9. According to the principle of contribution, which of the following improvements made to real property would have the MOST positive effect on value?

Answer: A

Explanation:

Adding a second bathroom would have the MOST positive effect on value.

Improvements that significantly enhance utility and functionality of a property tend to yield the highest increase in value. In this case, adding a second bathroom increases the property’s appeal to potential buyers and renters, thus having a substantial positive impact on its market value.

A) adding a second bathroom

This option is correct because adding a second bathroom directly addresses a common buyer preference for more than one bathroom in a household. This improvement can significantly enhance the utility of the home, making it more attractive in the market, which is likely to lead to a substantial increase in property value.

B) painting the exterior

While painting the exterior can improve curb appeal and make a property look well-maintained, it does not add significant functional value. The effect on the overall market value is usually minimal compared to structural improvements, making this option less impactful.

C) seal coating the driveway

Seal coating the driveway is primarily a maintenance task that can help prolong the life of the asphalt but does not contribute to the functional space or layout of the home. As a result, its positive effect on property value is relatively minor compared to more substantive improvements like adding bathrooms.

D) repairing a damaged roof

Repairing a damaged roof is an essential maintenance task that prevents further deterioration and protects the value of the home. However, while necessary, it does not enhance the property's functionality or appeal in the same way that adding a bathroom does, and thus has a lesser impact on overall value.

Conclusion

Adding a second bathroom is the most effective improvement for increasing property value because it significantly enhances the home's functionality, appealing to a broader range of buyers. In contrast, the other options, while beneficial in their own right, either provide limited value enhancement or focus on maintenance rather than functional upgrades. Therefore, option A stands out as the most impactful choice.