Extreme Drought and Real Estate Appreciation: Why "Grey Waters" Are the Future of Luxury In a country where water is increasingly expensive and scarce, having a water management system is an elite differentiator, especially for foreign buyers concerned with sustainability. A house with a garden and swimming pool consumes thousands of liters. 31 Aug 2026 min de leitura The Technology We Sell: If your home has these systems, we highlight them at the top of the listing: Dual Plumbing System: A system that recycles water from showers and sinks (greywater), treats it, and uses it for toilets. Reduces water bills by 40%. Rainwater Harvesting: Underground cisterns that collect rainwater from the roof for automatic irrigation. Legalized Hertzian Borehole: An asset that guarantees autonomy. At Royal House, we explain to the buyer: "This house pays zero water to keep the garden green all year round." This justifies a premium price and attracts conscious investors. Share article FacebookXPinterestWhatsAppCopiar link Link copiado