
Police were alerted to the fire at Tambon Chaiyaburi house in Tambon Chaiyaburi at 7.30am. Firefighters took about 30 minutes to control the blaze, which consumed the entire house.
The house was owned by Urai Apikulchaiyasit, 88, who lives with her daughter, Nilaporn Apikulchaiyasit, 50.
The mother and daughter and their neighbours were making preparations to give foods to monks at the house as part of merit making for their dead relatives.
The fire started from the second floor following the sound of something breaking and the blaze spread quickly, police said.
Urai said her family had prepared Bt10,000 in cash to give to monks who would come for a meal at the house as part of the merit making.
She said her gold ornaments weighing five baht were also damaged in the fire.