Though, some buyers, no matter how far away from 540 the house may be, will always see it as a negative.
But in my opinion, if you are east of Rushing Wind, you should be fine. Even some homes closer to Scotts Ridge Trail should be good too - depending upon how many homes are between them and 540.
It is my understanding that toll roads have a much different affect on residential developments than other freeways. In addition, the NC Turnpike Authority, according to what I have heard, will be constructing high noise-barrier walls that are above and beyond what we are used to seeing in this area. I guess the noise level will be the most determining factor in the years ahead. Meanwhile, as our area continues to urbanize, the proximity to RTP will be harder to find in Western Wake County, and access to Triangle Expresway could possiby draw a premium in future markets.
Location in the neighborhood is the critical part of buying with reasonable comfort of less impact.
There are a lot of other factors that make Scotts Mill a great purchase for the future. It's never been a better time to buy, with the quality and charm of the homes to future school locations in the near future. The neighborhood will not be located at an Exit, so there are plenty of reasons to be confident in Scotts Mill.