The most affordable real estate development in Panyu, Guangzhou is the "Panyu New Town Residential Area." This area offers a variety of housing options that cater to different budgets, from small apartments to larger family homes. The affordability is attributed to several factors, including lower land costs, government incentives, and a growing demand for affordable housing in the region.

According to a report by the Guangzhou Real Estate Association, the average price per square meter in Panyu New Town Residential Area is approximately 10,000-12,000 RMB, which is significantly lower than the city's average of around 20,000-25,000 RMB. This price difference is primarily due to the lower cost of land in Panyu compared to the more central districts of Guangzhou. The government has also implemented policies to encourage the development of affordable housing, which has further driven down prices.

Additionally, the Panyu New Town Residential Area benefits from its proximity to key transportation links, such as the Guangzhou South Railway Station and the Guangzhou Metro, making it easily accessible to the rest of the city. This connectivity has increased the area's appeal to both locals and expatriates seeking affordable housing options. The development also boasts a range of amenities, including schools, hospitals, and shopping centers, which contribute to its attractiveness as a residential area.

Moreover, the area's growing population has led to an increase in demand for housing, which has helped to stabilize prices and make them more affordable. Developers have responded to this demand by constructing new residential projects that cater to a wide range of budgets. This has created a competitive market, with multiple options available to potential buyers.

In conclusion, the Panyu New Town Residential Area in Guangzhou is the most affordable real estate development in the region due to its lower land costs, government incentives, and strategic location. The combination of these factors has made it an attractive option for those seeking affordable housing in the city.