When Pacific storms line up, the Richmond District often feels the first punch. Wind‑driven rain, clogged drains, and older rooflines can turn a fast downpour into leaks or localized flooding. If you are getting your home ready for the next rainy stretch, a focused plan protects your property and peace of mind. Below you will find what to check, which city maps and programs to use, and how to hire the right pros. Let’s dive in.
Why west side storms matter
The Bay Area sees powerful Pacific systems and atmospheric rivers that can bring intense rain and coastal gusts that have topped 50 to 60 mph in past events. National Weather Service summaries explain these impacts.
On San Francisco’s west side, including the Richmond District, marine influence adds frequent wind and moisture. That exposure can increase wind‑driven rain on roofs and façades compared with more sheltered neighborhoods. Local microclimate guides describe these fog‑belt patterns.
Many homes in the area were built in the early 1900s. Older materials, ornate eaves, dormers, and chimneys all merit careful inspection so storms do not exploit small weaknesses.
Check your flood risk
Start with a clear picture of parcel‑level risk. The San Francisco Public Utilities Commission models stormwater flooding across the city.
Use SFPUC flood maps
See whether your property sits in an area with modeled ponding during big storms by checking the SFPUC Flood Map. This city resource highlights stormwater runoff risk that may not appear on federal maps.
Compare FEMA flood zones
Review federal designations at the FEMA Flood Map Service Center. Together, SFPUC and FEMA tools help you discuss insurance and mitigation with confidence.
Know your sewer lateral role
San Francisco operates combined sewers in many areas. You are responsible for the private upper sewer lateral from your building to the main, so inspections and maintenance matter. Review SFPUC guidance on sewer lateral responsibilities.
Report issues and find sandbags
If a catch basin is clogged or the street is flooding, report it to 311. For sandbag locations, live hazard layers, and readiness tips, see SFPUC’s RainReadySF resources.
Roof readiness checklist
Put safety first. The National Roofing Contractors Association advises against homeowners climbing onto roofs. NRCA recommends professional inspections after severe weather.
Before storm season
- Book a licensed roofer to inspect roof coverings, flashing, roof‑to‑wall transitions, valleys, and drains or scuppers on low‑slope roofs.
- Check attic interiors for daylight at penetrations, water stains, or musty odors that signal hidden leaks.
- Confirm chimney caps and crowns are intact and properly sealed.
Gutters, downspouts, and eaves
- Clear gutters and downspouts of leaves and debris so water does not back up under eaves.
- Secure loose hangers and confirm downspouts discharge several feet away from the foundation or into a functioning drain.
- Consider leaf guards only if tree cover is heavy. You still need periodic cleaning.
Flat and low‑slope roofs
- Keep scuppers, internal drains, and overflow paths clear to prevent ponding.
- If the membrane is aging or patched in spots, have a licensed contractor evaluate it before heavy rain.
Trees and yard
- Trim limbs overhanging the roof. Remove or secure loose outdoor items that can become windborne.
Last‑minute measures
- Keep a heavy‑duty tarp and fasteners for short‑term emergency coverage. Use professionals for permanent repairs.
- Stage sandbags and a sump pump with battery backup if your garage or basement has flooded before. SFPUC’s RainReady page lists where to get sandbags.
Drainage and site prep
A little redirection goes a long way in the Richmond District’s fast, wind‑driven rain.
- Extend downspouts to discharge away from walls and slabs. Add splash blocks where needed.
- Keep driveway trench drains, stairwell drains, and sidewalk drains clear of debris so water can flow freely.
- Seal obvious gaps around exterior penetrations. Small openings invite wind‑driven rain.
After a storm
Once conditions are safe, do a careful walkthrough.
- Photograph interior stains, roof areas you can see from the ground, and any yard debris for insurance.
- Schedule a professional inspection to spot subtle damage and recommend repairs. NRCA cautions against unlicensed “storm chasers” and urges verification.
- If wastewater is involved, contact 311 and a plumbing professional. Avoid contact with contaminated water.
Permits, historic review, and hiring
Planning roof work in San Francisco often requires permits and the right licensed contractor.
- Permits: Many reroofing projects need permits, especially if sheathing is removed or replaced. Review current rules and typical online fees on the SF Department of Building Inspection’s reroofing permit page. Some limited reroofing without sheathing replacement may be exempt. Confirm your scope with DBI before starting.
- Historic status: If your property may be a historic resource, exterior changes can trigger extra review. Check your status on the City’s historic resource status page before planning visible roof or façade work.
- Hiring: Roofing contractors must hold a C‑39 license in California. Verify the license, workers’ comp, and insurance using the CSLB Check a License tool. Get at least three bids and check references.
- Assistance: SFPUC offers RainReady resources and a Floodwater Grant program for qualifying properties that have experienced flooding. Review eligibility before investing in backflow valves, barriers, or sump systems.
Quick storm kit
- Heavy‑duty tarp, plastic sheeting, and duct tape
- Sandbags or water‑fill barriers for low entries
- Sump pump with battery backup, extension cords, and GFCI protection
- Flashlights, spare batteries, and a basic first aid kit
With a few targeted checks, you can turn west side weather into a non‑event. If you are planning a sale or purchase in the Richmond District or simply want vetted vendor referrals for roofing and drainage, reach out to David Poulsen for local, concierge‑level guidance.
FAQs
How do I check flood risk for a Richmond District home?
- Use the SFPUC Flood Map for stormwater risk and the FEMA Flood Map Service Center for federal zones, then discuss insurance with your provider.
Who fixes a clogged street drain during a storm in San Francisco?
- Report clogged catch basins and street flooding to 311, and use SFPUC’s RainReadySF resources for sandbag locations and updates.
What roof items should a pro inspect before heavy rain?
- Ask a licensed roofer to check coverings, flashing, roof‑to‑wall transitions, chimneys, skylights, and drains or scuppers, and follow NRCA safety guidance.
Do I need a San Francisco permit to reroof?
- Many reroofing projects do. Review the SFDBI reroofing permit page and confirm your exact scope with DBI before work begins.
How do I verify a roofing contractor in California?
- Check the company’s C‑39 status, insurance, and complaint history using CSLB’s Check a License tool.
