Land Surveyors in St. Louis City, Missouri
St. Louis City is an independent city, not part of St. Louis County. It separated from the county in 1876 and has maintained its own government, assessor, and recorder of deeds ever since. This matters for property owners: plat records, deed history, and assessment data for St. Louis City properties are held at city offices, not at St. Louis County. Surveyors who work regularly in the city understand this distinction and know where to pull the historical records that make urban boundary work accurate.
15 licensed land surveyors serve St. Louis City. That is a smaller pool than Jackson County, reflecting the city's size, but it covers the full range of survey work the urban market requires.
Why Property Owners in St. Louis City Need Surveys
Urban Boundary Disputes in Historic Neighborhoods
Soulard, Lafayette Square, Compton Heights, The Hill, and Cherokee Street are among the oldest residential neighborhoods in Missouri. Lots in these areas were platted in the 1800s, and a century or more of improvements, additions, fence placements, and alley encroachments have created boundary situations that only a current survey can clarify. Narrow urban lots with party walls and rear alley access are especially prone to these issues.
Historic building line setbacks in City-landmark districts add another layer. The St. Louis City Cultural Resources Office regulates changes to structures in local historic districts. A current survey may be required to confirm setback compliance before a permit is issued.
Mississippi River Flood Zone Work
The eastern edge of St. Louis City runs along the Mississippi River. While levees protect portions of the riverfront, parcels inside the levee-protected area are still classified within the Special Flood Hazard Area under NFIP rules and require flood insurance if they carry a federally backed mortgage. Surveyors in the city complete elevation certificates for these properties to document their flood risk status and support insurance rate adjustments.
River des Peres Floodplain Mapping
The River des Peres is a channelized waterway that flows through the southwest portion of St. Louis City before emptying into the Mississippi. It has a significant history of flooding and carries FEMA Zone AE designations through neighborhoods including Carondelet and Lindenwood Park. Homeowners in those areas frequently need elevation certificates when buying, selling, or refinancing a property in the floodplain.
Commercial Development in Midtown and the Cortex Innovation District
Midtown St. Louis and the Cortex Innovation District, which sits near the Forest Park and Washington University Medical Campus area, have been active zones for commercial and biotech development. ALTA/NSPS surveys are required for commercial closings in this corridor and must meet national standards. These surveys cover boundary, easement, utility, and encroachment issues across often complicated urban parcels.
How to Use City Records Before Hiring a Surveyor
Before contacting a surveyor, check the St. Louis City Recorder of Deeds at stlouis-mo.gov for any prior plats or surveys on file for your property. The St. Louis City Assessor's property search can give you the parcel ID and legal description. Prior surveys on file can reduce the time a surveyor spends on research and may lower your total cost.
Do not use St. Louis County records for city properties. The two jurisdictions maintain entirely separate databases, and county records will not include St. Louis City parcels.
Verifying a Missouri Surveyor's License
All land surveyors in Missouri must hold an active Professional Land Surveyor license under Chapter 327 RSMo, issued and regulated by APELSLA. Every surveyor in our Missouri directory is sourced from state licensing records before hiring. An unlicensed person cannot produce a legally valid survey in Missouri.
Find a Licensed Surveyor in St. Louis City
Our land surveyor directory lists licensed Missouri PLS professionals serving St. Louis City, with experience in urban boundary surveys, historic neighborhood work, Mississippi River flood zone documentation, River des Peres elevation certificates, and commercial ALTA surveys in Midtown and the Cortex district.