Prime investment/development opportunity in Waltham's desirable South Side! This two-family sits on a 5490sf RB-zoned lot. 1647 sq ft allowable footprint per Waltham's Small Lot/Old Lot Opinion guidelines (lot created prior to 1942). Buyers may rebuild two units and add an ADU, with the ADU required to be conveyed with one of the primary units. Old Lot Opinion would allow a new 1647sf footprint (not required to match existing) and requires 16 ft combined side setback. Existing structure offers holding income with two 1-bed units each TAW rented at $1,900/mo. Incredible opportunity for builders, developers, or investors looking for value-add potential in a prime location. Buyer to perform all due diligence.