Developer lops a few floors off plans for one of two residential buildings down the hill from Mission Church

A Back Bay developer that wants to put two residential buildings on Smith Street on Mission Hill says it will soon file plans for one building with 13 floors, rather than the 17 it had originally proposed.

However, Weston Associates is also proposing to increase the height of the second building on the former Mission Church lower campus from its originally planned 6 stories to 8, according to a "letter of intent" filed with the BPDA this week.

Overall, Weston's new proposal for 80 and 100 Smith St. would mean 218 residential units, down from the 237 it originally proposed.

The original proposal called for the taller building to consist entirely of apartments, while the shorter building would have a mix of apartments and condos, along with 171 parking spaces.

The buildings would flank a former church building now used as offices by the Harvard T.H. Chan School of Public Health.

This is the second residential proposal for the land. Some 16 years ago, the then BRA gave approval for a redevelopment plan, which was never built, that called for two residential buildings and the conversion of the Mission Grammar School to residential units.

80-100 Smith St. filings and calendar.