You found the house. Maybe it’s a brick ranch in West Ashley or a townhome off Highway 41 in Mount Pleasant. Now comes the part a lot of buyers rush through: writing the offer.

In Charleston, an offer is more than a price. It’s a set of terms that decides how much money you put at risk, how long you have to inspect, and how the seller sizes you up against the next buyer. Below is how the pieces work locally and how to put together an offer that gets taken seriously without giving up your protections.

Start With What the Numbers Say About This Home

Price is still the first thing a seller reads, so base it on the property, not a headline. According to the Charleston Trident Association of Realtors, the regional median sales price in September 2026 was $425,000. Homes took an average of 55 days to go under contract, and sellers received about 95.6% of their original list price. There were roughly 3.6 months of inventory on the market.

Those figures cover the whole tri-county area, so they only tell you so much. What matters more is how this specific home compares. Ask your agent for closed sales in the same subdivision or within about half a mile, ideally from the last 90 days. Then look at the listing history. A home that has sat for 70 days with one price cut is a very different negotiation than one that hit the market last Thursday with showings booked back to back.

Mortgage rates also climbed back above 7% in late September, according to Freddie Mac data cited in the same report. Some buyers are waiting on the sidelines because of it, which can give you more room on a home that has been sitting.

Earnest Money vs. the Due Diligence Fee

This is where buyers relocating from other states get tripped up. Most Charleston-area offers are written with a due diligence period, and many include two separate payments.

Earnest money is a good-faith deposit, commonly around 1% to 3% of the price. It is held in escrow by the closing attorney or a brokerage, not by the seller, and it gets credited toward your costs at closing.

The due diligence fee, when one is used, is paid directly to the seller and is generally non-refundable. In exchange, you get a set window to inspect the home, collect repair quotes, review HOA documents, and confirm you can insure it. If you back out during that window, you typically lose only the due diligence fee and get your earnest money back. Walk away after the window closes without a reason the contract allows, and the earnest money can be at risk too.

Both amounts are negotiated, and the exact refund rules come from the contract language. Read those clauses with your agent and closing attorney before you sign.

Choose Terms That Protect You and Still Compete

Sellers weigh certainty almost as heavily as price. These are the terms that tend to move the needle:

• Due diligence length. Ten to fourteen days is common. A shorter window looks stronger, but only if you can actually schedule a general inspection, a CL-100 wood infestation report, and any specialty checks (roof, HVAC, crawl space, or a sewer scope on older downtown and West Ashley homes) in that time. Call inspectors before you submit.
• Insurance quotes. Get homeowners and flood quotes during due diligence, not after. On the coast, a premium can change the math on a house.
• Financing and appraisal. A full pre-approval from a lender who closes regularly in the Lowcountry carries more weight than an online pre-qualification. If the appraisal could come in low, decide ahead of time whether you could cover a gap.
• Closing date and possession. Ask the listing agent what the seller needs. A later closing or a short rent-back costs you little and can beat a higher offer.
• Seller concessions. With homes taking longer to sell, asking for help with closing costs or a rate buydown is reasonable. Treat it as part of your net price, not an extra.

Put It Together and Present It Well

South Carolina is an attorney state, which means a licensed attorney oversees your closing. Pick one early so the title search can start the day your offer is accepted.

When you submit, include your pre-approval letter, proof of funds for the down payment and deposits, and a short summary of your terms from your agent. Set a reasonable response deadline, often 24 to 48 hours. If the seller counters, look at the whole picture: price, concessions, timing, and risk. A $5,000 bump in price paired with a $5,000 closing cost credit is close to a wash for many buyers.

Also ask for the seller’s property condition disclosure statement as early as you can. South Carolina requires sellers of most homes to provide one, and it tells you what your inspector should look at first.

Ready to Write Your Offer?

A strong Charleston offer pairs a well-supported price with clear, realistic terms. Know your comps, understand exactly what money you’re putting at risk, line up inspectors early, and give the seller reasons to believe you’ll close. If you have your eye on a home right now and want help structuring an offer that fits the property and your budget, reach out. We’ll go through the numbers together before you sign anything.

Most homes fail slowly, and in the Lowcountry they fail from the outside in. Charleston averages somewhere between 48 and 51 inches of rain a year, relative humidity peaks above 80 percent in August, and much of the metro sits on sandy soil with the water table only two or three feet below grade. That combination is hard on houses in ways a maintenance checklist written for Ohio will never mention.

If you already own here, or you are about to close on something, these are the four maintenance issues that actually cost Charleston homeowners money.

Start Under the House, Not On the Roof

The crawl space is where Charleston homes quietly come apart. A traditional vented crawl space pulls humid summer air underneath the house, that air hits cooler surfaces, and it condenses. The symptoms show up upstairs: a musty smell in one closet, floors that feel soft near an exterior wall, an air conditioner that cools the house but never quite dries it out.

Encapsulation is the permanent fix. In South Carolina it generally runs about $2.70 to $7.20 per square foot, with statewide averages landing near $5,000. Straightforward Charleston jobs on a smaller, clean, accessible crawl space tend to fall in the $3,000 to $5,000 range. Larger homes, or crawl spaces that need repair work first, move toward $6,000 to $10,000. Local jobs also frequently require a drainage system and a sump pump, because the water table sits high enough to push moisture up through the soil even in a dry stretch.

Before you spend that, do the cheap things. Confirm the vapor barrier covers the entire soil floor and is sealed at the seams and around the piers. Grade the soil so it slopes away from the foundation. Extend downspouts four to six feet out from the house. And after any storm surge event, get under there and look, because salt water corrodes fasteners, HVAC components, and structural connectors far more aggressively than rainwater does.

Termites Here Are a Different Animal

Clemson has identified Charleston County as one of the most active Formosan termite zones in South Carolina. Formosan colonies can number in the millions and do structural damage in months rather than years. Native subterranean termites are active here too, and the warm, wet climate keeps both working nearly year round.

That is why the CL-100 matters. It is South Carolina’s official wood infestation report, filled out by a licensed inspector, and it documents visible termite evidence along with moisture and fungus damage. It is not required by state law on every transaction, but in practice most sales need one, because the contract, the lender, or both will ask. VA, FHA, and USDA loans effectively require a clear report before funding. Notice that the same form covers insects and moisture. In Charleston those are one conversation, not two.

A termite bond typically costs $500 to $2,000 to set up depending on square footage and any existing activity, then renews annually. Read yours closely. There is a real difference between a retreat-only bond and a retreat-and-repair bond, and you want to know in writing whether Formosan termites are covered by name. Keep the coverage continuous. A lapsed bond is expensive to restart and complicates a sale later.

Salt Air Is Working On Everything Metal

Ocean air leaves a thin salt film on outdoor equipment. That film holds moisture against metal and corrodes it roughly twice as fast as it would inland. This is not only a beachfront problem. Homes several miles from the water see it too.

Rinse your outdoor condenser with fresh water monthly through the summer, using a garden hose and never a pressure washer. Ask your HVAC company to use a pH-neutral coil cleaner rather than a generic degreaser, which can eat the fins. If you live on the islands or close to the water, move to twice-yearly service instead of an annual checkup. Then look at the rest of it: exterior light fixtures, hinges, garage door hardware, gutter fasteners, and outdoor kitchen components all corrode on the same schedule.

Aim for 40 to 60 percent indoor humidity. If the house cools down but still feels clammy, the system may be oversized and short-cycling, which means it hits temperature before it removes much moisture. A variable-speed system or a whole-home dehumidifier tied into the ductwork solves that far better than dropping the thermostat.

A Maintenance Calendar That Fits the Lowcountry

• Spring (March to May): Termite swarm season. Watch for discarded wings on windowsills and around door frames. Service the HVAC before the first genuinely hot week. Clear gutters ahead of summer storms.
• Summer (June to September): Peak humidity and hurricane season. Rinse the condenser monthly, check crawl space humidity, and trim limbs back from the roofline before a storm is named, not after.
• Fall (October to November): Inspect the roof and flashing once the season winds down. Reseal exterior wood and window trim after a summer of UV and rain. Second HVAC service.
• Winter (December to February): The driest stretch of the year and the best window for crawl space work, encapsulation, and exterior painting. Contractors are less booked, too.

None of this is glamorous, and none of it shows up in listing photos. But moisture and insect damage are the two things most likely to turn into a repair request during a Charleston transaction, and they are the two things most likely to be quietly getting worse while nobody looks. If you are buying, read the CL-100 as a real document instead of a formality. If you are selling, fix the moisture note before an inspector writes it down for you.

Have a question about a crawl space finding, a termite letter, or how a repair item might affect your sale price? Reach out and let’s talk it through before it turns into a negotiation.