The Direct Answer
You can walk your property, find old stakes, read your deed, and look at county GIS maps. None of that is illegal. What you cannot do is produce a survey document that has any legal standing in Florida. Under Florida law, only a licensed Professional Surveyor and Mapper (PSM) can certify a boundary survey. Anything you create yourself, regardless of how carefully you measure, is not a legal survey and cannot be used for permits, closings, resolving disputes, or recording in the public record.
That distinction matters because a lot of DIY boundary research leads people to false confidence. You might locate what looks like a corner pin and feel certain you know where your property line sits. But without a licensed surveyor verifying that pin's position against the deed, the plat, and neighboring parcels, you have no way to know whether that pin is in the right place, set by the right person, or still accurate.
What Florida Law Actually Says
Florida Statute Chapter 472 governs the practice of land surveying and mapping. The relevant section defines surveying as including any activity that determines or establishes the position of points, boundaries, or areas of real property. It specifically states that only a person holding a valid PSM license from the Florida Department of Business and Professional Regulation (DBPR) may perform, supervise, and certify surveys for legal, permitting, or financial use.
Practicing land surveying without a license in Florida is a second-degree misdemeanor for a first offense and escalates to a first-degree misdemeanor for subsequent violations. This does not mean you will be arrested for walking your own land with a tape measure. It means that any document you produce claiming to be a survey has no legal effect and could create liability if someone else relies on it.
The PSM license is not easy to obtain. It requires a combination of education (typically a bachelor's degree in surveying, geomatics, or a related field), supervised field experience under a licensed PSM, and passage of the national fundamentals and principles and practice exams. Florida also administers its own jurisprudence exam. The process typically takes four to six years from start to license.
What a Licensed PSM Does That You Cannot
The gap between what a property owner can do and what a licensed PSM can do is significant.
Legal Certification
A PSM can stamp and sign a survey drawing, which makes it a legally certified document. That certification is what gives the survey weight in court, with lenders, at the permit office, and in the public record. Without it, the document is just a drawing.
Monument Setting
When a PSM sets an iron pin or concrete monument at a property corner, that monument becomes part of the official public record of the property. It carries legal significance. A stake you pound into the ground yourself has none. If your neighbor disputes your line, your homemade stake is not evidence of anything.
Deed and Record Research
A PSM interprets legal descriptions, traces chains of title, resolves conflicts between older deeds and modern plat maps, and understands how the government survey system works in different parts of Florida. This research is often the most complex part of a survey, and errors here lead to lines being placed in the wrong location.
Expert Witness Testimony
If a boundary dispute goes to court or mediation, a licensed PSM can testify as an expert witness. Their certified survey is admissible as evidence. Your own measurements are not.
Plat Creation
If you want to divide your land into separate lots, a plat document must be created by a PSM and reviewed and approved by the local government before recording. This is a function that is entirely inaccessible to unlicensed property owners.
DIY Methods for Finding Approximate Boundary Lines
While you cannot produce a legal survey yourself, there are legitimate tools for getting a rough sense of your boundaries. These are useful for personal planning, not for placing fences, making permits applications, or resolving disputes.
County GIS and Property Appraiser Websites
Every Florida county has an online property appraiser or GIS mapping system. Enter your parcel ID and you will see a map showing the approximate boundaries of your property overlaid on aerial imagery. These maps are based on recorded plat data and parcel sketches and are useful for understanding the general shape and size of your lot. They are not precise enough for any purpose where accuracy in feet or fractions of a foot matters.
Reviewing Your Deed and Plat
Your deed contains a legal description of the property, either as a lot and block number on a recorded plat (common in subdivisions) or as a metes and bounds description (common in older, rural, or irregular parcels). The recorded plat for your subdivision, available through the county clerk's office or online records, shows the dimensions and layout of each lot. Reading these documents gives you a framework for understanding your property's boundaries, but translating them accurately to the ground requires training and equipment.
Looking for Existing Monuments
Prior surveys often left physical markers: iron pins (rebar or steel rod), concrete monuments, or wooden stakes. These are typically set at property corners and can sometimes still be found by searching carefully along where you expect the corners to be. A metal detector can help locate buried iron pins. Finding an existing monument gives you a starting point, but you cannot know without a licensed surveyor whether that monument is in the correct position or has been disturbed since it was set.
Comparing Adjacent Fences and Hedges
Existing fences and hedges are not reliable indicators of property lines. They may have been placed based on a neighbor's guess, an old informal agreement, or simply convenience. Fences that have been in place for decades are sometimes close to the property line, but they are not evidence of where the line legally sits.
When You Absolutely Need a Licensed Surveyor
No amount of DIY research substitutes for a licensed PSM in these situations:
- Building a fence: Without a certified survey marking the property line, you are guessing. A fence built on the wrong side of the line may need to be removed.
- Adding a structure: Any permitted structure requires compliance with setback requirements measured from the certified property line. A permit office will not accept your own measurements.
- Resolving a neighbor dispute: A dispute over a boundary can only be resolved with a certified survey. Courts do not accept a property owner's personal measurements as evidence of the boundary location.
- Buying or selling land: Lenders and title companies require certified surveys, not owner-produced documents.
- Dividing land: A subdivision plat must be created and certified by a PSM. There is no self-service path here.
- Flood insurance and elevation certificates: Elevation certificates must be produced by a licensed surveyor or engineer. There is no DIY version accepted by FEMA or insurance companies.
How to Verify a Florida Surveyor's License
If you hire a surveyor, verify their license before signing anything. The Florida DBPR maintains a public license lookup at myfloridalicense.com. Search for the individual surveyor's name or the firm. Confirm the license is active, the license type is PSM (Professional Surveyor and Mapper), and there are no disciplinary actions on file.
Never rely on a survey document that is not stamped and signed by a currently licensed Florida PSM. An expired license, a license from another state, or an unlicensed person claiming to perform surveying all produce documents with no legal standing in Florida.
The Practical Bottom Line
Use county GIS maps, your deed, and your recorded plat to orient yourself on your property. Look for existing corner monuments as reference points. But when any decision with real consequences depends on where your property line sits, hire a licensed Florida PSM. The cost of a boundary survey ($350 to $700 for a typical residential lot) is trivial compared to the cost of relocating a fence, losing a permit, or fighting a boundary dispute in court.
Find licensed Professional Surveyors and Mappers in your county on the directory and get quotes from surveyors who know your local area.