Home repair in Charleston, SC

Charleston homes at a glance

Median year built

1995

Built before 1960

19%

Built since 2000

45%

Owner-occupied

56%

Median home value

$509,700

Main heat

Electric, 73%

Source: U.S. Census Bureau, American Community Survey 2024 1-year estimates

What Charleston’s housing means for repairs

Charleston's median home dates to 1995, but that number hides two very different cities. About 19% of homes predate 1960, many of them Charleston single houses with side piazzas on the peninsula, built of heart pine on brick piers. About 45% went up after 2000, mostly in West Ashley, James Island, Johns Island and Daniel Island.

Detached houses make up 48% of homes, and 56% are owner-occupied. Electricity heats 73% of homes, usually with heat pumps. Older homes sit on raised foundations and crawlspaces, which brings moisture and termite problems, and historic district rules shape what you can change on the outside. The median home value is $509,700.

Weather that wears on Charleston homes

Charleston is low, hot and humid, on a peninsula between the Ashley and Cooper rivers. Hurricane season runs June through November, and Hugo in 1989 still shapes building practice. King tides and heavy rain flood low streets on the peninsula several times a year. Humidity soaks crawlspaces, rots wood porches and grows mold. Formosan and native subterranean termites are active. Salt air corrodes metal roofs, fasteners and AC coils. The city also sits in a known seismic zone, and the 1886 earthquake is why many older brick buildings have earthquake bolts.

Common repairs in Charleston

• Piazza and porch repair

  Wood decking, columns and railings on piazzas rot in the humid air.

• Crawlspace and floor joist repair

  Damp crawlspaces rot joists and sills and invite termites.

• Heat pump repair

  Heat pumps run most of the year and salt air corrodes coils.

• Roof and flashing repair

  Storms and salt air wear out roofs and flashing.

• Rotted exterior trim

  Window sills, fascia and siding rot on older homes.

What these repairs cost

The middle half of Runhome repair estimates nationwide for each kind of job. Your price depends on the scope of the work.

Fix guides for Charleston homeowners

• Porch support column is crumbling at the base

  Charleston piazza columns rot at the base from rain and humidity.

• Painted wood is rotten and crumbles when you press it

  Wood trim on older Charleston homes rots in humid weather.

• Bathroom floor is soft and spongy underfoot

  Damp crawlspaces soften floors in Charleston homes.

• Roof leaks in one spot and stains the ceiling below

  Storm rain finds weak spots in Charleston roofs.

Seasonal checklist

Hurricane season

Clear gutters, secure loose shutters and trim tree limbs near the roof.

Summer

Check crawlspace vents and vapor barriers, and run a dehumidifier if needed.

Spring

Watch for termite swarms and schedule an inspection.

Common questions

Do I need approval to repair my historic Charleston house?

Exterior changes in historic districts often need Board of Architectural Review approval. Repairs that match existing materials may be simpler. Check with the city before work begins.

How do I protect my Charleston crawlspace from moisture?

A vapor barrier, sealed vents and a dehumidifier help. The right setup depends on how often the area floods.

What makes piazza repair cost more in Charleston?

The amount of rot, whether columns need to be replaced, and historic district material rules.

Neighborhoods served

• Daniel Island
• West Ashley
• Ansonborough
• Harleston Village
• Wagener Terrace
• Cannonborough
• French Quarter
• South of Broad

Other South Carolina cities

• Home repair in Columbia