Walk south from Five Points down Columbia Avenue and nothing about the street changes. Same sidewalk, same trees, same easy five-minute stroll to Main Street. But somewhere around the 700 block, you cross a line that exists only on a zoning map, and on the other side of that line, an entirely different set of building rules applies. That line is why a $165 million luxury condo project with units starting above $2 million could rise exactly where it did, and nowhere closer to the square.
For anyone comparing historic downtown Franklin against the new construction filling in around its edges, that boundary matters more than the median price on any listing site. It is the actual mechanism deciding where Franklin's growth can land, and it changes what you are buying depending on which side of it your address falls on.
The line has a job
Franklin protects its historic core with a Historic Preservation Overlay District. Inside it, exterior changes to a property go through a review process designed to keep the streetscape looking the way it has for decades. That review process is part of what keeps Main Street recognizable as one of the country's most-honored small-town corridors, a distinction it has held through three consecutive decades of Main Street America recognition.
It is also, by design, a limit on new supply. You cannot build a 25-unit luxury condo tower with underground parking inside a district built to preserve single-family cottages and low storefronts. So when a developer wanted to build exactly that, the site selection wasn't really a choice between "close to downtown" and "far from downtown." It was a choice about which side of the overlay line the dirt sat on.
That is where the Margin District landed: one block south of Five Points, fronting Columbia Avenue near the intersection of Margin Street, on ground that sits just outside Franklin's Historic Preservation Overlay District. The project's own developers have described it as an extension of downtown rather than a replacement for it, and the design leans on historic cues on purpose, including the preservation of the old Handy Hardware building, a Columbia Avenue fixture the developer acquired in 2020 and folded into the new construction. But the reason the project could be built at this scale, with 25 residences ranging from roughly 2,000 to over 3,000 square feet and pricing starting just above $2 million, is that the overlay does not reach that far.
Construction broke ground in 2025. As of early 2026, 13 of the 25 units had already been reserved, with residential delivery targeted for 2027. The city closed a stretch of South Margin Street permanently to accommodate the project's underground parking and commercial footprint, a physical sign of how much building the site is absorbing compared to what the blocks around it were built for.
Inside the line versus outside it
The practical difference for a buyer comes down to what kind of real estate you are actually purchasing.
| Inside the overlay | Outside the overlay (Margin District and similar) | |
|---|---|---|
| Supply | Fixed. No new lots, no teardown-rebuild at scale. | Elastic. More can be approved as long as it lands outside the line. |
| What changes require | Review for exterior alterations on existing structures | Standard permitting, same as anywhere else in the city |
| Entry point | Renovated cottages, often the more accessible end of the downtown submarket | New construction starting above $2 million in this specific project |
| What you're really buying | Scarcity that cannot be replicated | Walkability and scale, without a supply cap protecting it |
That last row is the part worth sitting with. A historic cottage inside the overlay is one of a count that cannot grow. Every renovation, every sale, every appreciation cycle happens against a ceiling on how much of that inventory will ever exist. A Margin District unit buys you proximity to the same Main Street, but the land use rule that let this project exist could just as easily let the next one exist too, somewhere else along the same edge.
The edge is getting busy
The Margin District is not an isolated event. It is one entry in a pattern of new development landing on the perimeter of Franklin's protected core rather than inside it.
A few blocks over in Cool Springs, a 10-acre office park is being redeveloped into Canteen on Carothers, a walkable dining and retail destination. Char Restaurant, a 6,500-square-foot steakhouse with live jazz on weekends, and PennePazze, a family-owned Italian kitchen bringing its debut gelato concept to Franklin, are both targeting 2026 openings there, alongside Scout's Barbershop and a barre3 studio that opened in 2025. None of that required touching the overlay. It simply required land the overlay never covered.
Further south, off I-65 at Berry Farms, In-N-Out Burger is building its Eastern Territory corporate headquarters, a roughly 100,000-square-foot campus projected to bring around 277 jobs to the area, with completion targeted for late 2026 alongside the chain's first Tennessee restaurant location. Berry Farms sits nowhere near the historic overlay either. It didn't need to.
The takeaway isn't that any one of these projects is remarkable on its own. It's that Franklin's growth keeps finding land outside the protected line, because that is the only land where growth at this scale is legally possible. If you are weighing a home near downtown, the question worth asking isn't just what exists today, but how much more can still be approved on whichever side of the line your address sits on.
What this actually means if you're comparing the two
Franklin's blended median tells you almost nothing useful here. Citywide, homes sold for a median of $864,000 over the three months ending in June 2026, up 5.3 percent year over year, with the typical listing taking about 48 days to go under contract. That number sits nowhere near either extreme in this story. It doesn't reflect a renovated cottage inside the overlay, and it doesn't reflect a Margin District unit priced above $2 million. It's an average of two markets operating under different supply rules, which is exactly why relying on it to compare "downtown" against "near downtown" will mislead you.
If your priority is a property that cannot be duplicated, an interior overlay address is what you're actually shopping for, and you should expect a smaller, slower-moving pool of listings as the tradeoff. If your priority is downtown walkability with modern scale, newer finishes, and lock-and-leave convenience, projects like the Margin District deliver that, but you're buying into a zone where the city has already shown it will keep approving more of the same kind of supply next door. That's not a reason to avoid it. It's a reason to price the premium correctly, since first-mover advantage in a supply-elastic zone tends to compress as more projects follow.
A few questions worth asking before you write an offer
Does being one block from downtown mean my property is protected by the historic overlay? Not necessarily. Proximity to Main Street and inclusion in the overlay district are two different things. Ask specifically whether an address sits inside the mapped boundary, since that determines what future construction can happen around you, not just what your own property can do.
Will more projects like the Margin District get built along downtown's edge? Based on the pattern so far, yes is the reasonable expectation. Canteen on Carothers and the Berry Farms corporate campus both landed outside the protected core in the same general window. Land outside the overlay remains the path of least resistance for large-scale development in Franklin.
Does a project sitting outside the historic overlay affect resale value differently than a home inside it? It can. A property inside the overlay benefits from a hard cap on new competing supply nearby. A property just outside it competes in a market where the city can approve additional density at any time, which is worth factoring into how you think about long-term appreciation versus near-term convenience.
If you're trying to figure out which side of Franklin's overlay line actually fits what you want out of downtown living, that's exactly the kind of question we help buyers work through every week. Reach out to Dana Rector and we'll walk the map with you before you fall in love with an address.
