared to classic inspection organizations such as TÜV or DEKRA.

The condition of the battery is a decisive factor in the residual value of a used electric vehicle. A simple look at the mileage is not sufficient here, as the previous owner's charging behavior has a massive influence on cell aging. DIAVAG's Premium Battery Test goes deep into the system data of the high-voltage battery. It determines the state of health (SoH), cell balance, actual kWh capacity, as well as the charging curve and internal resistance. This data is essential for a buyer to minimize the risk of an expensive battery failure.

This diagnosis is also of central importance for home storage systems. When a house with an existing PV system is sold, the value of the storage unit must be determined precisely. The mobile appraiser carries out the measurement directly on the installed system. This is also important with regard to the upcoming EU Battery Passport, which becomes mandatory from February 2027. DIAVAG is already prepared for these regulatory requirements today and delivers data that meets future European standards. For owners, this means future-proof documentation of their investment.

To make the right decision for a vehicle appraisal, comparing the available models is helpful. Online algorithms offer a quick initial estimate but are based only on statistical values and do not take into account the individual technical condition or accident damage. Workshops and purchasing stations are often biased, as they have an economic interest in the vehicle. Classic inspection organizations offer high standards but are usually tied to fixed locations and often lack specialized battery diagnostics for all asset classes.

The comparison shows that DIAVAG closes the gap between the fast but imprecise online estimate and the thorough but cumbersome stationary inspection. The combination of mobility, fixed pricing and technical depth makes the service particularly attractive for demanding private customers and professional dealers.

For commercial players such as car dealerships, leasing companies and fleet operators, the mobile appraisal service offers scalable solutions. From a volume of 50 appraisals per month, DIAVAG provides individual terms. A key advantage is integration into existing IT infrastructures. Via a DMS API, appraisal reports can be fed directly into dealers' dealer management systems. This speeds up the purchasing process and ensures seamless documentation of the vehicle inventory. The standardized workflow guarantees that every vehicle is assessed according to exactly the same criteria, regardless of its location.

In addition, DIAVAG offers appraisers who want to digitize their own business the hardware case, including the specialized software. At a list price of auf Anfrages, partners receive the necessary tools and access to the platform to create appraisal reports according to the DIAVAG standard. This promotes the nationwide rollout planned for 2026. Fleet managers also benefit from residual value tracking, made possible through regular mobile inspections. This allows future disposal proceeds to be planned more precisely and risks in accounting to be minimized.

An appraisal report is often a document of great legal significance. Whether it concerns securing evidence after an accident, determining value for the tax office, or dividing assets: the quality of the documentation is decisive. DIAVAG appraisal reports are BVSK-compliant and signed by experienced senior inspectors. Compliance with the ISO/IEC 17020 Type A standard ensures that the inspection process meets the highest international standards for independence and competence. This is a key factor in the acceptance of the documents by insurers and in legal disputes.

Data is stored in compliance with GDPR on servers within the European Union. For customers who require absolute tamper resistance, the blockchain option offers a digital fingerprint of the appraisal report. In insurance cases, the appraisal report is used to determine the replacement value in accordance with JVEG guidelines. However, it is important to note that DIAVAG only provides the technical and value-related basis. The final decision on reimbursements lies with the respective insurer. In complex legal disputes, the appraisal report should be handed over to a specialized lawyer as evidence in order to best represent one's own interests.