Two homes sold in Mount Pleasant last year, both inside town limits, both closing within months of each other. One sat in the older, wooded, close-to-the-water section south of the Isle of Palms Connector. The other sat in the newer subdivisions to the north. The southern half closed 2025 with a median sale price of $1.2 million. The northern half closed at $892,500. Sales volume rose in both places, by 9 percent in the south and 10 percent in the north, according to Charleston Trident Association of Realtors data reported by the Post and Courier at the start of 2026.
If you are shopping Mount Pleasant right now, you have probably already seen a single median price quoted somewhere and assumed it described one market. It does not. The Town of Mount Pleasant's permit ordinance is one factor to consider: it limits how many new homes can be built here through 2029.
Two Numbers, One Town
Here is what that 2025 breakdown actually looked like:
| Submarket | 2025 Median Sale Price | Change in Homes Sold vs 2024 |
|---|---|---|
| Lower Mount Pleasant (south of the IOP Connector) | $1.2 million | Up 9% |
| Upper Mount Pleasant (north of the IOP Connector) | $892,500 | Up 10% |
That is a $300,000-plus gap inside a town most buyers describe as one neighborhood. Whitley Boyd, broker-in-charge of Carolina One's Mount Pleasant office, told the Post and Courier that the real gap is even wider than the raw numbers suggest, and that it reflects genuinely different conditions on each side of the line rather than a simple geographic preference. Jimmy Farrell, co-owner of The Farrell Group, described the same period as one where sellers still hold the advantage on paper, but where homes are taking longer to move and appreciation has slowed well below what it was five years ago.
Zoom out further and the town-wide figure gets stranger. In the same reporting period, single-family sale prices across Mount Pleasant as a whole rose by 6.7 percent and 5.3 percent on two different measures, even as both halves of the town recorded price declines in their own submarket data. A number like that only makes sense once you stop treating Mount Pleasant as a single market and start asking what is actually constraining supply in each half.
How the Permit Allocation System Works
Since January 2019, Mount Pleasant has operated under a Building Permit Allocation System, an ordinance that caps how many new single-family and multifamily permits the town will issue over a fixed period. The current cycle, extended by Town Council in 2023, runs through 2029 and limits the town to 2,400 new single-family permits and 500 new multifamily permits for the entire five-year window, according to the town's own published ordinance.
To put that in perspective, the town issued 1,407 new residential permits in 2018 alone, the year before the caps began. By 2020, under the new system, that number had fallen to 520, a growth rate of just 1.29 percent, well below the town's own 2.1 percent target, per Post and Courier reporting at the time.
According to The Post and Courier, a separate seven-year moratorium on new apartment, condo, and townhome construction ran alongside the permit caps from 2017 until it expired at the end of 2024. Letting the moratorium lapse did not open the floodgates. Michele Reed, the town's Planning, Land Use and Neighborhoods director, told the Post and Courier after the expiration that there is essentially no undeveloped multifamily-zoned land left in Mount Pleasant, meaning any new multifamily permits used going forward will most likely come through mixed-use redevelopment rather than new subdivisions.
"There's really no multifamily zoning available. Everything's developed."
That is Reed describing the ceiling buyers and builders are working under right now, not a temporary dip in inventory that will correct itself next spring.
The Two Subdivisions in Focus
The Post and Courier reported that the permit system has exactly two subdivision carve-outs. Carolina Park and Liberty Hill Farm are excluded from the Building Permit Allocation System entirely, because both communities operate under older development agreements with the town that predate the ordinance. That difference is one point to consider when comparing Upper Mount Pleasant with the rest of town. While most of Mount Pleasant is drawing from a shrinking, town-wide permit pool, Carolina Park keeps building on its own schedule. That steadier flow of new inventory helps explain why the northern corridor can post a lower median and faster sales at the same time that the rest of the town tightens.
Lower Mount Pleasant has a different development profile. Old Village and the streets closest to Shem Creek were largely built out decades ago. The land there was never available for new single-family construction in the volume the permit system was designed to slow down. Scarcity there is a function of geography and history, not ordinance. Outside Carolina Park and Liberty Hill Farm, the current allocation cycle is scheduled to run through 2029.
What the Workforce Housing Math Adds
The permit system includes an exemption. Gregorie Ferry Towns, a townhome development off Highway 41 with units listed under $300,000, was the only attainable housing project to come online during the entire seven-year moratorium, and it sold out quickly.
Housing For All, a nonprofit tracking the issue, estimates the town needs roughly 1,000 more affordable homes and apartments to serve workers earning between $101,600 and $152,600, based on 2023-24 Census figures putting the town's median household income near $127,000. Meanwhile, the long-run appreciation curve keeps climbing. When the first homes in I'On Village sold in 1998, they went for around $160,000. Those same homes are worth roughly ten times that today. The permit system is one factor in the discussion of housing supply and entry-level prices.
None of this means the town has stopped investing in itself. In August 2025, Mount Pleasant completed a roughly $3 million renovation of the Shem Creek shrimp docks, rebuilding the boardwalk, pier, and processing facility that keep the town's commercial shrimping fleet on the water. It is public infrastructure, not private housing supply, and it is a reminder that the working waterfront identity buyers pay a premium for in Lower Mount Pleasant is something the town is actively maintaining, permit caps or not.
What This Means If You're Comparing Neighborhoods Right Now
Before you compare a listing in Mount Pleasant to one in Summerville or on Daniel Island, it helps to ask a few questions that a median price alone will not answer:
- Is the subdivision inside or outside the permit cap? That distinction can show up in how quickly new inventory appears.
- Is the price softness you are reading about concentrated in a specific bracket? A town-wide headline can mask two submarkets moving in opposite directions, or moving by very different margins, in the same year.
- Does the property sit in a zone with little undeveloped land left? If so, its value is being shaped more by geography than by any policy that could change in 2029.
A permit cap that runs through 2029 is not a forever rule, but the remaining time is long enough to shape a buying decision made today. Understanding which side of that line a specific address falls on tells you more about its likely price trajectory than almost any other single fact available before you write an offer.
A Few Questions Worth Settling Early
Will the cap simply disappear in 2029? The current allocation cycle runs through 2029, but The Post and Courier reported that Mount Pleasant has extended similar limits before, including a permit system that ran from 2001 into 2008. Whether the town lets the current caps lapse or renews them again is a decision for a future Town Council, not a guaranteed reset date.
Does this affect condos the same way it affects single-family homes? Not quite. Multifamily permits are capped separately and far more tightly, at 500 for the full five-year cycle versus 2,400 for single-family homes, and the town's planning director has said there is little multifamily-zoned land left to use them on.
If you are trying to figure out what a specific Mount Pleasant address is really worth, given which side of the permit line it sits on and how that has shaped its recent sales history, that is exactly the kind of question worth asking someone who tracks this market address by address. Amy Bolan has spent decades doing that work across the Charleston tri-county area. Reach out for a free Charleston home valuation before you decide what the median price actually means for your move.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
