Sometimes bedrooms may not be significant due to collinearity (see #7). Bedrooms above a certain number are usually chopping a small house up even smaller. A 1200 square foot home with 4 bedrooms may not be as valuable as a 1200 square foot home with 3 bedrooms. Due to our model rules, an additional bedroom on a comparable property will never have a positive adjustment. However, there are often times where an adjustment will not be suggested for this reason.