What each tool actually does
A property line app like Landy's property line finder draws the parcel polygon from county GIS data on top of a base map. It is fast, free or cheap, and works on a phone in the field.
A land survey is a measured inspection performed by a licensed surveyor. The surveyor sets monuments, calculates corners from the deed, and signs a plat. That stamped document is what title companies, courts, and building departments rely on.
When a parcel app is enough
- Researching a property before you visit or before you make an offer.
- Estimating acreage and lot dimensions.
- Walking a rural lot to understand layout, access, and road frontage.
- Discussing approximate boundaries with a neighbor or realtor.
- Filtering candidates from a list of properties to inspect later.
When you need a licensed surveyor
- Placing a fence, wall, or driveway near the line.
- Resolving an easement dispute with a neighbor.
- Construction setbacks, additions, or new structures.
- Splitting a lot or merging two parcels.
- Anything that ends up in a real estate contract or court filing.
How they work together
The right workflow is to research with the app and confirm with a surveyor when the stakes get real. The app shortlists properties and frames the questions. The surveyor answers the questions that need legal weight. Skipping either step is the expensive path.
Cost and time
A parcel app is free to view on Landy. A boundary survey typically runs from a few hundred dollars on a simple urban lot to several thousand on a complex rural parcel, and the surveyor usually needs one to three weeks. Match the tool to the question.
Key takeaways
- Parcel apps answer research questions. Surveys answer legal questions.
- Use the app to shortlist and orient. Hire a surveyor before you build or sign.
- Apps are free or cheap and instant. Surveys cost money and take time, by design.