Developers of micro-apartments near transit stops in Boston would qualify for reduced parking requirements under the city’s proposed “compact living” regulations for new apartments and condominiums.

The two-year pilot program would allow studios as small as approximately 330 square feet, compared with the current 450-square-foot minimum, officials said at a forum Thursday night.

“This is a pilot policy to see how compact development can work in Boston,” said Tim Czerwienski, a project manager for the Boston Planning and Development Agency.

Minimum parking ratios would be reduced to 0.25 spaces per unit within a quarter-mile of public transit, 0.5 spaces within a half-mile and 0.75 spaces for properties more than a half-mile from transit. Occupants would not be eligible for resident parking stickers.

While allowing smaller apartments, the policy would add new requirements for ceiling heights, window sizes and common areas.

Projects incorporating some or all “compact living” units would be subject to the reviews normally required, such as BPDA and zoning board of appeals, as well as existing affordable housing minimums. But the BPDA’s oversight would extend to design review of interiors to encourage “creativity, livability and functionality,” said Marcy Ostberg, director of the Housing Innovation Lab.

Current city regulations require minimums of 450 square feet for studios, 625 square feet for one-bedrooms and 850 square feet for two-bedrooms.

The new guidelines are the result of a two-year study by the BPDA, mayor’s Housing Innovation Lab, Department of Neighborhood Development and Boston transportation department. They would apply only to new construction in projects of 10 or more units.

“There were concerns about taking a triple-decker and chopping it up into smaller units,” Ostberg said, adding that the intent is to preserve existing housing stock for families.

The policy will be presented to the BPDA board of directors and zoning board of appeals in August for approval, she said.