Seoul's take over deal with the golf course was initially planned earlier this year; however, the deployment received strong objections from Beijing. But now, the country is ramping up the plan.

"If the transfer and design and development take place at the same time, the process can be completed without too much delay," a source familiar with the matter told Yonhap. "Because of the unexpected delay, things will be sped up."

South Korea and US' THAAD agreement was reached in July, amid increasing tensions by North Korea's recurring ballistic and nuclear tests. But neighboring countries like China and Russia criticized the move as inappropriate, saying this could potentially cause an imbalance and affect other nations' interests.

The THAAD deployment "disrupts regional strategic balance, undermines the strategic security threats of regional countries... and does no good to peace and stability on the Korean Peninsula," Chinese foreign minister Geng Shuang said, reminding South Korea of Beijing's 'clear opposition' of the system.

Seoul, in response, said that the THAAD deployment is "a sovereign and self-defensive measure." Washington also argued that the system will be used against threats from Pyongyang. The THAAD system, which could range around 200 kilometers, is used to intercept short, medium, and intermediate ballistic missiles at the terminal incoming stage.