Foundation repair in Miami, FL
Compare up to three local Miami foundation contractors from Henry's vetted bench — piers, slab repair, drainage and structural cracks.
Miami homes almost never have basements; nearly every house here sits on a monolithic concrete slab or a CMU-block structure poured directly onto compacted fill over oolitic limestone bedrock. That bedrock is generally good news for foundation stability, but the fill sitting between the slab and the rock is not: much of Miami, especially older lots in Little Havana, Allapattah and parts of Coral Way, was built up over former wetland, marl and organic muck or peat, and that fill compresses and decomposes unevenly over decades. A shallow water table, seasonal wet-season saturation, and, near the bay in Coconut Grove, Brickell and Edgewater, seawater intrusion and seawall-related settlement add pressure that shows up as slab cracking, door and window misalignment, and tilted pavers or driveways rather than the bowing basement walls you'd see up north. Because this is South Florida's High-Velocity Hurricane Zone, any structural repair also has to satisfy Florida Building Code HVHZ provisions and product approvals, and older buildings may be tangled up with Miami-Dade's 40/50-year recertification process. This guide covers what foundation, slab and concrete leveling work actually costs in Miami, how City of Miami and Miami-Dade County RER permitting works, how to verify a Florida DBPR license, and which neighborhoods carry which specific risks.
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Show up
Call back. Keep appointments. And if something changes, communicate it.
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Clear scope, pier counts, and pricing in writing—so you know what you're agreeing to.
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How Henry matches you with Miami foundation contractors
- Step 1
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Your ZIP, the cracks or settling you've noticed, and how soon you need it looked at. Two minutes, four questions.
- Step 2
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Only three Henry Standard foundation contractors in your Miami-area ZIP get your request — pros we've checked for responsiveness, references and written estimates.
- Step 3
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What foundation repair costs in Miami
| Foundation/slab inspection with written report | $250 - $650 |
| Structural engineer evaluation letter | $500 - $1,200 |
| Helical piers (per pier) | $1,400 - $2,600 |
| Push piers (per pier) | $1,300 - $2,400 |
| Compaction grouting (per point, muck/peat fill) | $1,800 - $4,000 |
| Polyurethane foam injection (per injection point) | $450 - $900 |
| Slab crack injection (epoxy or polyurethane) | $500 - $1,100 per crack |
| Interior/exterior drainage correction (French drain, grading) | $3,500 - $12,000 |
| Seawall-related settlement repair (partial) | $8,000 - $35,000+ |
| Concrete/paver driveway leveling (polyurethane) | $800 - $3,200 |
| Pool deck or patio leveling | $700 - $2,800 |
| Full underpinning project (multiple piers) | $9,000 - $28,000 |
Ranges are general estimates gathered from homeowner-reported quotes in the Miami area, not an offer or a quote for your project.
Best time for foundation work in Miami
Miami has no frost season at all, so foundation and slab work runs year-round without the frozen-ground shutdowns contractors in northern markets deal with, but the wet season, roughly June through October, drives most of the service calls. Afternoon thunderstorms and tropical systems saturate the shallow water table across Little Havana, Flagami and Allapattah, and that saturation is what activates settlement in muck and peat fill pockets that stayed quiet during the dry winter months. Hurricane season also means some structural repair crews get pulled onto storm-damage and wind-mitigation work from August through October, which can stretch scheduling for routine slab and piering jobs. The dry season, December through April, is when soil moisture drops and slabs and driveways that were floating on saturated fill can show new cracking as the ground beneath them shrinks slightly, particularly in older neighborhoods like Shenandoah and The Roads built on reclaimed lowland. Near the bay in Coconut Grove and Brickell, king tide season in fall brings higher-than-normal tidal groundwater that can worsen slab moisture intrusion and seawall-adjacent settlement independent of rainfall. Homeowners who want the shortest wait for a non-emergency inspection typically do best scheduling in late winter or early spring, before wet-season saturation and hurricane-season demand both hit at once.
Permits and HOA rules
Permitting in Miami depends on exactly where the property sits. Inside Miami city limits, structural and foundation repair permits go through the City of Miami Building Department, which handles plan review, HVHZ product approval verification and inspections for pier installation, underpinning and slab repair; applications are filed through the city's online permitting portal, and the department's offices are at Miami Riverside Center, 444 SW 2nd Avenue. For unincorporated Miami-Dade County and many surrounding municipalities that don't run their own building department, permits instead go through Miami-Dade County's Regulatory and Economic Resources (RER) department, formerly known as Miami-Dade DERM/Building, which also maintains the county's Notice of Acceptance (NOA) product-approval system that HVHZ-rated repair materials and anchors must comply with. Because Miami-Dade sits in Florida's High-Velocity Hurricane Zone, structural repairs including helical or push pier systems, compaction grouting and any exterior wall anchoring generally require a sealed engineer's plan referencing an approved NOA product, not just a generic scope of work. If your building is older, ask whether the work is connected to Miami-Dade's 40-year (and now 50-year, statewide) building recertification program, since foundation and structural deficiencies flagged in a recertification inspection often need to be permitted and closed out before the building can pass. Always confirm which of the two offices, City of Miami or County RER, has jurisdiction over your address before assuming a permit process, and ask your contractor to show you the filed permit number once it's submitted.
Licensing and insurance in Florida
Florida licenses contractors at the state level through the Department of Business and Professional Regulation (DBPR), and foundation and structural repair work in Miami should be performed under a Certified General Contractor (CGC), Certified Building Contractor (CBC) or Certified Residential Contractor (CRC) license, all of which are statewide licenses you can verify directly through the DBPR's online license lookup tool. Because Miami-Dade sits in the HVHZ, contractors and engineers working on pier systems, underpinning or any exterior structural repair need familiarity with Florida Building Code HVHZ provisions and NOA product approvals, and a company unfamiliar with that system is a warning sign regardless of how clean its DBPR license looks. Before hiring, look up the company's license number on DBPR's website to confirm it's active, check for any disciplinary history, and confirm the named qualifying individual actually matches who's showing up to your job. Miami-Dade County also requires a Certificate of Use and local business tax receipt for contractors operating in the county, which you can confirm through Miami-Dade's tax collector records. Any pier plan, underpinning design or wall-anchor system should carry the seal of a Florida-licensed professional engineer, verifiable through the Florida Board of Professional Engineers, and that engineer's letter should be specific to your address and soil conditions, not a boilerplate document. Given South Florida's high volume of storm-chasing and unlicensed operators after major weather events, always ask for the DBPR license number in writing before signing anything and verify it yourself rather than trusting a printed card.
How to vet a foundation repair contractor in Miami
Confirm the company's Florida DBPR license number directly through the DBPR license lookup, and make sure it's a Certified General, Building or Residential Contractor license, not just a handyman registration. Ask whether they or their engineer are familiar with HVHZ Notice of Acceptance requirements, since a pier or anchor system that isn't NOA-listed can fail permit review in either the City of Miami or County RER.
Ask specifically whether they've worked on the type of fill under your lot, oolitic limestone close to the surface versus deeper muck or peat fill common in reclaimed lowland areas like Shenandoah and parts of Flagami. The right repair method, helical piers, compaction grouting, or a combination, depends heavily on what's actually beneath the slab.
Request the name and Florida PE license number of the structural engineer who will seal the repair plan, and verify it through the Florida Board of Professional Engineers before work begins.
What a fair Miami quote includes
A complete quote should itemize pier or grouting point count, reference the applicable NOA product approval numbers, list the City of Miami or Miami-Dade RER permit fee and engineer letter cost separately, and include written warranty terms that specify whether they transfer to a new owner at sale.
Get at least three written quotes for anything beyond a single slab crack injection, especially for muck-fill settlement or seawall-adjacent work in Coconut Grove or Brickell, where scope and pier count can vary widely between companies.
Questions to ask before you hire
Which office is permitting this job, City of Miami Building Department or Miami-Dade RER, and can I see the filed permit number? Does the proposed repair system have current HVHZ Notice of Acceptance approval?
Is this settlement coming from muck or peat fill compaction, oolitic limestone irregularities, or seawall-related movement near the bay, and how does that change the repair method you're proposing? Is my building subject to 40/50-year recertification, and if so, does this repair need to be tied to that filing?
Red flags in the Miami market
Be wary of any contractor who can't produce a DBPR license number on request, or whose license doesn't show up in the state lookup tool. Post-hurricane season especially draws unlicensed storm-chasers offering fast, cash-only slab and foundation repairs.
Watch for a company that proposes a generic pier system without referencing HVHZ product approval or without involving a Florida-licensed engineer; that plan is unlikely to pass permit review with either the City of Miami or Miami-Dade RER and could leave you liable at resale or recertification.
Miami's geology and construction reality
Miami sits on oolitic limestone bedrock that's generally solid but irregular in depth, sitting under a layer of fill that varies block to block; older lowland areas like Shenandoah, The Roads and pockets of Little Havana and Allapattah were built up over former wetland with organic muck or peat fill that continues to settle and decompose slowly, unevenly loading slabs above it decades after construction.
There are essentially no basements in Miami; virtually every home is built on a monolithic concrete slab or CMU block walls on a slab foundation, so what looks like 'foundation damage' almost always shows up as slab cracking, tile popping, or door and window misalignment rather than a bowing basement wall.
Near the bay in Coconut Grove, Brickell and Edgewater, aging seawalls and shifting fill behind them can cause settlement that mimics ordinary foundation problems but actually requires seawall assessment and repair first; a foundation contractor who doesn't check the seawall condition on a waterfront lot is missing the real cause.
The shallow water table across the county also means seawater intrusion and chronic slab moisture are common secondary issues, and HVHZ-rated repair materials, particularly for exterior grouting and injection systems, need documented NOA approval to pass inspection.
Areas Henry covers
Coral Way · Little Havana · Shenandoah · The Roads · Coconut Grove · Allapattah · Flagami · Brickell · Edgewater · Wynwood · Little Haiti · Upper Eastside · Silver Bluff · Overtown
Common questions
Does Miami have basements that need foundation repair?
No. Almost every home in Miami is built on a monolithic concrete slab or CMU block walls on a slab, not a basement. Foundation problems here typically show up as slab cracking, tile popping, or door and window misalignment rather than bowing basement walls.
How much does foundation repair cost in Miami?
Helical or push pier jobs typically run $1,300 to $2,600 per pier, with a full underpinning project running $9,000 to $28,000 depending on pier count. Compaction grouting for muck-fill settlement runs $1,800 to $4,000 per point, and slab crack injection typically runs $500 to $1,100 per crack.
Do I need a permit for foundation repair in Miami?
Yes, structural repairs like piers, underpinning, or compaction grouting require a permit either through the City of Miami Building Department or Miami-Dade County RER, depending on your address, and the repair plan generally must be sealed by a Florida-licensed engineer and reference HVHZ-approved products.
What license should a Miami foundation repair contractor have?
Look for a Florida DBPR-issued Certified General Contractor (CGC), Certified Building Contractor (CBC), or Certified Residential Contractor (CRC) license, verifiable through DBPR's online license lookup. Miami-Dade also requires a local Certificate of Use and business tax receipt.
Why does foundation settlement happen in Miami if the bedrock is solid limestone?
The problem usually isn't the limestone itself, it's the fill sitting between the slab and the bedrock. Older lowland lots, especially in Shenandoah, The Roads, and parts of Little Havana and Allapattah, were built up over former wetland with organic muck or peat fill that settles and decomposes unevenly for decades.
Is mudjacking or polyurethane foam better for concrete leveling in Miami?
Polyurethane foam injection dominates the Miami market because it's lightweight, doesn't add load to already-compressible fill, cures fast, and resists the moisture and water-table conditions common here. Traditional mudjacking is still available but is used far less often locally.
What is 40/50-year recertification and does it affect foundation repair?
Miami-Dade County (and now Florida statewide) requires older buildings to undergo structural and electrical recertification at 40 years and every 10 years after. Foundation or structural deficiencies found during that inspection typically need to be permitted and repaired before the building can pass, so recertification often triggers foundation repair work.
Do waterfront homes in Coconut Grove or Brickell have different foundation issues?
Yes. Near the bay, aging seawalls and shifting fill behind them can cause settlement that looks like ordinary foundation movement but is actually tied to seawall condition. A qualified contractor should assess the seawall before proposing a pier or grouting repair on a waterfront lot.
Miami guides from The Henry Files
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