The Dorchester Reporter details Wu's proposal, which calls for increasing the minimum number of "affordable" units developers have to provide from the current 13% to 20%.
And most of the units would have to be available to people making up to 60% of the Boston area median income, rather than the current 70%.
The proposal would also reduce the minimum number of units in a new building that would trigger the requirement from ten to seven, and increase the housing "linkage" fees developers of commercial buildings have to pay.
The proposal would not affect projects whose developers have already filed plans with the city.
More details from the city.