This directory holds three roofing listings for Discovery Bay, California. 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 Contra Costa County. Roofing permits and inspections are issued locally rather than by the state, so a re-roof in Discovery Bay goes through Contra Costa County or the municipality's own building department, whichever holds jurisdiction at the property.
Hiring a roofer in Discovery Bay: what this page knows
California licenses roofing contractors at state level, so a Discovery Bay roofer should hold a current state license before quoting; the California roofing license rules set out the class and how to check it.
California's peak severe-weather season: November–March, plus autumn offshore wind events. The California storm center lists any National Weather Service alert active right now. NOAA's Storm Events Database holds 15 severe-weather events for Contra Costa County between 2016 and 2026 — the county the listings on this page put Discovery Bay in.
We have not modeled a cost index for Discovery Bay. 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 Discovery Bay
3 listings
Licensing for roofers working in Discovery Bay
California licenses roofing contractors at state level, and the requirement applies to work in Discovery Bay. The license is issued by the Contractors State License Board.
A state license is not a substitute for local rules: the job still needs a permit and an inspection through Contra Costa County or the city, and some municipalities require their own contractor registration on top of the state license.
Source: Contractors State License Board. Checked August 2026. Licensing rules change — verify before you sign anything.
What roofing work costs
We have not modeled a cost index for Discovery Bay, so there is no Discovery Bay 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.
All roofing cost guidesOther Contra Costa County towns with listings
Same county, same inspections department, same code — these are the other Contra Costa County places this directory has roofers for.
Work out the job before you call
Storm history in Contra Costa County
Discovery Bay has no weather record of its own — NOAA records severe weather against counties, and the listings on this page put Discovery Bay in Contra Costa County. These are weather records for the whole county, not an assessment of any building in Discovery Bay.
NOAA's Storm Events Database holds 15 severe-weather events recorded against Contra Costa County between 2016 and 2026: 12 hail reports and 3 thunderstorm wind events.
All 12 hail reports carrying a measured size were under 1.00 in across. The largest on record is 0.50 in (Pea) on March 3, 2018.
The strongest wind gust in the record is 55 kt (about 63 mph), a measured gust, on August 16, 2020.
The busiest complete year in the record is 2018, with 10 events.
Events on record
15
2016–2026
Largest hail
0.50 in
Pea · March 3, 2018
Peak gust
55 kt
about 63 mph · August 16, 2020
Events recorded per year
- 2016
- 0
- 2017
- 0
- 2018
- 10
- 2019
- 1
- 2020
- 2
- 2021
- 0
- 2022
- 0
- 2023
- 0
- 2024
- 2
- 2025
- 0
- 2026*
- 0
* 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
- Apr 5, 2024 -- Thunderstorm Wind (50 kt gust) -- $10 property damage reported
- Apr 5, 2024 -- Thunderstorm Wind (50 kt gust) -- $10 property damage reported
- Aug 16, 2020 -- Thunderstorm Wind (55 kt gust)
- Mar 3, 2018 -- Hail (Pea hail, 0.50 in)
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.
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.
The damage figure. $20 is the sum of NOAA’s recorded property-damage estimates across every event in Contra Costa 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 Discovery Bay, CA: questions answered from the data
How many roofing contractors are listed in Discovery Bay, CA?
3 roofing listings are recorded at Discovery Bay, California 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 California require a roofing license?
Yes. California licenses roofing contractors at state level, so a Discovery Bay roofer should hold a current state license before quoting; the California roofing license rules set out the class and how to check it. You can check a credential on the California authority's own site.
How much does a roof replacement cost in Discovery Bay?
We have not modeled a cost index for Discovery Bay. 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 Discovery Bay?
California's peak severe-weather season: November–March, plus autumn offshore wind events. The California 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.
Which county handles roofing permits in Discovery Bay?
Every listing on this page is recorded in Contra Costa County. Roofing permits and inspections are issued locally rather than by the state, so a re-roof in Discovery Bay goes through the county or the municipality's own building department, whichever holds jurisdiction at the property.