I’d recommend going several times of day including rush hour and also the weekends.
We looked at a few homes in Collins Ranch in Carmel Valley which is not as close to I-56 and surprisingly we could hear traffic noise from cars even on the weekend when there wasn’t much traffic. The sound from the cars tend a tendency to echo. I’m not sure if it was just that day we went or if it’s always like that.
But for us personally, no way I was going to spend over $1 million on a house and have to worry about keeping my windows shut due to noise from the highway.
I guess it’s just different for different people so you have to determine how much it bothers you. Some people it’s not a big deal but others it’s a no go.
Just keep in mind the weather is so great in San Diego that you’ll have your windows open for much of the year so it just comes down to a personal tolerance level for yourself on the noise.
Which development is this in? Is this the new stuff they are building next to Pacific Highlands Ranch?