Old houses in the US come with a lot of costs. They're usually poorly insulated, need to be brought up to code when renovations are performed, can have electrical and plumbing systems that need to be replaced in their entirety, and sometimes are just hard to insure in general (insurers can cancel your homeowners policy on any home in Florida over 40 years old at their discretion when your policy comes up for renewal). House has lead and asbestos? Remediation can be costly depending on your jurisdiction's requirements. This is less of a concern in highly desirable areas, as well to do buyers will buy for the land alone, demolish the property, and build new.

Disclosure: I renovate homes as a hobby, and occasionally demo those beyond repair. Most recent project was an older duplex in Naperville, IL torn down to replace with a modern three flat.