Bob introduces the nine-unit affordable housing project in Roxbury, MA, by touring the neighborhood with the community-based developers from Nuestra Comunidad CDC.

Bob shows that here, as is often the case in urban construction projects, soil decontamination is taking place at the same time as foundation excavation.

At another site, we meet Arnold Johnson and George Chin, contractors for the accessible hour the job, who show Bob around a unit that's already been framed.