An effort to reshape Mattapan into a “10-minute neighborhood” and add housing density could come with financial and logistical help for homeowners looking to add units to their lots, Mayor Michelle Wu’s chief of city planning said in an interview with the Reporter last week.

Last month, officials with the Boston Planning and Development Agency (BPDA) rolled out a draft proposal that calls for residents to access services within 10 minutes of their homes and creates zoning that allows new accessory dwelling units in backyards.

The proposal does not include separate planning efforts underway for Boston Public Schools, Blue Hill Avenue, Cummins Highway, and the Neponset River Greenway extension.

The goal for the city is to increase home values and build generational wealth among Black families over the next 10 to 20 years, meaning it would not cause an immediate market shift. The final plan could come to the BPDA board for a vote before the end of the year.

Arthur Jemison, who took over as chief of planning and head of the BPDA in May, said he’s “very bullish” on the Mattapan proposal for accessory dwelling units, known as “ADUs 3.0.” That’s because they’re an example of “gentle density,” that is, adding housing units without blocking someone else’s view or coming with a host of planning or zoning issues.

The size of Mattapan’s residential lots is also well-suited for ADUs, according to Jemison, who said he is investigating with Wu housing chief Sheila Dillon the possibility of using one of the city’s down payment or home loan programs to be extended toward ADUs 3.0 and help residents finance the building of the additional units.

“If we're able to create a loan program that supports that, and importantly, get some of the suite of professionals you need to build an ADU, create a program that gives you access to kind of approved lists of those folks, I think you might have a chance to actually increase the value of Mattapan residents' properties,” Jemison said.

It’s his preference that the program be geared toward homeowners who live on the property. Helping Mattapan residents build generational wealth is “very much what we're about in terms of trying to increase people's access to growth in the value of their stake in the city. Because not everyone's been able to participate in that same way,” he added.

In the interview, Jemison also touched on a project in the development pipeline at Dorchester’s northern border: The $5 billion Dorchester Bay City, proposed by Accordia Partners LLC, which seeks to add residences, labs and commercial space over the next 20 years between the JFK/UMass MBTA Station and Dorchester Bay.

The project has come in for criticism from the group Dorchester Not For Sale, which argues that Bay City doesn’t do enough to provide affordable housing.

Jemison said he spoke with the group, as well as local civic groups and officials from UMass Boston, which bought the former Bayside Expo Center property and leased it to Accordia.

“There's a lot of common interest there, in having new development support a wide range of things, everything from the university to life sciences, and residential affordability components,” Jemison said.

The various groups are not far apart, and he believes consensus can be found. “I think we can come together around the things that people are talking about,” he said.