Foundation & Sinkhole Repair in Winter Park, FL
Winter Park has some of the Orlando area's oldest houses and its most famous sinkhole. We connect Winter Park homeowners with independent Florida-licensed contractors for free, no-obligation foundation repair quotes. The contractor you choose quotes, contracts and does the work.
Get a Free QuoteMay 8, 1981: the Winter Park sinkhole
According to the U.S. Geological Survey, the sinkhole opened "late in the evening of May 8, 1981" near South Denning Drive and West Fairbanks Avenue. USGS gives it as approximately 300 feet in diameter, with a visible depth of about 80 feet. It destroyed a house and undermined an auto repair shop and a pool. The site is now Lake Rose.
It happened in a dry spell: a USGS report on May 1981 Floridan aquifer levels described them as "at record lows in many counties due to lack of rainfall." In the Florida Geological Survey (FGS) database, 1981 is the peak year for reported subsidence incidents across the four-county area (38, 23 in Orange).
Older homes, by the numbers
U.S. Census Bureau American Community Survey (ACS) 2024 5-year estimates.
| Measure | Winter Park |
|---|---|
| Population | 30,274 |
| Median year built | 1976 |
| Built before 1950 | 10.2% |
| Built in the 1950s | 18.4% |
| Built in the 1960s | 10.7% |
| Owner-occupied | 66.2% |
That is 39.3% of housing units built before 1970, in a city chartered in 1887 around Rollins College (1885). Its 1950s and 1960s houses are now 55 to 75 years old. On homes this age it helps to know whether a crack is old settlement or something newer, and diagnosing the cause is work for a Florida-licensed professional engineer (PE).
What the records say today
The FGS database has about 11 reported subsidence incidents inside Winter Park city limits, including a 50-by-30-foot, 6-foot-deep depression reported Oct. 6, 2022 after Hurricane Ian. FGS cautions that most incidents "have not been field-checked and the cause of subsidence is not verified", and older records are often located only roughly, so the count is approximate.
The 1985 state sinkhole-type map (Map Series 110, Sinclair & Stewart) puts the city's interior point in Area III, cover "mainly of cohesive clayey sediments of low permeability," where sinkholes "are most numerous, of varying size and develop abruptly." Indicative only: it is a regional map and cannot speak to a single lot.
Florida has no agency that inspects sinkholes for homeowners (FGS), and a contractor's free evaluation is a sales estimate, not an engineering opinion.
Services Winter Park homeowners compare
- Foundation and sinkhole inspections: a PE's structural report runs about $340–$1,000, up to $3,000 for complex cases.
- Sinkhole and subsidence repair: compaction grouting, chemical grouting and underpinning.
- Slab foundation repair for settlement and cracked slabs.
Prices are typical national ranges from This Old House (2026), Bob Vila, HomeGuide (2026) and Angi (2026), estimates, not quotes.
Permits and historic review
Winter Park issues its own permits through Building & Permitting Services at 401 S. Park Ave. Permit rules vary; the licensed contractor confirms and pulls any permit. Its Historic Preservation Board reviews changes to designated and contributing historic structures; whether below-grade foundation work alone needs review is unconfirmed, so ask the city if your house is designated.
Structural foundation repair is Division I contracting in Florida (Fla. Stat. §489.105(3)); check the contractor's license number on MyFloridaLicense.com.
Winter Park foundation questions
How big was the 1981 Winter Park sinkhole?
The U.S. Geological Survey describes it as approximately 300 feet in diameter with a visible depth of about 80 feet. It opened late on May 8, 1981, near South Denning Drive and West Fairbanks Avenue, and is now Lake Rose. Other records give larger figures; this site uses USGS.
How many subsidence incidents have been reported in Winter Park?
About 11 inside city limits in the Florida Geological Survey database, including an October 2022 report after Hurricane Ian. FGS says most reports are not field-checked and the cause is not verified A count is not a verdict on any one home; a Florida professional engineer can evaluate a specific property.
Does a cracked slab in an older Winter Park home mean a sinkhole?
Not by itself. Slabs crack for many reasons, and Florida law says settling or cracking of a foundation alone is not a catastrophic ground cover collapse (§627.706(2)(a)). Ask your insurer what your policy covers. A professional engineer can investigate the cause. This is general information, not legal or insurance advice.
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