Signs Your Lowcountry Mobile Home Needs Releveling, and How to Check

September 2, 2026

A door that sticks, drags, or won’t latch in a mobile home is, far more often than not, a leveling problem, not a door problem. As support piers settle into the Lowcountry’s wet sand and shrink-swell clay, the steel frame under the home flexes, door openings rack out of square, and the door stops fitting the hole it was hung in. Plane the door and you’ve treated the symptom; the frame keeps moving. A relevel fixes the cause, runs $450 to $800 for a singlewide and $750 to $1,400 for a doublewide across Berkeley, Charleston, Dorchester, and Colleton counties, and takes about a day.

Here’s how to read the signs, run the checks yourself, and know when to make the call.

Why the door is the messenger

A manufactured home rides on two steel I-beams (plus a center row on doublewides), supported every few feet by piers: block stacks on footing pads. The home was built square on a flat factory floor; it stays square only as long as those piers hold it in one plane.

When a pier drops even half an inch, the frame above it deflects. Walls that were plumb lean by a fraction of a degree; door openings that were rectangles become parallelograms, subtly, invisibly, except that doors are precision-fit objects. The door is the first thing in the house sensitive enough to report the change. That’s why “sticky door” is such a common search, and why it deserves to be treated seriously rather than as a trim problem.

The usual progression, if nobody intervenes: one door rubs seasonally, then several doors stick year-round and one won’t latch, then windows bind in their tracks, then hairline cracks open at drywall joints over doorways, then floors develop a visible slope or a bounce, then, on a doublewide, the marriage-line seam gaps at the ceiling, then skirting buckles as the home comes down onto it. Each stage is more expensive than the one before, because settling compounds: a low pier crushes its shims and caps and keeps going.

Why this happens so much around Charleston

The ground. The Lowcountry’s manufactured homes, from the parks along US-52 in Goose Creek and Dorchester Road in North Charleston to the owned-land homes out US-17A toward Cottageville and up US-78 toward St. George, sit on coastal-plain soil over a water table that’s a few feet down in a dry year and at the surface in a low spot after rain. That soil misbehaves two ways:

Sand sinks. On the sandy ridges and the flat sandy ground of the lower counties, sand compacts under concentrated pier loads, and when it’s saturated it migrates out from under the pads. Every soaking summer works the piers a little; a serious rain year works them a lot. The October 2015 flood, 25.35 inches on Summerville in six days and a 24-hour record at the Charleston airport, is the kind of event that shows up months later as doors that stick and floors that slope.

Clay walks. In the clay pockets of Dorchester and inland Berkeley, and across the marl ridge through St. George and Harleyville, the ground swells when it’s wet and shrinks when it dries. Pads on clay rise a little every wet winter and drop a little every dry August, tilting slightly each time. Owners notice seasonal symptoms, doors that stick in one season and free up in another, and write it off as the house breathing. It isn’t; each cycle walks the pads further out of plane.

Result: on this soil, a home needs releveling roughly every 3 to 5 years. Not because anything was done wrong. Because sand is sand and clay is clay. Homes on high, well-drained pads stretch the interval; homes on low wet lots shorten it. Homes that were recently moved onto unprepared ground shorten it most of all, because fresh piers on uncompacted soil consolidate hard in the first two or three wet seasons. If your doors are sticking and the home hasn’t been releveled in five-plus years, the diagnosis is close to a formality.

Check it yourself: twenty minutes, no tools you don’t own

You can’t do the fix yourself (more on that below), but you can do a solid preliminary diagnosis:

1. The marble test. Set a marble or golf ball on the floor in several rooms, especially where doors stick. If it rolls the same direction consistently, that end of the home is low. A phone’s bubble-level app on the floor works too; check several spots and note the pattern.
2. Audit every door and window. Sticking doors clustered at one end or one side of the home point to settled piers in that zone. A single problem door with everything else fine might genuinely be hinges or humidity swelling; manufactured-home doors do swell in Lowcountry summer air. A pattern is the tell.
3. Look at the cracks. Hairline drywall cracks radiating from the top corners of door and window openings are racking signatures. Note which rooms.
4. Walk the skirting. Outside, look for panels bowing, buckling, or popped from their tracks with no impact damage. That’s the home coming down onto skirting that was cut to its original height. Skirting deforming on one side is practically a map of which piers dropped.
5. Doublewide owners: check the seam. Look along the ceiling line where the two halves join. A gap opening there, or a ridge in the floor along the same line, means the marriage-line piers are settling, and that one shouldn’t wait.
6. Look at the straps if you can see them. Through an access panel, a strap you can push sideways easily by hand is slack. Slack straps are a settling symptom too, and on a Wind Zone II coast they’re the one with the highest stakes; see tie-downs & anchors.

What you shouldn’t do is crawl under and start jacking. Beyond the obvious, 15,000-plus pounds of home, and the load must always ride on cribbing, never a jack alone, South Carolina licenses manufactured-home installation work, leveling included, through the LLR Manufactured Housing Board. The under-the-home fingerprints of DIY and handyman jobs are what our crew spends half its time correcting: shim stacks taller than HUD standards allow, scrap lumber for caps, piers lifted out of plane so far they cracked the ceiling.

What the fix involves, and what it costs

A proper relevel is a measured process, not guesswork with a jack. Our crew shoots every pier with a water level off a stable datum pier, so the frame’s actual shape is a set of numbers before anything moves. Hydraulic jacks on solid cribbing lift the low sections in small increments across multiple stations, and the gentle, distributed lift is exactly what protects your drywall. Each low pier gets rebuilt to tight contact with fresh hardwood shims. Then the whole frame gets re-shot to verify, and the anchor straps get re-tensioned, because a settled home always leaves them slack, worth caring about in four counties that are all Wind Zone II with Hugo in living memory. The full walkthrough is on the mobile home leveling page.

Costs, published because we publish everything:

Most sticking-door cases caught reasonably early land in the base relevel range and finish in a day: 3 to 5 hours for a singlewide, 6 to 8 for a doublewide. Homes that spent years settling usually add some pier and pad work; the free level check prices all of it, per pier, in writing, before anyone commits to anything. Full tables on the pricing page.

And the doors themselves? In most cases they simply start working again once the frame is back in plane. The parallelogram becomes a rectangle and the door fits its opening like it used to. Long-neglected settling sometimes leaves a door that needs re-hanging or drywall cracks that need patching, but that’s cosmetic cleanup, not structure.

The bottom line

A sticking door in a Lowcountry mobile home is the cheapest warning you’ll ever get: the home telling you, politely and early, that its piers are moving. Answer it at the sticky-door stage and you’re looking at a few hundred dollars and one day. Ignore it through a couple of wet summers and you’re into pier rebuilds, strap retrofits, and maybe subfloor work when the torn vapor barrier nobody looked at joins the party.

The level check is free, it produces a pier-by-pier map of exactly where your home stands, and it comes with firm numbers instead of a pitch. If your doors have opinions lately, get the survey, and go back to not thinking about your piers for another few years.