Ive looked online to see if any comparable homes were up for rent but I haven't found any close by with the same property features.

The NWI classification means absolutely nothing from a regulatory perspective and is notoriously spotty in accuracy, but it's a good first hint that there might be something there to look at if it shows a feature.

There were more recent sales, which the appraiser used, but these comps were all severely outdated, and lack valuable features our house has.  

For a 1-4 unit residential property, the appraiser is going to be looking at a number of variables, but the following three are some of the most importantSimilarity of property type to the subject propertySimilarity of property size/features to the subject propertyProximity to the subject propertyAppraisers will generally look for properties that have sold recently that are similar in property type, size/features, and are proximate to the subject property.Let’s say that you are looking at fixing and flipping a 3 bed, 1 bath SFR (single family residence) in a northern suburb of Chicago.The appraiser likely is not looking at duplexes, because the property type is dissimilar.The appraiser likely is not looking at 3 bed, 5 bath SFRs because the property features are dissimilar.Lastly, the appraiser is likely not looking at properties that are several miles away, or in a completely different city than the subject property.The appraiser is most likely going to be looking at 3 bed, 1 bath SFRs that have recently sold near the subject property.You can also consult realtors in your area to get a sense of if your estimate is close or not.Hope this helps,Michael

Shiplap walls are featured in all the living/dining area, kitchen, and all 3 bedrooms.

Features such as crown molding and shiplap walls were added.

Features such as crown molding and shiplap walls were added.

Home features fresh paint throughout interior.

Home features fresh paint throughout interior.

The home has Austin stone features on the exterior and has a yard with a privacy fence.