Answers (6)
Best Answer

- Jeffrey Hogue, "JeffreyHogue"
- Contributions:2020
The aerial view is mostly determined by the tax mapping. It is NOT an official survey. If you are concerned that the neighbor has encroached on your property you should hire a surveyor.
2 to 6 inches is not much of an encroachment. It could be more trouble for the neighbor. Whoever buys your home could make them move the encroachment. In order to clear the issue you should have a survey done.
2 to 6 inches is not much of an encroachment. It could be more trouble for the neighbor. Whoever buys your home could make them move the encroachment. In order to clear the issue you should have a survey done.

- Teri Arbogast & Team, "Teri Arbogast"
- Contributions:3802
not official but pictometry is used by many counties
All of these are great answers. Bottom line, get a survey.
In addition, you can use this as a selling point to the prospective buyer. If you can show the buyer, that you have a recent survey done. They can most likely wave the cost on their purchase of your home. Might give you an edge in this market..you never know.
In addition, you can use this as a selling point to the prospective buyer. If you can show the buyer, that you have a recent survey done. They can most likely wave the cost on their purchase of your home. Might give you an edge in this market..you never know.

- marigolds6
- Contributions:17
For aerial photos to be accurately aligned, the vendor needs to do a ground survey. This ground survey allows the photos to be "rubber-sheet" warped to match ground truth coordinates. This results in a degree of accuracy to the photos, normally given a National Map Accuracy or ASPRS Accuracy designation.
This accuracy designations are only applicable in the projection that the photos are originally supplied (generally zoned Universal Transverse Mercator).
The birdeyes view (aerial oblique) photos used by Zillow are aligned without a ground survey. There is no accuracy standard to them, and they can be off by a considerably distance from the real coordinates. Meanwhile, the top down aerials supplied by Bing have been reproject to a projection called Web Mercator which is not spatially accurate. This destroys the original spatial accuracy of the photos, as well as degrading the accuracy of the parcel lot lines (which were generally originally done in a State Plan projection).
So, if you were aligning the parcel lines with the top down aerial photos in their original UTM, you would probably have high accuracy between the photos and the lot lines. That is not what you see on Zillow. These are basically approximations with no accuracy statement to them. It is even possible to have a global coordinate system mismatch (such as North American Datum 1927 lot lines with North American Datum 1983 aerial alignment) that will create the 50'+ line slips that wetdawgs was talking about.
This accuracy designations are only applicable in the projection that the photos are originally supplied (generally zoned Universal Transverse Mercator).
The birdeyes view (aerial oblique) photos used by Zillow are aligned without a ground survey. There is no accuracy standard to them, and they can be off by a considerably distance from the real coordinates. Meanwhile, the top down aerials supplied by Bing have been reproject to a projection called Web Mercator which is not spatially accurate. This destroys the original spatial accuracy of the photos, as well as degrading the accuracy of the parcel lot lines (which were generally originally done in a State Plan projection).
So, if you were aligning the parcel lines with the top down aerial photos in their original UTM, you would probably have high accuracy between the photos and the lot lines. That is not what you see on Zillow. These are basically approximations with no accuracy statement to them. It is even possible to have a global coordinate system mismatch (such as North American Datum 1927 lot lines with North American Datum 1983 aerial alignment) that will create the 50'+ line slips that wetdawgs was talking about.

- wetdawgs
- Contributions:39617
The plot lines on the satellite views on Zillow are approximate. They often have basically the right shape of the lots, but in several locations I've noticed that the lines have slipped as much as 50 feet. The parents' house is a good example, the lot line on the satellite view used to cut the house in half. It is gradually (over the last year) shifting closer to the real surveyed lot line but still is ~ 10 feet off.
If you wish a true survey for actual lot lines, you will have to hire a surveyor and use the plot maps filed in your government offices.
If your neighbor has encroached several inches into your property with a new driveway, this is something to start negotiating a fix immediately because if it comes up in the sale it will hold up the sale until it is fixed (and that can take a long time).
If you wish a true survey for actual lot lines, you will have to hire a surveyor and use the plot maps filed in your government offices.
If your neighbor has encroached several inches into your property with a new driveway, this is something to start negotiating a fix immediately because if it comes up in the sale it will hold up the sale until it is fixed (and that can take a long time).

- James Callas, "ABBAUSA"
- Contributions:1057
Aerial views can be off by quite a bit.
Try to determine who is furnishing the aerial view.
Go to that vendors website and see if you can locate your property on that site. Most of the time you can edit/drag your location to the correct location. Save this revision and test for results.
If still not correct send email to customer support for the map vendor.
Good Luck!
James Callas - Realtor®
Try to determine who is furnishing the aerial view.
Go to that vendors website and see if you can locate your property on that site. Most of the time you can edit/drag your location to the correct location. Save this revision and test for results.
If still not correct send email to customer support for the map vendor.
Good Luck!
James Callas - Realtor®



How is the aeral view of home determined? Is it considered a accurate plot plan?
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