I've help people with mortgages closer to the base (off Main Street) and the values there have been increasing from what I can tell.
My office is near the west natick train station and has been for 13 years. I dont think I have any extra limbs growing that I know of.
You ask a lot of questions here.
Are you having trouble finding a professional to help you?
I would contact a local real estate professional to help with this answer and to save time and money.
(Not me, I'm on the Cape, but I can help you choose a local pro if you want help doing so.)
(Please note: when you choose an answer as a Best Answer, or at least give a thumbs up, it helps those who answer questions here.)
Natick values in general have been low for what it has to offer, unless your looking in South Natick which has more land and more expensive homes.