Sacramento flood zones and selling: the form, the map and the insurance
Sacramento sits where the American River runs into the Sacramento River, and parts of it, the Natomas Basin most of all, sit inside a ring of levees. If you sell a house here, flood status shows up twice: once on a disclosure form you sign, and again on the insurance quote your buyer's lender asks for.
Flood maps weren't my job as an inspector, but I learned to look them up before I drove out, because the buyers always asked. This is what I'd tell a seller now.
The disclosure: a yes or no on the hazard form
California sellers fill out a Natural Hazard Disclosure Statement, and the form itself is written into Civil Code 1103.2. Two of its lines are about water. One asks whether the property is in a special flood hazard area, meaning any type of Zone A or V on FEMA's maps. The other asks whether it's in an area of potential flooding on a dam failure inundation map.
You can rely on a report from a third-party disclosure company for the map answers, and the form has a box for exactly that. Two details are worth knowing:
- If FEMA has issued a Letter of Map Revision taking your property out of a special flood hazard area, you can mark "No" even if the printed map hasn't caught up. You attach a copy of the letter.
- The City of Sacramento's guidance on disclosing the flood hazard says that if a property is in a special flood hazard area, the disclosure must state "Flood insurance is required." It also notes that the city and county face potential flooding if Folsom Dam or Nimbus Dam fails, so read the dam line on your report too.
The form's own warning puts it bluntly: these hazards "may limit your ability to develop the real property, to obtain insurance, or to receive assistance after a disaster."
Look up your parcel before the buyer does
- Go to the FEMA Flood Map Service Center, type in your address and open the current Flood Insurance Rate Map panel. Note the zone letter where your lot sits.
- If you're in unincorporated Sacramento County, the county's flood zone information page points you to its online parcel map with FEMA floodplain data, a hotline and a request form. You can also ask whether the county has an elevation certificate on file for your house.
- If you're inside a city, the county page tells you to ask the city. The City of Sacramento runs its own floodplain information line.
- Keep a printout or screenshot with the date on it. If the zone on your disclosure report doesn't match what you found, sort it out before you list, not in escrow.
FloodSmart describes an elevation certificate as a document showing how high a building is compared to how high local floodwaters are expected to get, and says it may lower what you pay for flood insurance. If one exists for your house, find it. A buyer's insurance agent will ask.
What the zone letters mean
The definitions below are FEMA's, from its regulations at 44 CFR 64.3. The city lists A, AE, AH, AO and A99 as the special flood hazard areas found in Sacramento.
| Zone | FEMA's definition, shortened | What it means for a Sacramento sale |
|---|---|---|
| A | Special flood hazard area, no flood elevations determined | Disclose "Yes." Flood insurance required with a federally backed or regulated loan |
| AE | Special flood hazard area, flood elevations determined | Same as A. The expected flood elevation is on the map |
| AO, AH | Special flood hazard, shallow flooding of 1 to 3 feet | Same disclosure and insurance requirement |
| A99 | Special flood hazard where enough progress has been made on levees or similar protection to treat it as complete for insurance rating | Natomas Basin. Still high risk. Insurance still required with a federally backed loan |
| B or X (shaded) | Moderate flood hazard | Not a special flood hazard area. Insurance is optional |
| C or X (unshaded) | Minimal hazard | Not a special flood hazard area. Insurance optional |
| D | Undetermined but possible flood hazard | If you see it, call the city or county floodplain office |
FEMA's consumer site, FloodSmart, says moderate-risk B and X areas "may have reduced their risk with mitigation efforts such as levees." Reduced isn't removed. Behind Sacramento's levees, that's worth remembering.
Flood insurance and the buyer's loan
This is the rule that changes deals. Under 42 U.S.C. 4012a, federally regulated lenders can't make, extend or renew a loan secured by a building in a special flood hazard area unless the building carries flood insurance for the term of the loan. The required amount is the loan balance or the program maximum, whichever is less. FEMA's rules list the zones where purchase is mandatory, and A99 is on the list.
The city's disclosure page adds the part buyers from out of state miss: a regular homeowner's policy doesn't cover flood damage.
In Sacramento County you can see that rule in the National Flood Insurance Program (NFIP) data.
- 35,666
- residential structures in the county's special flood hazard area, 8.0% of 443,240
- 81.1%
- share of those structures with an NFIP flood policy
- 42,334
- NFIP residential policies in force countywide
- 3,864
- NFIP claims filed in the county since 1978
Source: FEMA, OpenFEMA NFIP residential penetration rates, as of August 3, 2026, and NFIP redacted claims, data as of September 8, 2026.
That 81.1% stands out. In the same FEMA dataset, the share of high-risk homes with a policy is 28.1% in Yolo County, 24.7% in San Joaquin and 32.7% in Los Angeles County. My guess is the lender rule at work: the whole Natomas Basin is a mapped A99 zone, and plenty of those houses carry mortgages. Outside the high-risk zones it flips. Only 13,397 of the county's other 407,574 residential structures have a policy, about 3.3%.
If your house is in an A or A99 zone, assume a financed buyer will need a flood policy and will price it into what they can pay.
Natomas: the levees, the A99 zone and what it means for a seller
The Sacramento Area Flood Control Agency says the Natomas Basin is surrounded by 42 miles of levees along the American River, the Sacramento River, the Natomas Cross Canal and the Natomas East Main Drain Canal. In 2006 the U.S. Army Corps of Engineers found the basin had less than a 100-year level of protection because of deep under-seepage. SAFCA and the state started levee work in 2007 and finished 18.3 of the 42 miles by 2013. The Corps began the remaining 24 miles in 2019, aimed at a minimum 200-year level of protection.
The flood map followed the levee findings. The City of Sacramento's Natomas floodplain page says FEMA remapped the basin as an AE zone in December 2008. AE meant new buildings had to be elevated or flood-proofed to the 100-year level, up to 20 feet in some spots, which the city calls a de facto building moratorium. On June 16, 2015 the city got a new map giving Natomas an A99 designation. The city describes A99 as an interim zone that is still high risk but allows construction.
For a seller, that adds up to a short list:
- You disclose "Yes" for a special flood hazard area. A99 is an A zone.
- Your buyer with a federally backed mortgage will need flood insurance. The city says so directly.
- Most North Natomas houses are young. In ZIP code 95835, 86.4% of housing units were built in 2000 or later, per the Census Bureau's 2020 to 2024 estimates. So your disclosure is mostly about the map, not about old plumbing.
What the claims record shows
Sacramento County's own flooding history page names 1986, 1995, 1997, 2006, 2017 and 2023 as the most notable flood years. It also says more than 370 square miles of the county lie within the 100-year floodplain. FEMA's claim records line up with that list.
Counts every claim record, paid or not. 2,373 of the 3,864 claims since 1978 received a payment.
Show the numbers
| Year of loss | Claims filed |
|---|---|
| 1980 | 32 |
| 1981 | 6 |
| 1982 | 64 |
| 1983 | 67 |
| 1984 | 2 |
| 1985 | 1 |
| 1986 | 257 |
| 1987 | 4 |
| 1988 | 2 |
| 1989 | 2 |
| 1990 | 5 |
| 1991 | 8 |
| 1992 | 32 |
| 1993 | 94 |
| 1994 | 31 |
| 1995 | 1,340 |
| 1996 | 113 |
| 1997 | 601 |
| 1998 | 240 |
| 1999 | 17 |
| 2000 | 84 |
| 2001 | 19 |
| 2002 | 27 |
| 2003 | 11 |
| 2004 | 87 |
| 2005 | 119 |
| 2006 | 54 |
| 2007 | 4 |
| 2008 | 13 |
| 2009 | 11 |
| 2010 | 13 |
| 2011 | 14 |
| 2012 | 38 |
| 2013 | 3 |
| 2014 | 15 |
| 2015 | 3 |
| 2016 | 21 |
| 2017 | 148 |
| 2018 | 12 |
| 2019 | 12 |
| 2020 | 9 |
| 2021 | 41 |
| 2022 | 40 |
| 2023 | 104 |
| 2024 | 16 |
| 2025 | 8 |
Source: FEMA, OpenFEMA NFIP redacted claims v3, Sacramento County records, data as of September 8, 2026.
The 1995 spike is the big one: 1,340 claims, and about $11.5 million paid, not adjusted for inflation. The county describes that year as widespread local flooding along creeks like Arcade, Morrison and Florin. 1997 brought 601 claims, the year the Cosumnes River broke through levees in 24 places. 2017 had 148 and 2023 had 104.
One more number from the same records. Of the 3,864 claims, 930, about one in four, came from properties rated in B, C or X zones, outside the high-risk A zones. A moderate-risk map doesn't promise a dry crawlspace.
How flood status changes a sale
In my experience, flood status didn't kill many deals by itself. What it did was change the buyer's math. A buyer financing a house in an A or A99 zone has a flood premium stacked on the mortgage payment, and that comes out of what they can offer. A buyer paying cash isn't subject to the lender's insurance requirement, though a sensible one still prices the risk.
If you're in a mapped zone and on a clock, because of a move, a probate deadline or a second mortgage payment, it helps to know your options before you list. A Sacramento guide to selling on a deadline lays out the ways to sell and how long each one takes. If you want a cash offer to compare against a listing, Lorris Home Buyers has a short form where you can describe the house and get a number.
Before you list: a flood checklist
- Look up your zone on FEMA's map and write down the panel number and date.
- Find any elevation certificate or Letter of Map Revision for your house.
- Pull your own flood insurance declarations page if you carry a policy. Buyers will ask what you pay.
- Write down any water you've had in the house or crawlspace, and when.
- Order the natural hazard disclosure report early and read the flood lines yourself.
Check with your insurance agent or the city or county floodplain office if the zone on the map and the zone on the report don't agree. Get that settled before the first showing.