Duplex for sale by owner in Waltham, MA 02453. Investors/Professionals/Contractors/Ambitious homeowners - this "as is" large 2 family duplex is targeted for you! Located in the West End of Waltham located minutes from Brandeis University, train to Boston and shopping. One side is refinished including central a/c and is rented. The 2nd half of this duplex has been gutted down to the studs" and is ready for someone to turn this into a double income gem. This business zoned opportunity is a great w... See site for full property details.