"The new standards will create [a path] for market-rate, 4-story buildings with up to 9 units or 9,999 sqft in size that cover up to 70% of a lot. The city’s LMI housing reqs – 20% of units at 80% of AMI – kick in for buildings 10 units or 10,000 sqft."

https://bankerandtradesman.com/cambridge-upzoning-could-unlock-3-6k-new-homes/