How to Find Property Lines by Address
By AcreBound Editorial Team Updated:
Quick Answer
Search the address in a county or app parcel map and it will highlight the parcel containing that point. The outline is approximate, and the address can land on the wrong lot or on several parcels.
Check the parcel number and acreage against your tax bill.
Yes, you can get from a street address to an approximate property line in a couple of minutes. The catch is that the boundary belongs to a parcel, not to an address, and the two do not always match one to one.
Can Property Lines Be Found From an Address?
Yes, with a limit. Mapping tools take your address, find the point on the map where it belongs, and show the parcel that contains that point. The outline of that parcel is the mapped property line.
Two terms matter here:
- Street address. A label used for mail, deliveries and emergency services, such as 123 Maple Street.
- Parcel. A piece of land that the county has recorded as a unit, with its own boundary and its own parcel number (APN).
Often one address equals one parcel. But not always. A single address can sit on two or three parcels, a parcel can have no address at all, and some parcels carry several addresses.
The "find the point" step is where things go wrong. Snohomish County, Washington explains that many online map services match what you type against a theoretical range of addresses on a street and drop the pin where that address might exist. They do not check that the address is real. If the pin falls on the road or a neighbor's lawn, the highlighted parcel will be the wrong one.
Method 1: Use a Parcel Map
This is the fastest route.
- Open a parcel map and type the full address, including city and state.
- Pick the matching line from the suggestions, if the tool offers a list.
- Wait for the map to zoom to the address and highlight a parcel.
- Check the outline against what you can see. Does it include your house and yard? Does it reach the road where you expect?
- Look at the parcel number and acreage shown for it and compare with your tax bill, if you have one.
Those last checks are what tell you the outline is the right one. If the acreage is much smaller or larger than you expected, the address may have landed on a different parcel. A small gap can be normal, though. Sacramento County's assessor notes that assessed acreage can differ from deed acreage, for example because of a road right-of-way.
County viewers can be picky about input. Sedgwick County, Kansas advises abbreviating street directions and leaving out punctuation, and its viewer also accepts an intersection or a parcel ID.
Method 2: Look the Address Up in Property Records
Most county assessors have an online property search. Searching by address usually returns the parcel number, the owner of record, the legal description and the assessed value. You can then use the parcel number to find the parcel on a map, which removes any doubt about which parcel is yours. If you only need the number, see how to find the APN for a property.
Method 3: Find the Plat Map
If the property is in a subdivision, the records will usually name the subdivision, lot and block, for example "Lot 12, Block 3, Maple Grove". Some county viewers, Sedgwick's among them, include a lot-block-subdivision search. Otherwise, ask the county recorder for the recorded plat with those details.
A plat generally shows the lot's dimensions, which is more detailed than a parcel outline. It typically also shows where surveyors set corner pins, but it cannot tell you whether those pins are still in the ground today. For that you need the markers themselves or a survey.
Method 4: Use GPS Mapping
If you are at the property, open the parcel on a map with your phone's location turned on. Some county viewers can find the nearest parcel from your current location on a phone, and so can apps such as AcreBound. You will see your position relative to the outline. This helps you understand where the boundary is as you walk the yard, but it is not exact. Find Property Lines With GPS explains how to use it well and where it falls short.
Why an Address May Not Return a Parcel
When the search finds nothing or shows the wrong thing, one of these is usually the reason:
| What you see | Likely cause | What to try |
|---|---|---|
| No result for a new house | The address is new and has not reached the county's database or the map's address list yet | Search the neighbor's address, or tap the lot on the map |
| The neighbor's parcel is highlighted | The address point landed on the street or near a lot line | Pan to your house and tap it directly |
| "Unit 4B" finds nothing | Several addresses can sit on one parcel, and the county may track only one of them | Search the building's main street address without the unit |
| Rural or recently renamed road is not found | The address list may be out of date | Search by APN, by coordinates or by location on the map |
| Nothing for a vacant lot | Vacant land may have no address on record | Use the APN or the map |
| Odd results for a normal address | A typo, "Saint" versus "St", a missing "N" or "SW", or too much information in the box | Retype with the standard abbreviation and fewer details |
Snohomish County's own help page lists several of these: addresses for new construction that the assessor has not captured, multiple addresses on a single parcel, vacant land with no address, and typed addresses with extra data or misspellings. Coverage matters too. It varies by county, so some places have no parcel data in a given app at all.
If the address fails, try the nearest neighbor's address, or find the property by its location on the map instead. How to find a property that has no street address covers that.
What If a Property Has Multiple Parcels?
This catches many people out. A house, a side yard and a detached garage can each be separate parcels, all owned by the same person and all under one mailing address. If you only look at the parcel the address landed on, you may miss part of what you own. Because assessors often track a single address per parcel, the other parcels may not show up in an address search at all.
Signs there is more than one:
- Your tax bill lists more than one parcel number.
- The acreage on the parcel looks smaller than the land you think you own.
- There are lines inside your yard on the map.
- An adjacent parcel has the same owner name.
How Accurate Are Online Boundaries?
Good enough to see which parcel is which and roughly where the lines run. Not good enough to tell you whether a tree, a shed or a fence is exactly on one side or the other. Snohomish County cautions that aerial photos and parcel lines cannot be used to prove whether one owner is encroaching on another. The reasons are covered in How Accurate Are Online Property Lines?.
When a Survey Is Necessary
Move from a map to a licensed surveyor when the exact line has consequences: a fence on the boundary, a new building near a line, a neighbor who disagrees with you, a sale where the boundary is unclear or a question about an easement. Property Line Map vs Land Survey helps you decide.
Common Mistakes
- Assuming one address always means one parcel.
- Not checking the parcel number or acreage against a tax bill or deed.
- Searching for a unit number instead of the building's street address.
- Treating an outline as the legal boundary.
Frequently Asked Questions
Can I find property lines with just an address?
You can find the mapped outline of the parcel that contains the address. That outline is approximate. Only a survey establishes where the legal line runs.
Why does the map highlight the wrong house?
Most likely the address point landed on the street or near a lot line, or the address is new and the map's address list has not caught up. Tap your house on the map and check the parcel number against your tax bill.
Is my mailing address the same as my parcel?
No. The address is a label for mail and deliveries. The parcel is the recorded piece of land, identified by its APN, and one parcel can carry several addresses or none.
How do I find the property line of a lot that has no address?
Skip the address. Find the lot by tapping it on the map, entering coordinates or searching its APN. The guide on properties with no street address walks through each option.
For the full toolbox, see How to Find Your Property Lines.
Sources
- Snohomish County Assessor FAQ (Washington) Why addresses fail, how online map services place addresses, parcel line accuracy.
- Mobile Land Records Help (Sedgwick County, Kansas) Search by address, parcel ID, intersection, current location and lot-block-subdivision.
- About Assessor Parcel Maps (Sacramento County Assessor) Assessed acreage versus deed acreage; assessor maps are not surveys.