CANTON, MASS. — Standard Communities has acquired Canton Estates, a 65-unit, a naturally occurring affordable housing complex located on the southern outskirts of Boston. Built in 1982, the property comprises two three-story buildings that house one- and two-bedroom units. The seller and sales price were not disclosed. Standard Communities plans to invest about $2.4 million in capital improvements to the unit interiors and to address other deferred maintenance costs.