The addicta Index
A number from 0 to 10 that measures how much attention a court auction deserves. It is deterministic — the same formula for every lot, with no human judgement or artificial intelligence in the calculation — public and versioned: this page is the complete methodology.
How it is calculated (v3)
It starts from 5.0: the neutral point, that of an auction with no signals either for or against. Three components are added to this base, each with a stated weight:
| Component | Points | How it works |
|---|---|---|
| Price vs valuation | da −2,0 a +3,5 | Discount of the starting price relative to the valuation: it grows linearly up to +3.5 points with a discount of 85%. If instead the starting price exceeds the valuation, the penalty grows linearly up to −2.0 points (starting price equal to twice the valuation). |
| Unsold attempts | fino a +1,5 | +0.5 points for each previous sale attempt that attracted no bids, up to a maximum of +1.5. |
| Risks from the appraisal report | da −3,0 a +0,5 | −0.4 points for each of the first 5 risks found by the analysis of the appraisal report, then −0.2 for each risk beyond the fifth, up to a maximum of −3.0 (the penalty always grows: many risks cannot be fully offset by discount and attempts); or +0.5 if the appraisal report has been analysed and no risks emerge. If the appraisal report has not been analysed yet, the component is 0: the absence of analysis is not a merit. |
The index is the sum of the base and the three components, capped between 1.0 and 10.0 and rounded to one decimal place. The sum of the components shown on each lot’s page is the index: anyone can redo the maths and check it. In the rare cases where the sum falls outside the range, the index stops at the limit and the page says so next to the breakdown. The scale runs from 0 to 10, but by design the published value never drops below 1.0.
The bands
Besides the number, every index has a short label:
- ≥ 8,0 Strong opportunity
- 6,5 – 7,9 Interesting
- 4,5 – 6,4 Average
- 3,0 – 4,4 Weak
- sotto 3,0 Not very interesting
When we do NOT publish the index
The index is designed to stop when the data doesn’t hold up, instead of publishing a misleading number. It is not calculated when:
- the starting price is missing or a reference valuation is missing;
- the resulting discount is outside the plausibility band (from −100% to +85%): this is the typical case where the portal reports the valuation of the entire estate against the price of a single lot — the apparent “discount” is not a real reduction but a scale error.
Better no index than a wrong index.
Where the data comes from
-
Starting price and valuation: from the Ministry of Justice’s Public Sales Portal (PVP), updated roughly every 6 hours. The valuation is the official value
impoStima. - AI valuation from the appraisal report: used only as a fallback, when the PVP does not report a valuation. The auction page always states which source was used.
- Attempt history: reconstructed from the previous sales published for the same proceeding.
- Risks: from the analysis of the appraisal report (occupancy, building violations, prejudicial encumbrances and the like).
An honest note: the index is not frozen. It can update when new data arrives — a more complete attempt history, the analysis of the appraisal report — because it is always recalculated on the latest available data.
Versions
- v3 — July 2026 (current): progressive risk penalty — full (−0.4) up to the fifth risk, reduced (−0.2) beyond it, with the overall cap raised to −3.0. This prevents a high discount and unsold attempts from fully offsetting very risky case files.
- v2 — July 2026 (superseded): scale centred on the neutral point 5, plausibility band on the valuation, penalty for a price above the valuation, neutrality for appraisal reports not yet analysed.
- v1 — deprecated: a sum of merits only, with base 2, without plausibility checks.
Every change to the formula brings a new version number: an “addicta Index 7.5” cited today remains interpretable tomorrow too.
How to cite it
The recommended form is “addicta Index 7.5/10” or “according to the addicta Index”, with a link to the lot’s page on addicta as the source.
The index — number, band and breakdown into components — is shown on every auction page where it can be calculated. The pages are also available in Markdown for agents and language models: just request the same URL with the header Accept: text/markdown.
Frequently asked questions
What is the addicta Index?
It is a number from 0 to 10 that measures how much attention a court auction deserves. It is calculated with a deterministic, public formula, the same for every lot: the starting price relative to the valuation, previous unsold attempts and risks emerging from the analysis of the appraisal report. Neither human judgement nor artificial intelligence plays a part in the calculation.
Why is 5 “neutral”?
Because 5.0 is the starting point when there are no signals: price in line with the valuation, no previous attempts, no information from the appraisal report. Positive signals (a real discount, unsold attempts, an analysed appraisal report with no risks) add points; negative ones (price above the valuation, risks in the appraisal report) take them away.
Why do some auctions have no index?
By choice. The index is not published when the starting price or a valuation is missing, or when the resulting discount is outside the plausibility band (from −100% to +85%): this is the typical case where the portal reports the valuation of the entire estate against the price of a single lot. Better no index than a wrong index.
Can the index change over time?
Yes. The index is recalculated when new data arrives: updates from the Public Sales Portal (roughly every 6 hours), the attempt history reconstructed from previous sales, the analysis of the appraisal report. Changes to the formula, on the other hand, change the version number: the current one is v3.