Hungary’s capital city has long been known for its extensive public transportation system, with its dense network of tram, trolley, metro, cogwheel rail and suburban rail routes. Budapest’s already impressive transit system, however, is about to get another boost in the coming years, thanks to the construction of the M4 metro line and this will also boost property prices in the areas to be served.

The M4 metro—also referred to as the “green line” will connect the South Buda suburbs to Budapest’s city centre, on the Pest side, and to the Eastern Railway Station (the Keleti Pályaudvar).

Initially comprised of 10 stations, the line will be expanded to incorporate another five stops on the Pest side of the River Danube.

The M4 will serve the already booming 11th District, also referred to as Új Buda. This part of the Hungarian capital is home to mix of mid-twentieth century apartment blocks from the former socialist era—which though once considered budget housing have now appreciated conserably in value—to charming heritage buildings.

The 11th District is also home to two of the most famous attractions in Budapest, namely the Gellert Baths—a medicinal spa with natural mineral waters dating back to the Roman times—and the Liberation Monument on top of the Gellert Hill.

Real estate prices have been increasing steady in the 11th District, but with the completion of the M4 metro line scheduled for late 2010 or early 2011, now may very well be an opportune time to invest, ahead of the anticipated real boom to come.