About J.I. Development
Pittsburgh-focused residential development led by Joseph Iannelli — modern townhomes, careful renovation, and neighborhoods built to last.
Building Pittsburgh's Future, One Neighborhood at a Time
J.I. Development LLC, in partnership with MStreet Realty, is a Pittsburgh-based home builder and real estate developer specializing in modern townhome construction and historic renovation. From stunning city-view properties in Mount Washington to vibrant new communities near Frick Park, we build homes designed for modern living in Pittsburgh's most exciting neighborhoods. Our portfolio highlights before-and-after work so you can see the level of finish we deliver—not just on paper, but in real homes.
Connect on LinkedInPrinciples
What guides our work
Disciplined design
We prioritize daylight, circulation, and outdoor connection—details buyers feel immediately on tour and appreciate years after move-in.
Neighborhood fit
Every site is evaluated for walkability, views, access to greenspace, and the broader context of the block—so new construction elevates the community around it.
Execution you can trust
From framing to finishes, we build with long-term durability in mind—partnering with experienced collaborators and clear communication for buyers and neighbors.
Explore available homes
Browse communities, listings, and floor plans—then reach out when you're ready.