County seat ยท Clayton
Land Surveyor in St. Louis County, Missouri
Surveying across St. Louis County
St. Louis County wraps around the City of St. Louis on three sides, yet the two are separate governments and have been since voters approved the split in 1876. That history matters for anyone ordering a survey. A parcel on one side of the city line has its deed in Clayton, the county seat, while a parcel a block away may be recorded downtown at City Hall. Before a licensed surveyor from our team or network starts research, we confirm which jurisdiction actually holds your land records.
The county is divided among dozens of incorporated municipalities, from tiny villages of a few streets to Florissant, the largest. Each city keeps its own zoning code, building department and, often, its own rules on fences and accessory structures. Large stretches of south and north county remain unincorporated, and there the county government handles subdivision review and permits. Knowing whose code applies is often the first question on a lot split or addition, and the answer changes the paperwork a surveyor prepares.
Water shapes risk across the county. The Missouri River runs along the northern and western edge, the Mississippi along the east, and the Meramec cuts through the south, where repeated floods since 2015 reached homes and businesses in river towns. Smaller streams such as Deer Creek, Coldwater Creek and Grand Glaize Creek drain the built-up interior and can rise fast in heavy storms. Lenders, insurers and floodplain administrators all lean on FEMA maps here, and an elevation certificate is how a land surveyor in St. Louis County, MO answers their questions.
What to know about St. Louis County
City or county jurisdiction
Dozens of municipalities set their own zoning and permit rules, while county staff handle unincorporated areas. Confirm which government covers your parcel before ordering a lot split, plat or permit drawing.
Recording in Clayton
Deeds, plats and easements for county land are recorded with the St. Louis County Recorder of Deeds in Clayton. Property inside the City of St. Louis is recorded with the city instead.
Three rivers, many creeks
Missouri, Mississippi and Meramec river floodplains ring the county, and interior creeks add their own mapped zones. An elevation certificate places your building against the current FEMA flood level.
County land records
County parcel maps
Saint Louis County GIS Service Center
Parcel maps are helpful, but they aren't a survey.
Cities in St. Louis County
- Land surveyor in Chesterfield, MO
- Land surveyor in Kirkwood, MO
- Land surveyor in Webster Groves, MO
- Land surveyor in Ballwin, MO
- Land surveyor in Wildwood, MO
- Land surveyor in Florissant, MO
Also serving Clayton, University City, Ladue, Creve Coeur, Maryland Heights, Town and Country, Des Peres, Manchester, Ellisville, Eureka, Valley Park, Fenton, Sunset Hills, Crestwood, Brentwood, Maplewood, Hazelwood, Ferguson, Bridgeton, Mehlville, Oakville, Affton, Spanish Lake and unincorporated St. Louis County.
Survey services in St. Louis County
St. Louis County survey questions
Is my property recorded in St. Louis County or the City of St. Louis?
They are separate jurisdictions. Land inside the City of St. Louis is recorded with the city's Recorder of Deeds at City Hall, while land anywhere in St. Louis County, incorporated or not, is recorded with the county Recorder of Deeds in Clayton. Your tax bill shows which one collects on your parcel.
My address says St. Louis but I'm not in a city. Who handles permits?
Many county addresses use a St. Louis mailing name even though the land sits in unincorporated St. Louis County. In that case county planning and public works staff apply the zoning and permit rules, not a municipality. Check the county's parcel lookup to see whether a city name is attached to your parcel.
Can I use the county GIS parcel lines to place a fence?
The county GIS Service Center publishes parcel maps for research and mapping, not for staking a line. Those lines are compiled from records and can be off by several feet. A boundary survey by a Missouri-licensed land surveyor locates the legal corners on the ground.
Does the Meramec River flood map affect property far from the river?
It can reach further than people expect, because the Meramec backs up into tributary creeks during major floods. If your lender or insurer says your building is in or near a special flood hazard area, an elevation certificate from a licensed surveyor gives the measured floor heights they need.
Neighboring counties
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