Grand Happy Home Co., Ltd. (บริษัท แกรนด์ แฮปปี้โฮม จำกัด) was a Thai real estate company known for developing Happy Condo Ratchada 18 in Bangkok. The company was established on August 11, 2005, initially under the name New Happy Home Co., Ltd., and later changed its name to Grand Happy Home Co., Ltd. on December 30, 2005. The company dissolved on July 3, 2023, after operating for nearly 18 years.