In a non-disclosure state like Idaho, public records of real estate transactions may not be as readily available as they are in other states. This can make it more challenging to gather accurate market data for a comparative analysis, or "comps" analysis.
In states like Idaho, the sale price of a home is not required to be made public, which means that the data that would be used for a comps analysis is not publicly available, making it difficult for real estate agents or appraisers to gain access to that information.
In such a scenario, Real estate agents and appraisers who have access to the MLS data, can use that data to compare properties, while they may not be able to access exact sale price of the properties, they can access the details of the property such as size, age, location, square footage and all other important features. And by combining that information with their own knowledge of the local market, they can come up with a fairly accurate estimate of a home's value, but it may not be as accurate as it would be in a state where sale prices are publicly available.
Another approach could be using Tax assessment records, that are typically available to the public, these records often include the property's square footage, age and other characteristics, which can be used to compare properties. But these records may not reflect recent updates and renovations, so it's important to be aware of these limitations.
Ultimately, it's important to keep in mind that estimating the value of a home in a non-disclosure state like Idaho can be more challenging and may require more onsite inspections, and research by professionals. However with their knowledge of the local market and access to MLS, they can still make an informed estimate.