I know that this is a stock trading forum, however I've found this forum to be helpful in other ways. If in zip code x the average house is selling for 200 per square foot. ALL THINGS CONSIDERED AVERAGE, if this house is in this zip code but on a major street, what could you expect this house to sell for in terms of square feet?
The major street being good or bad? (Ie. Busy or quiet?) Probably too many other variables to consider anyway, unless you post up a URL link.
It depends a lot on what you mean by "busy." Is it a commercial strip or just an arterial route through a residential area? Assuming the latter, I would guess 10% haircut minimum, maybe more considering it is a buyers' market.
How was the house priced when you bought it, compared to surrounding areas? Was it discounted when you bought it based on the street?