Avon, Ohio
Inside Avon's city limits, a shallow water table limits basements on 85% of mapped land, higher than 72% of Ohio cities. Shrink-swell clay limits houses without basements on 11%, the highest of 16 cities in Lorain County.
That water-table share is below Lorain County's 91%. FEMA's flood data list 2 flood losses since 2016 in ZIP code 44011 overlapping the city. Of its 9,868 homes, 18% were built before 1980; the median dates from 2001.
Data as of October 13, 2026 · sources · in Lorain County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 1 overlapping ZIP
of homes built before 1980
Basement waterproofing in Avon
Basement waterproofing in Avon: a shallow water table limits basements on 85% of Avon's mapped land, more than in 72% of Ohio cities, and the ZIP code overlapping Avon logged 2 FEMA flood losses since 2016.
The city lists a permit for the work.
In Lorain County, 65% of the 60 flood-loss buildings with a recorded foundation type had basements.
About 7,700 of Avon's 9,868 homes are detached houses.
| City permit | Avon's permit fee schedule has a basement waterproofing line with a per-wall fee. (City of Avon Building Department, read October 2, 2026) |
| Contractor registration | Avon says any contractor working in the city must register with the Building Department, and no permit is issued to an unregistered contractor. (City of Avon Building Department) |
| Prices | Cost guide ranges compared |
Soil under Avon city limits
| Expansive clay (limits slab homes) | 11.1% |
| High water table (limits basements) | 85.2% |
| Septic fields very limited | 92.0% |
| Clay swell (LEP, by area) | 3.9% |
| High-swell land (LEP 6%+) | 10.6% |
| Mapped soil | 13,353 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Miner | 28% | n/a |
| Mahoning | 9% | 100% |
| Mermill | 7% | n/a |
| Lorain | 7% | n/a |
| Haskins | 6% | n/a |
| Allis | 5% | n/a |
What the numbers mean here
On 85% of Avon's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 92% of the land very limited for septic absorption fields.
Drought in Lorain County
0% of Lorain County is in drought (D1 or worse) on the October 13, 2026 map. County detail.
Flood losses by ZIP code
FEMA flood records since 2016 in the ZIP codes that overlap Avon. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 44011 | 100% | 2 | $7,364 |
Homes in Avon
| Housing units | 9,868 |
| Median year built | 2001 |
| Built before 1980 | 18% |
| Built 2000 or later | 54% |
| Owner-occupied | 88% |
| Median value, owner-occupied | $395,900 |
| Single-family detached | 78% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Avon Lake | 3 mi | 6% | 94% |
| Westlake | 4 mi | under 1% | 75% |
| North Ridgeville | 4 mi | 5% | 87% |
| Sheffield | 5 mi | 8% | 89% |
| North Olmsted | 5 mi | 0% | 58% |
| Bay Village | 5 mi | 0% | 51% |
| Sheffield Lake | 6 mi | 1% | 77% |
| Elyria | 7 mi | 8% | 72% |
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · Census ACS 2020-2024. Methods · Data status