Mudjacking in Jacksonville, FL: How It Works and What It Costs (2026)
Mudjacking is one of the oldest and still most common ways Jacksonville homeowners fix a sunken driveway, sidewalk or patio slab. Because much of Duval County sits on loose coastal sand with a water table that rises close to the surface near the St. Johns River and the Intracoastal, flatwork settles often, and mudjacking, sometimes called slabjacking, offers a lower-cost way to lift the existing slab back into place instead of tearing it out and repouring. This guide explains how mudjacking works, where it's used most in Jacksonville, what it costs, and when polyurethane foam leveling might be the better call instead. See the full metro foundation guide at /foundation/florida/jacksonville for permit and licensing detail, and get matched with a vetted local pro at /get-matched/foundation.
By Homeowner Henry · Foundation Repair · Published August 28, 2026 · 7 min read
How mudjacking works
Mudjacking pumps a heavy slurry of soil, sand, cement and water through holes drilled roughly 1 to 2 inches wide into the sunken slab. The weight and pressure of the slurry lift the concrete back to level while also filling the void underneath left by soil settlement, and the holes are patched with mortar once the job is done. It's a well-established, decades-old technique that remains widely used across Jacksonville's older and newer neighborhoods alike.
Why mudjacking is common in Jacksonville specifically
Jacksonville's sandy soil settles and, in some spots, washes out entirely once saturated by heavy rain or storm surge, leaving voids under driveways, garage aprons and sidewalks. Mudjacking's slurry mix is heavy enough to fill those voids completely rather than just lifting the visible surface, which makes it a practical choice for larger slabs like full driveways and pool decks where cost per square foot matters.
Older neighborhoods like Springfield, Riverside and Avondale, with decades of utility trenching and backfill settlement, and newer graded subdivisions in Mandarin and Nocatee both see steady mudjacking demand, just for slightly different underlying reasons: aging fill in one case, uneven cut-and-fill grading in the other.
Mudjacking versus polyurethane foam in Jacksonville
Mudjacking typically costs $3 to $6 per square foot in the Jacksonville metro, less than the $5 to $8 per square foot typical for polyurethane foam injection, and it's often preferred for large-area jobs like full driveways where the price difference adds up quickly. Foam cures faster, at around 15 minutes versus a longer cure and cure-load wait for mudjacking's slurry, and it's lighter, which can matter on soil that's already loose or saturated near the water table.
For a homeowner near the St. Johns River or a tidal creek where the water table sits high, some contractors will recommend foam specifically because its resistance to water and lighter weight is less likely to encourage renewed settling in soil that's already borderline. For a straightforward driveway settlement issue on higher, drier ground, mudjacking often remains the more cost-effective choice.
What mudjacking costs in Jacksonville
Expect roughly $3 to $6 per square foot for mudjacking work. A typical sunken driveway section might run $500 to $1,500, while a full driveway or larger pool deck can run $2,000 to $5,000 depending on square footage, the number of holes needed, and how much void space has to be filled underneath.
Get a written quote specifying price per square foot and an estimate of hole count, and ask whether the quote assumes a single lift or whether repeat settling has historically required a second treatment on similar jobs in your area.
Hiring a mudjacking contractor in Jacksonville
Verify the contractor's Florida DBPR license status through the license lookup at myfloridalicense.com, and ask whether the crew works with both mudjacking and foam so you're getting an honest recommendation rather than a one-size-fits-all pitch. For slabs near seawalls, docks or bulkheads along the Intracoastal or St. Johns River, ask whether the settlement could be tied to erosion behind the wall itself, since that needs its own fix before or alongside leveling the slab.
Typical cost ranges
| Mudjacking (per square foot) | $3 - $6 |
| Polyurethane foam injection (per square foot) | $5 - $8 |
| Sunken driveway section | $500 - $1,500 |
| Full driveway or large pool deck | $2,000 - $5,000 |
| Sidewalk or steps leveling | $400 - $1,200 |
| Void filling under slab (per project) | $600 - $2,500 |
Ranges are general estimates gathered from homeowner-reported quotes, not an offer or a quote for your project.
Common questions
How much does mudjacking cost in Jacksonville?
Mudjacking in Jacksonville typically runs $3 to $6 per square foot. A sunken driveway section might cost $500 to $1,500, while a full driveway or large pool deck can run $2,000 to $5,000.
Is mudjacking or foam leveling better in Jacksonville?
Mudjacking generally costs less per square foot and works well for large slabs on higher, drier ground. Polyurethane foam is lighter and more water-resistant, which some contractors prefer for lots near the St. Johns River or Intracoastal where the water table sits high.
How long does mudjacking last in Jacksonville's sandy soil?
Mudjacking can last many years, but because Jacksonville's sandy soil can continue shifting when saturated, repeat settlement is possible if the underlying void wasn't fully filled or if drainage issues continue feeding erosion under the slab.
Do I need a permit for mudjacking in Jacksonville?
Mudjacking on existing driveways, sidewalks and patios is typically considered maintenance and usually doesn't require a permit, but confirm with the City of Jacksonville Building Inspection Division at 904-255-8500 if the slab is structurally connected to the house or near a seawall.
Can mudjacking fix a slab near a Jacksonville seawall or dock?
It can lift the visible slab, but if erosion behind a failing seawall is the real cause of the settlement, the seawall needs its own inspection and repair, or the slab is likely to settle again after mudjacking.
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