One Property a Year Won't Hurt

Reviewed by Diario de un Inversor · UpdatedJune 13, 2026

Our review

«One Property a Year Won't Hurt» has become the go-to book for many Spanish-speaking real estate investors looking for a systematic, replicable method to build a property portfolio without requiring large initial capital. Devis proposes a strategy built on three pillars: finding properties with above-average appreciation or yield potential, financing them efficiently through bank leverage, and managing them with cash-flow-optimising criteria. The book is practical and direct, with real transaction examples and concrete figures. Its most evident limitation is context: written for the Latin American real estate market, some legal, tax, and market specifics do not translate directly to the Spanish or European context. Additionally, the method's viability depends on favourable financing conditions that are not always available. Nevertheless, as a mental framework for approaching real estate investment systematically — rather than opportunistically — the book offers methodological clarity that is rare in the genre.

Key takeaways

• Systematic real estate investment — one property per year, with clear criteria — can build meaningful long-term wealth without requiring large initial capital.
• Bank leverage is the real estate investor's primary tool, but using it intelligently requires understanding the impact of interest rates on cash flow.
• Positive cash flow, not speculative appreciation, should be the primary selection criterion for an investment property.
• Tenant selection and property management are operational factors that determine both the real return and the actual risk of the investment.

Fact

Published in 2021, this is Carlos Devis's best-selling title in Spanish-language real estate investing.