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Foundation repair in Miami

Tell us what you are seeing at the property and a vetted local foundation contractor calls you back with a free quote. Call or send the form to start.

What working with us looks like

One Miami Contractor

Your property goes to a single Miami-Dade foundation contractor, who calls you back.

Free Quotes in Writing

The scope, the method, and the price on paper before anything is signed. The price quoted is the price paid.

Miami-Specific Answers

Limestone, fill, salt air, and the water table are what drive structural work here. Our guides cover all of it.

No Sales Pressure

Plenty of cracks turn out to be cosmetic. If that is the answer, that is the answer.

How It Works

From first call to a written number

Four steps. Nothing costs anything until you sign something.

  1. 01

    Describe what you are seeing

    Call or send the form with the property location, the age of the building, and what changed. Photos of a crack with something for scale next to it help more than anything else you can send.

  2. 02

    One contractor calls you back

    We connect the property with a vetted Miami-Dade foundation contractor, who calls to talk through the symptoms and set a time to look at it.

  3. 03

    Assessment and free quote

    The visit covers elevations, crack widths, drainage, and history. What follows is a written quote covering method, quantities, engineering if the scope needs it, and permitting.

  4. 04

    Read up before you decide

    Our guides cover Miami costs, underpinning methods, spalling, seawalls, and how permitting runs here. Take the time you need with the number in front of you.

Miami Is Not A Clay Market

Almost everything written about foundations assumes the wrong ground

Search for foundation advice and you will read about expansive clay that swells in the wet season and shrinks in drought, about hydrostatic pressure against basement walls, about frost heave. None of it applies in Miami-Dade. The USDA soil survey records a maximum shrink-swell potential of 5.2 percent anywhere in this county and a county-wide average under 0.2 percent, with no Vertisols mapped at all. There are effectively no basements, and it does not freeze.

What moves buildings here is different. Limestone at variable depth with soft pockets in it, imported fill that was never compacted properly, organic soil under neighborhoods built over former wetland, and water moving through some of the most permeable ground in the country. Diagnose a Miami house with a Dallas playbook and you will reach the wrong answer confidently.

Cross-section of a typical Miami house foundation and the ground beneath it A concrete slab with a thickened edge footing sits on compacted fill, over sand and marl, over oolitic limestone. The water table is drawn as a line only a few feet below the surface, well above the top of the limestone in many parts of Miami-Dade. CBS house, slab on grade Grade Compacted fill Sand and marl Water table Oolitic limestone (Miami Rock Ridge) Thickened edge footing
The usual Miami arrangement: a slab with a thickened edge footing bearing on fill and marl, with limestone below and the water table sitting between the two. Depths vary block to block, and how deep the rock is under a particular footing is the question a boring log answers.

Across Miami-Dade

The county's ground changes street by street

Miami-Dade holds 34 incorporated municipalities across roughly twenty feet of total vertical range, and where a property sits within that range shapes what is likely to be wrong with it. These are the patterns that repeat.

On the Miami Rock Ridge

The higher limestone ground running from North Miami Beach south and west toward Long Pine Key, eight to fifteen feet above sea level and over twenty in places. Rock is often shallow, deep settlement is uncommon, and the work skews toward concrete restoration on older buildings.

West of the ridge

Doral, Kendall, and the western suburbs sit on lower ground raised with fill. The soil survey maps more than 33,000 acres of human-transported material across urban Miami-Dade. Where that fill was not compacted in proper lifts, it keeps consolidating under load for decades.

On the barrier islands

Miami Beach and Key Biscayne carry the most severe salt exposure in the county. Florida's transportation design guidelines class structures within 2,500 feet of high-chloride water as extremely aggressive, and spalling dominates the caseload accordingly.

On canals and bay frontage

Seawalls are the structure that fails first, and they fail by letting soil out rather than by falling over. A dished patch in a waterfront lawn is nearly always material that has left through a joint, not a sinkhole.

In the low south of the county

Palmetto Bay, Cutler Bay, and the ground toward Homestead sit close to sea level with organic soils in the profile. Around sixteen percent of Miami-Dade is mapped as muck or peat, and settlement over it is slow and long-running rather than sudden.

In older multifamily buildings

Miami-Dade recertification and the state milestone inspection both produce engineer's reports with repair schedules attached. On a building of the relevant age, that schedule is usually dominated by concrete restoration.

Coverage runs across the county, including the smaller municipalities and the unincorporated areas. See the service area pages.

Measure First

A quote written before anything was measured is a guess with a price on it

Structural pricing follows quantities. On a piering job the number of piers and the depth to competent bearing set the cost, and those come out of an engineer's analysis of what is under the building, not out of a walk around it. That is why a proper assessment starts with an elevation survey, dated crack readings, and where the scope warrants it a boring log or a test pit.

It is also why a fair number of these conversations end without a repair. Plenty of the cracks people find turn out to be shrinkage or thermal movement in the stucco, and a wall that has not moved in three months of readings does not need piers. That is a good outcome, and saying so is part of the job.

A crack running the height of a white stucco wall, varying in width and stepping sideways partway down its length
Width, pattern, and change over time are the three things worth recording. A crack that tapers along its length means the two sides have rotated relative to each other; a uniform hairline usually does not.

What a written quote should set out

  • The method, and why that method rather than another
  • Quantities: pier count, spacing, depth or torque criterion, or square feet of concrete removal
  • What those quantities are based on: the survey, the boring log, the sounding
  • A unit rate for quantities beyond the estimate, so an overrun is arithmetic
  • Who carries the engineering, the permit, and the inspections
  • What gets put back afterward: concrete, pavers, stucco, planting
  • A payment schedule tied to milestones rather than to dates

The Miami cost guide covers what each of those lines usually comes to, and the cost estimator will size a job in about fifteen seconds.

Common questions

What does foundation repair cost in Miami?

It depends entirely on the scope, and the range is wide. Injecting a single crack runs $500 to $1,200. Lifting a dropped driveway or pool deck slab runs $1,400 to $6,500. Underpinning a settled footing with piers runs $9,000 to $35,000, with the pier count and the depth to competent bearing setting the number. An engineer's report and sealed drawings add $1,500 to $4,000 and come first, because nothing can be priced accurately without them.

Why would a house in Miami settle if there is limestone underneath?

Because the limestone is not at the same depth everywhere and it is not uniform. USGS describes the Miami Limestone as riddled with solution holes commonly filled with lime mud and sand, so the top of the rock is an irregular surface with soft pockets in it. Add imported fill that was never properly compacted, organic soil where former wetland was built over, and water moving fines out through permeable ground, and you get one footing dropping while its neighbor does not.

Which cracks in a block wall matter?

Width, pattern, and change over time. Fine vertical cracks in stucco that are not growing are usually shrinkage. Stair-step cracks following the mortar joints, cracks wider than about a quarter inch, cracks that taper along their length, and cracks with a step across them all point at movement. Mark both ends, date it, photograph it with a coin for scale, and check monthly. A crack that is the same in October as it was in July has stopped.

Do I need a permit and an engineer?

For structural work in Miami-Dade, in practice yes to both. Permit submittals are based on drawings prepared and sealed by a licensed design professional, and section 8-22 of the county code requires an owner-retained architect or engineer as Special Building Inspector for the installation of structural piles and the compaction of fill under slabs on grade. The contractor handles the permit and the inspections.

Are sinkholes a risk here?

Very low. The Florida Geological Survey's statewide sinkhole favorability model places Miami-Dade in its lowest class, and its subsidence incident database holds four records for this county out of roughly 4,400 statewide, none of them confirmed sinkholes, against more than 600 for Hillsborough County. A depression in a Miami yard is nearly always soil loss through a seawall joint, a settled utility trench, or a decomposed root mass.

How do I get a quote?

Call (786) 841-1091 or send the quote form with the property location and what you are seeing. Someone comes out to look at it, and the written quote that follows sets out the method, the quantities, and the price. Both cost nothing.

Get a free quote on foundation work in Miami

Call (786) 841-1091 or send the quote form. Tell us the property location and what you are seeing at the house, and the rest is a conversation.