It can fit a comfortable 5/5 with good common space.
of course, it all depends on where you are.
In many areas of CA, people call 2500 sqft house as "huge". With wide-angle lens, they routinely produce the house pictures showing as spacious as 5,000 sqft ones. haha
Yes, larger houses will be harder to sell. 3000-4000 should be more manageable.
