Yes you can. Sometimes attributes are not marked as significant because we do not see enough variation in the data at the time of modeling. However, we encourage appraisers to review attributes again in order to determine if they should make adjustments. This is where an appraiser’s expert market knowledge is very valuable. One word of caution, though, on double-counting. Sometimes two attributes (like bedrooms and bathrooms) are highly correlated. In that situation, it is often the case that the regression chooses one of those attributes to give most of the adjustment value. In a situation of high collinearity, it is important for the appraiser to avoid making adjustments for bedrooms (which may be insignificant) when the value adjustments for bedrooms are mostly captured by bathrooms.