Answer:
False.
The statement is not universally true. The cost-effectiveness of expanding a house later versus adding an extra room initially depends on various factors, including the specific circumstances, local building regulations, and individual preferences. Sometimes, planning for expansion during the initial construction phase can be more cost-effective, as it avoids certain complexities associated with retrofitting or modifying an existing structure. It's advisable to consider the specific context and consult with experts for the most suitable approach.