Land filling is one of the most common methods of disposing of solid waste all over the world, however, with constantly increasing waste volumes and land scarcity, waste diversion and recovery are more likely the best answer to these concerns. This research paper presents an estimation of the diversion impact on the required land area and on the lifespan of a technical landfill centre (TLC) in Constantine, Algeria. Our methodology consists in drawing up three scenarios of operation of TLC, over a period of 15 years, with each scenario, applying a different waste diversion rate, results show that: waste diversion reduces land consumption and increases the TLC's lifespan in all three scenarios but diverting for composting is the most efficient one.