This directory holds two roofing listings for Ottawa, Illinois. None of them has a Google rating matched to it yet, so what follows is contact detail rather than reputation data.
All of them are recorded in La Salle County. Roofing permits and inspections are issued locally rather than by the state, so a re-roof in Ottawa goes through La Salle County or the municipality's own building department, whichever holds jurisdiction at the property.
Hiring a roofer in Ottawa: what this page knows
Illinois licenses roofing contractors at state level, so a Ottawa roofer should hold a current state license before quoting; the Illinois roofing license rules set out the class and how to check it.
Illinois's peak severe-weather season: April–July. The Illinois storm center lists any National Weather Service alert active right now. NOAA's Storm Events Database holds 185 severe-weather events for La Salle County between 2016 and 2026 — the county the listings on this page put Ottawa in. The most recent event meeting the dataset's severity definition was a hail report measuring 1.50 in (Ping Pong Ball) on August 21, 2026, a preliminary report that has not yet been through NOAA's quality-control review.
We have not modeled a cost index for Ottawa. The national baseline puts a full roof replacement at $5,625–$27,000 and a repair at $250–$3,500; local labor, permit fees and access move both.
All Listings in Ottawa
2 listings
Licensing for roofers working in Ottawa
Illinois licenses roofing contractors at state level, and the requirement applies to work in Ottawa. The license is issued by the Illinois Department of Financial and Professional Regulation.
A state license is not a substitute for local rules: the job still needs a permit and an inspection through La Salle County or the city, and some municipalities require their own contractor registration on top of the state license.
Source: Illinois Department of Financial and Professional Regulation. Checked August 2026. Licensing rules change — verify before you sign anything.
What roofing work costs
We have not modeled a cost index for Ottawa, so there is no Ottawa figure here. These are the national baseline bands, unadjusted.
National reference bands, not quotes and not local numbers. Local labor rates, permit fees and access all move them.
Modeled Illinois markets: Chicago, Naperville, Aurora, Rockford, Peoria.
All roofing cost guidesOther La Salle County towns with listings
Same county, same inspections department, same code — these are the other La Salle County places this directory has roofers for.
Work out the job before you call
Storm history in La Salle County
Ottawa has no weather record of its own — NOAA records severe weather against counties, and the listings on this page put Ottawa in La Salle County. These are weather records for the whole county, not an assessment of any building in Ottawa.
NOAA's Storm Events Database holds 185 severe-weather events recorded against La Salle County between 2016 and 2026: 124 thunderstorm wind events, 40 hail reports and 21 tornadoes.
Of the 40 hail reports, 35 measured 1.00 in across or larger and 5 measured under an inch. The largest on record is 2.75 in (Softball+) on February 28, 2017.
The strongest wind gust in the record is 79 kt (about 91 mph), a measured gust, on August 10, 2020. The county record holds 21 tornadoes over the same period.
The busiest complete year in the record is 2020, with 34 events. The most recent event meeting this dataset's severity definition is a hail report measuring 1.50 in (Ping Pong Ball) on August 21, 2026. That one is a preliminary report and has not yet been through the quality-control review that produces the permanent archive.
Events on record
185
2016–2026
Hail 1.00 in or larger
35
of 40 hail reports
Largest hail
2.75 in
Softball+ · February 28, 2017
Peak gust
79 kt
about 91 mph · August 10, 2020
Tornadoes
21
in the county record
Significant events
109
by this dataset's definition
Events recorded per year
- 2016
- 20
- 2017
- 25
- 2018
- 5
- 2019
- 8
- 2020
- 34
- 2021
- 12
- 2022
- 10
- 2023
- 32
- 2024
- 17
- 2025
- 11
- 2026*
- 11
* The most recent data year is partial. NOAA publishes storm reports on a rolling basis and the final months are still being processed, so a low count in the last year is not evidence of a quiet year. The curated archive behind these counts runs through May 31, 2026; anything later sits in the preliminary block below.
Notable events in the archive
- Aug 10, 2020 -- Thunderstorm Wind (79 kt gust)
- Jun 14, 2017 -- Thunderstorm Wind (60 kt gust) -- $20K property damage reported
- Jun 14, 2017 -- Thunderstorm Wind (55 kt gust) -- $5K property damage reported
- Feb 28, 2017 -- Hail (Softball+ hail, 2.75 in)
- Feb 28, 2017 -- Tornado (EF3)
Selected by the dataset’s own rule rather than by editorial choice: the largest hail, the peak wind gust, the strongest tornado and the two costliest events by recorded property damage, deduplicated and newest first. Any dollar figure above is NOAA’s recorded estimate for that one event.
Preliminary — not yet in the permanent archive
19 preliminary storm reports have been filed for La Salle County since June 1, 2026: 12 thunderstorm wind events, 6 tornadoes and 1 hail report. The largest hail in the window is 1.50 in (Ping Pong Ball), reported August 21, 2026. The strongest gust reported is 77 kt (about 89 mph), on June 10, 2026.
Preliminary reports covering 2026-05-31 onward come from National Weather Service storm reports filed as events occur. They have not yet been through the quality-control review that produces the permanent archive, and individual reports may later be revised, combined or withdrawn. NOAA Storm Prediction Center storm reports.
What these counts cover. County figures count events NOAA recorded against a county (hail, thunderstorm wind and tornadoes). High wind, winter storms, ice storms, blizzards, heavy snow, hurricanes and tropical storms are recorded against National Weather Service forecast zones rather than counties, so they are reported at state level instead. Counts reflect events that were observed and reported.
“Significant” on this page means an event meeting any one of three tests: hail 1.00 in across or larger, a wind gust of 58 kt or more (the National Weather Service severe thunderstorm criterion), or any tornado. It is a severity definition used by this dataset and is not an official NOAA classification.
The damage figure. $26,000 is the sum of NOAA’s recorded property-damage estimates across every event in La Salle County over the period — a county total, not a figure for any one property, any one building or any one claim. NOAA records these figures as estimates made at the time of reporting. They are not adjusted for inflation, and they are frequently absent or zero — a zero means nothing was recorded, not that nothing was damaged.
Source. Archived figures come from the NOAA National Centers for Environmental Information Storm Events Database, covering 2016 through May 31, 2026. Anything after that date comes from NOAA Storm Prediction Center preliminary storm reports and is labelled preliminary wherever it appears. Both are US Government works in the public domain.
Roofing in Ottawa, IL: questions answered from the data
How many roofing contractors are listed in Ottawa, IL?
2 roofing listings are recorded at Ottawa, Illinois addresses in this directory. The count is read from the directory's own database each time this page is rebuilt; a listing is a location record, and the list above shows one card per company.
Does Illinois require a roofing license?
Yes. Illinois licenses roofing contractors at state level, so a Ottawa roofer should hold a current state license before quoting; the Illinois roofing license rules set out the class and how to check it. You can check a credential on the Illinois authority's own site.
How much does a roof replacement cost in Ottawa?
We have not modeled a cost index for Ottawa. The national baseline puts a full roof replacement at $5,625–$27,000 and a repair at $250–$3,500; local labor, permit fees and access move both. Nobody has priced your roof from this page; the only number worth planning around is a written quote from a contractor who has been on it.
When is storm season in Ottawa?
Illinois's peak severe-weather season: April–July. The Illinois storm center lists any National Weather Service alert active right now. Season boundaries are National Weather Service climatology for the state, not a forecast for any one property.
What was the most recent severe storm recorded near Ottawa?
In NOAA's record for La Salle County, the most recent event meeting this dataset's severity definition — hail 1.00 in or larger, a 58 kt gust, or any tornado — was a hail report measuring 1.50 in (Ping Pong Ball) on August 21, 2026, a preliminary report not yet through quality-control review. The La Salle County storm history on this page shows the full 2016–2026 record; it describes weather that happened, not the condition of any building.
Which county handles roofing permits in Ottawa?
Every listing on this page is recorded in La Salle County. Roofing permits and inspections are issued locally rather than by the state, so a re-roof in Ottawa goes through the county or the municipality's own building department, whichever holds jurisdiction at the property.