If you're selling this year, get a few agents in to the house as soon as you can and get it ready for sale ASAP.
It depends on where you live in Plymouth. The areas vary in price if you live in Plymouth Plaza built in the 60s by Pemtom, if you live in the 80s built homes near Northwest Blvd., if you live over on Hwy.24 homes built in 70s & 80s by the Taco Bell, or if you live West of 494 off of Cty. 9 in 90s and newer construction. They are all priced according to their vintage and the amenities of that particular construction period. You don't want to be comparing your house to something 20-30 years older than yours, in a location next to a freeway or railroad tracks if your home has several acres and is much newer. Those are important mitigating factors when deciding what your home is worth.