Which of the following sellers must complete a real estate condition report?

The requirement for completing a real estate condition report primarily pertains to residential properties. In this context, a seller of a residential four-unit apartment building must complete a real estate condition report even if they never occupied the property themselves. This is because the condition report is designed to disclose any known issues with the property, which is crucial for potential buyers. Even if the seller hasn't lived in the building, they are still obligated to provide this disclosure for the benefit of the buyer's understanding of the property's condition.

The other options do not fit this requirement. Sellers of commercial real estate or raw land do not typically have the same obligation to complete a condition report as required for residential properties. Additionally, the requirement also depends on the seller's knowledge and involvement with the property, which affects whether they need to provide such disclosures. In contrast, the vacation home, while it may be subject to different requirements, does not have the same stipulation as a multifamily residential property from a seller's obligation perspective. Therefore, the obligation to complete the real estate condition report is specifically linked to the nature and use of the property in question.