I analysed Spain's BOE property auctions in the Canary Islands and here's the real margin

A student at the ULPGC has built a software tool that tracks the BOE (Spain's Official State Gazette), the Social Security system and Idealista to detect flats auctioned in the Canary Islands well below market value. His calculation estimates a clean 25% margin on a flat in Las Palmas, even more in some cases.

BOE property auctions are a market that has existed for decades and that almost nobody looks at. The Boletín Oficial del Estado publishes auction notices for seized assets every week, and among them there are flats. The problem is not a lack of opportunities, it's that finding them requires hours of manual screening.

## What you can find in a BOE auction in the Canary Islands

BOE auctions in the Canary Islands include flats in Las Palmas and other parts of the archipelago with starting prices that can sit well below market value. The key lies in the condition of the property and, above all, in the encumbrances attached to it.

A **ULPGC** student who works with data analysis has built a software tool that tracks the **BOE**, the **Social Security** system and **Idealista** to detect these assets. The system directly discards those with complex encumbrances, which are the ones that turn an opportunity into a legal headache.

## The 25% margin and how it's calculated

The algorithm has detected a flat in **Las Palmas** whose auction price is well below its market value. Cross-referencing both figures, the estimated clean margin is **25%**, and in some cases more.

That percentage is not a guaranteed profit. It's an estimate that depends on the market value holding steady, no hidden encumbrances appearing and the award process completing without incidents. The tool is open to investors and agencies in the area, who can test it and give feedback to improve the code.

## Why manual screening doesn't scale

Filtering auctions by hand is slow and error-prone. Every notice requires checking encumbrances, seizures and registry status. With hundreds of regular publications, the bottleneck is not a lack of data, it's time.

Automating that filter changes the starting point. Instead of reviewing everything, you only review what passes the first cut. That doesn't eliminate the risk, but it reduces the preliminary work.

Before investing in an auction, it's advisable to verify encumbrances, registry status and valuation with a professional.