Sorry for the late reply.
Translating the Japanese そう (either the direct observation version or the hearsay version) as "seems" often does not produce natural-sounding English.
In English, "seems" is usually not used when discussing simple facts, such as where somebody lives, how old they are, etc., whether it is based on your own observation or based on something you heard. "Seems" is usually used when stating one's impression of something more intangible. Example: "He seems like a nice guy."
For a simple matter of fact, such as where somebody lives, or how old they are, a more natural way to express it would be to use the word "think" or "believe".
Examples:
"I believe he lives in England."
"I think he lives in England."
"I believe he is about 25 years old."
"I think he is about 25 years old."
Note that the above examples could be used for translating either type of Japanese そう: the one based on direct observation, or the one based on hearsay.
There are special cases, though. For direct observation of the weather, for example, we often use the expression "it looks like" ("It looks like it is going to rain.")