Foundation Repair in Orlando & Central Florida, FL

Local know-how

Why foundations move in Orlando

Central Florida sits on limestone that slowly dissolves, and that makes it one of the most sinkhole-prone regions in the country. The 1981 Winter Park sinkhole is one of the best-known examples. Most problems are far smaller: soil gradually raveling into voids below, causing slabs to settle and walls to crack.

Sandy soils in the region drain quickly but can also shift, wash out or compact under load. Most homes are slab-on-grade with concrete block walls, so settlement often shows up as stair-step cracks in block, cracked stucco and tile, and doors that stick.

Local contractors investigate the cause, stabilize with piers where needed and can often work alongside engineers when sinkhole activity is suspected.

Limestone, sand and the Winter Park sinkhole

Central Florida sits on thick limestone covered by sand and clay. Groundwater slowly dissolves the limestone, and where the cover above a cavity fails, the ground can sink. The best-known example is the Winter Park sinkhole of May 1981, documented by the U.S. Geological Survey: within about two days it grew to roughly 320 feet wide and 90 to 100 feet deep, swallowing a house, cars, parts of businesses, streets and the city pool, with losses estimated at more than $2 million. It later filled with water and became Lake Rose.

Collapses like that are rare. Far more common is slow settlement: sand trickles into small voids in the limestone, or loose sandy fill compresses under the weight of a house, and one part of a slab drops a fraction of an inch at a time. Because most Orlando-area homes are concrete block on a slab, that movement shows up as stair-step cracks through block and stucco, cracked tile and doors that start to stick.

Settlement or sinkhole?

It is often impossible to tell from cracks alone. Signs that point toward sinkhole activity include cracks that grow quickly, a circular pattern of cracks in the ground, new depressions in the yard, fence posts or trees that tilt and doors that suddenly stop closing. Ordinary settlement tends to be slower and linked to drainage, leaks or poorly compacted fill. When sinkhole activity is suspected, a geotechnical investigation with borings or ground-penetrating radar comes before any repair plan. Our guide sinkholes and foundations explains the process.

Florida insurance rules

Florida is one of the few states with specific sinkhole insurance rules. Every property insurer must cover catastrophic ground cover collapse, meaning an abrupt collapse with a visible depression, structural damage and the building condemned and ordered vacated. Broader sinkhole loss coverage must be offered for an additional premium, with deductibles that can be a percentage of the dwelling limit. Check your declarations page to see which coverage you have; see does insurance cover foundation repair?

Typical costs in Orlando

These are published figures for orientation only, not quotes. Averages include many small jobs; multi-pier projects cost more. The contractor you are connected with sets the price after an inspection.

Sinkhole repairs that need investigation and grouting usually cost considerably more than ordinary settlement repairs.

Licensing and permits

Florida requires a contractor license from the Department of Business and Professional Regulation or a local license for regulated construction work, and foundation repair and stabilization are typically done by state-certified general or building contractors. Orange and Seminole Counties and the cities issue building permits. Check the license on the DBPR website before you sign.

Pool decks, patios and additions

Screened pool enclosures, pool decks and patios on separate slabs often settle on their own, especially where sandy fill washed out or downspouts drain onto the edge. Many can be lifted with grout or foam; see mudjacking vs. polyjacking. Where an addition meets the original house, a crack line often shows two slabs moving differently.

What to document before you call

Central Florida contractors and engineers ask similar questions, so it helps to prepare. Note when you first saw each crack and photograph it with a ruler and the date. Check whether doors and windows stick, whether cracks in the stucco or block run in a stair-step pattern, and whether any depressions have formed in the yard, driveway or pool deck. After heavy summer storms or a tropical system, walk the perimeter and look for soil washing out at downspouts or along the slab edge. If you have a well or irrigation system, note any sudden change in water level or sand in the lines, since these can matter when a professional looks for sinkhole activity.

If an insurance claim is possible, report the damage to your insurer promptly and keep all correspondence. Florida sinkhole claims usually involve testing by a professional engineer or geologist, and the report often decides whether ground stabilization with grout, underpinning with piers, or both are recommended. Repairs that follow such a report are usually more expensive than routine settlement repairs, so ask for a written scope that matches the report.

Sources

• USGS: Winter Park, Florida sinkhole, 1981 (image and description)
• ClickOrlando (WKMG): Flashback – the massive Winter Park sinkhole
• Florida Statutes § 627.706: Sinkhole insurance; catastrophic ground cover collapse
• This Old House: Foundation repair in Orlando, FL
• Bob Vila: Foundation repair cost (national price ranges)
• This Old House: Foundation repair cost (national guide)
• Hillsborough County: Florida contractor licensing (DBPR or local license required)