Daniel Island and Cainhoy: what the city said about growth, traffic and new homes

By Brandon · October 21, 2026

At the city's State of Our City meeting for Daniel Island and the Cainhoy Peninsula, the mayor laid out how many more homes can still be built, what the city is doing about Clements Ferry and I-526, and the new rules that could slow development. Here is what was said, what it means for homes on both sides of the Wando, and what to watch.

The City of Charleston held its State of Our City meeting for Daniel Island and the Cainhoy Peninsula this month and posted the video on October 21. Mayor William Cogswell spent most of the hour on traffic, residents' top concern in the city's survey, and growth, which ranked third. Here is what the city said, sorted by what matters for homes, with our own numbers alongside.

How many more homes are coming

Daniel Island is close to done. The island was planned with a hard cap of 7,500 homes. The mayor said it is at about 7,045, and there may be land for only 50 or 60 more. "The cap is the cap. It is not going up." For buyers, that means nearly all homes for sale on the island from here on will be resales, not new construction.

Cainhoy is just getting started. Point Hope, on the Cainhoy Peninsula, has a development agreement from 1996 that allows up to 18,000 homes. The mayor said those are vested rights under South Carolina law, and the city can't take them back without facing damages claims. But he said wetlands on the property and the city's stormwater rules put the realistic number "somewhere under 10,000," and that even the developer would likely agree 18,000 isn't realistic. About 1,000 homes are built so far.

Put those together and the picture is lopsided: the island is nearly full, and the peninsula could add several thousand more homes over the coming decades. He also said the figure of 900 possible docks on the Point Hope property overstates what the state would likely permit.

New rules that could slow building

• Stormwater. In flood-prone areas, new projects must improve stormwater runoff by 20%, not just avoid making it worse. The mayor called it the strictest standard in the state.
• A tougher traffic review, in the works. The city already studies a project's own driveways. It is working with its lawyers on a stricter interim review modeled on its stormwater rules: staff would also look at nearby intersections, and if those are failing, the project would wait until they aren't. The mayor said this is "threading the legal needle" while the city waits for a state law.
• "Concurrency" at the state level. A bill the city supports in Columbia would let local governments require roads and other infrastructure to be in place before approved homes are built. It doesn't take away what an owner may build; it controls when.
• Buying land so it isn't built on. The mayor said the city has closed on about 4 acres of the Mikasa tract, just outside the Point Hope entrance, that could have held 80 apartments, and is working to buy about 24 more acres zoned for substantial development. It plans a fire station, a police station and a public works facility there instead.
• Greenbelt money. The mayor said he supports using Greenbelt funds to buy down development rights on the peninsula, paying owners to build fewer homes than they're allowed. He noted it has been used less there than in other parts of the city.

Each of these works the same direction: fewer homes, or homes built more slowly, than the paper rights allow. How much they actually change the pace at Point Hope is not yet known, and the traffic review in particular may be tested in court.

Traffic: Clements Ferry, I-526 and Highway 41

The mayor said traffic on Clements Ferry Road is up 54% since 2015. SCDOT's own traffic counts back that up. On the busiest stretch, between I-526 and Jack Primus Road, the average day went from 25,700 vehicles in 2015 to 39,600 in 2025, up 54%. Farther north, between Jack Primus Road and Cainhoy Road, it rose 75% (13,800 to 24,100). Those counts are vehicles a day in both directions.

The I-526 bridge itself has grown more slowly. Between Clements Ferry and the Daniel Island exit, it went from 55,200 vehicles a day in 2015 to 64,500 in 2025, up 17%, and was lower in 2025 than in 2024. The growth is on Clements Ferry, which serves the area where new homes are being built. The road has been widened; the city says the choke points now are where it meets I-526 and Highway 41.

• Six new signals on Clements Ferry are planned, mostly helping Point Hope residents. Clements Ferry is a state road, so SCDOT installs each light only once traffic counts there meet its standard. The signals are mostly paid for by developers.
• Choice toll lanes on I-526. Replacing or widening I-526 has been priced so high that, in the mayor's words, the odds of it happening in most residents' lifetimes were "low to zero." A state law passed this year now allows private companies to build and run optional toll lanes, which the mayor said Florida, Georgia and Tennessee have begun using. Drivers could stay in the free lanes or pay to use the new ones. The mayor named the Daniel Island bridge, Long Point Road to West Ashley, and the I-26 interchange as candidates. No timeline was given.
• Highway 41. Most of its traffic starts in Mount Pleasant. The mayor pointed to Mount Pleasant's recent vote to preserve the Republic tract, which he said could have held about 400 homes near the bridge, as an example of the two cities working to limit growth that feeds the same intersection. A roundabout is planned at the 41 intersection.
• Smaller fixes on the island. Flashing beacons at Island Park Drive and Central Island; curb extensions and beacons at Seven Farms Drive and Pier View, with construction expected to start within weeks; a roundabout at Fairchild; and a larger Berkeley County roundabout at Seven Farms Drive, which is funded.

Other things that affect owners

• Your city tax bill. For an owner-occupied home (the 4% rate), about 60% of the city's share goes to police and fire. Most roads are state or county, not city.
• Fire stations and insurance. Fire Station 18 on Daniel Island has been renovated (about $1.5 million, the mayor said), the city's public safety committee approved moving ahead on Fire Station 20 near I-526, and another is planned for the Mikasa tract. The mayor said response times are "not bad, but not great," and noted they affect homeowners' insurance.
• 62 donated acres. The Brumley family or the Daniel Island Company (the mayor named both) gave the city 62 acres on the south end of the island about three months ago. It will be green space; the city plans a resident survey on whether it becomes a park, playing fields or something else.
• Waterfront parking. The new marina hotel has its own deck. Many nearby office lots have shared-parking easements the public can use, and the city plans signs to say so. It is also looking at more street parking, parking at the city recreation center and a possible community pier.
• Flooding and trails. Governor's Park drainage is done, and a New Creek trail and boardwalk is planned. The wooden bridge on the Waterfront Park trail, closed since May, was expected to start repairs within about 30 days.
• Enforcement. About 1,600 traffic stops on Clements Ferry since April, 23 e-bike stops since September 1, and 45 new police officers in the coming budget.

What the market looks like now

The mayor put the median Daniel Island home at about $1.1 million. The figures we track are higher for the island itself and lower once Cainhoy is included, because they cover different areas:

• Daniel Island (Zillow, September): typical home value about $1.47 million, up about 3.7% in a year and about 23% in three years.
• ZIP 29492, Daniel Island plus Cainhoy: typical value about $982,000, up 1.7% in a year. Median sale about $966,000.
• Conditions: Daniel Island's Tide Gauge reads 40, at the low end of normal, up from 34 a year ago. More homes are for sale than a year ago (127 in Redfin's three-month window, up from 86), but sales are up too, so supply is about 3.8 months' worth, down from 4.3 a year ago.

A fixed cap on the island and a slower, more regulated pace on the peninsula both limit how fast new homes arrive. That doesn't guarantee higher prices. Interest rates, insurance and the wider Charleston market still matter more month to month.

What to watch

• The concurrency bill in the next legislative session, and whether the city's interim traffic review holds up if a developer challenges it.
• Point Hope's next phases: whether any are delayed by the new traffic review.
• Any I-526 toll-lane proposal from SCDOT or a private partner. That would be the first real date for relief on the bridge.
• Greenbelt purchases on the Cainhoy Peninsula. Each one is homes that won't be built.

This is a summary of what the city presented, with our data added. It isn't an endorsement of the city's plans or a recommendation to buy or sell. The full meeting is on the City of Charleston's YouTube channel, and the city has promised written answers to submitted questions within 10 days.

— Brandon

Sources: City of Charleston, "State of Our City – Daniel Island & Cainhoy," posted October 21, 2026 (video); figures attributed to the mayor are as stated at the meeting. Traffic counts: SCDOT annual average daily traffic, stations 269, 270 and 2518 (Berkeley County), via the BCDCOG 10-year traffic count report (2016–2025) and its Berkeley County 2015–2024 table. Home values: Zillow Home Value Index (September 2026). Sales, supply and Tide Gauge inputs: Redfin Data Center, three-month windows ending September 2026. General information and education only; not advice.

See it in the data

• Daniel Island: prices, sales and Tide Gauge
• ZIP 29492 (Daniel Island and Cainhoy)
• Charleston town page

The Beacon shows the math and the questions worth asking. It is general information, not advice about any one person's decision.

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