Blog · October 14, 2026 · Missouri
Using the Sunset Hills Flood Zone Map
Flood zones are set by FEMA, and checking one near Grantwood Village takes a few minutes.
Main page: St. Louis County, MO GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before an offer near Fenton, check the Sunset Hills flood zone map: the zone on that map shapes insurance, building rules and resale. This Sunset Hills guide covers: finding the address on FEMA's map, reading the zone codes, and confirming the outline on the county map.
Where the Sunset Hills flood zone map lives
Flood zones come from FEMA's Flood Map Service Center: search an address around Kirkwood, and pick the FIRMette or map view. Vacant ground around Kirkwood can still be found: zoom in from Interstate 64 then click the parcel area.
The viewer St. Louis County publishes
Begin with the St. Louis County ArcGIS parcel map; it includes each assessed parcel from Grantwood Village to Lakeshire. For land near Grantwood Village, put in a street address, an owner's name or a parcel number, then pick the result to center the map on it. For acreage around Lakeshire, write down the parcel ID while you have it open; each records desk in the county will want it.
Low spots and local drainage
Small streams around Oakland aren't always studied in detail, so ask neighbors about past flooding. Marshy spots near Lakeshire can limit building too; check the National Wetlands Inventory mapper for a first look.
Legal descriptions in Missouri
Missouri uses the Public Land Survey System, so rural legal descriptions near Fenton cite section, township and range. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though corrections make some sections near Grantwood Village odd-sized. Copy the legal description from the record for the parcel near Lakeshire before you request a deed or survey.
Neighboring parcel maps
St. Louis County borders Madison County, IL, Monroe County, IL, St. Clair County, IL, Franklin County, and Jefferson County, and each of those keeps its own parcel map. A tract near the line by Lakeshire may be split in two county records, so open the neighboring map before you assume the acreage. Closer to Kirkwood, the Platbookmapper state page lists every neighboring county map across Missouri.
City limits and county records
Sunset Hills sits in St. Louis County, Missouri, which means parcel data comes from the county. If the land is near Crestwood, city or town hall handles things like zoning, permits and utilities within town limits, while the county keeps the tax map. Land beyond the town limits near Fenton generally answers to county rules rather than the town's.
St. Louis County in a few facts
Clayton serves as the county seat, where most land records are kept. Other places on the map include Fenton, Crestwood, Grantwood Village, and Kirkwood, where town lots give way to larger tracts. Roughly 987,059 people call St. Louis County home (Census estimate, 2023) spread over about 508 square miles. The county was organized in 1812, and some chains of title near Lakeshire are long. Places such as Spanish Lake Park and Babler State Park are easy to spot when you zoom out from Fenton.
Decoding the flood zone labels
For a home near Fenton, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. Closer to Grantwood Village, shaded Zone X is moderate risk, between the 1% and 0.2% annual chance floods; unshaded X means minimal mapped risk.
Parcel lines plus flood zones
FEMA's map shows zones but not ownership, so open the St. Louis County ArcGIS parcel map next to see exactly which lot near Fenton you're looking at.
Which office to call
Deeds, mortgages and recorded plats for land near Grantwood Village sit in the index kept by the Recorder of Deeds, often with an online index. Questions about what you can build around Fenton are for the local planning and health departments, town or county, depending on location.
What to request from a seller
Request whether the home has flooded on the property near Lakeshire; getting a quote early keeps the budget honest.
Money questions tied to the zone
Out toward Lakeshire, get the Elevation Certificate if one exists: it records the building's elevation against the base flood. Building or adding on near Fenton in a mapped zone often needs a floodplain permit; ask the local floodplain administrator early.
Taking the map into the field
Most viewers work in a phone browser, useful out on a road near Kirkwood, so load it before you lose signal. A screenshot of the parcel near Lakeshire with its ID is a good backup.
Questions about the Sunset Hills flood zone map
Do I need to worry about flooding in Zone X around Kirkwood?
In most cases, Zone X near Kirkwood means moderate (shaded) or minimal (unshaded) mapped risk; many owners near Grantwood Village buy coverage anyway.
What is a LOMA in Sunset Hills?
You can ask FEMA for a LOMA if surveyed elevations show the building near Lakeshire is above the BFE, and lenders accept the result.
Is there a flood layer on the parcel viewer near Fenton?
It depends, but a flood layer may appear in the St. Louis County ArcGIS parcel map layer list, but FEMA's own map is the official source.
What is a base flood elevation in Sunset Hills?
For most people, the BFE is printed in AE zones on FEMA's map; surveyors near Grantwood Village use it often.
Is there an app for the parcel map near Grantwood Village?
For land near Crestwood, most viewers run in a mobile browser; screenshots help offline.
Open the official St. Louis County, MO parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.