Post by Brent George on Apr 29, 2019 20:26:33 GMT
This is a really interesting case reported in the American Surveying publication "POB" about utilising a combination of on-line data to report where property boundaries "are". Point of Beginning: April-2019
(Thanks Murray for sharing the link...)
In this case the data used includes:
It’s got a familiar look about it. It is similar to the stuff peddled here by various agencies - and is similar to the sort of stuff we can produce from Quickmap, Terraview and Google. It is also similar to most on-line GIS viewer tools that Council's have freely accessible within their websites.
It's all based on the LINZ Landonline base data being correct, and that the imagery background is correctly rectified and having a common origin with the LoL data. It’s okay for a general overview but that’s the limitation.
However, without looking at any fine print that may report disclaimers - the general public may then believe that they can “define” their own boundaries.
Accepted that the US surveying process and requirements are a little different to NZ. But the principle remains - When should the digital representation of parcel boundaries within official reports require authorisation by a Licensed Surveyor? OR is it "free speech" as the company is arguing?
PS:
I like the definition of the "practice of land surveying":
The definition of the practice of land surveying includes all activities where the resulting work product represents the precise location of a feature, object, or boundary with reference to the surface or subsurface of the earth and is a work product upon which the public is intended to reasonably rely as being the precise location of that feature, object, or boundary so located. This is true regardless of the technology or method employed. These activities must be accomplished by, or under the direct supervisory control of, a professional land surveyor.
PPS:
And some translations from US Survey English to NZ Survey English:
plat = a plot of land or a map of a plot of land or a survey plan
GIS tax map = A tax map is a special purpose map, accurately drawn to scale showing all the real property parcels within a city, town or village. As a statutory requirement, all US Counties are required to map all taxable property for tax assessment purposes.
NCEES = National Council of Examiners for Engineering and Surveying
(Thanks Murray for sharing the link...)
In this case the data used includes:
- parcel boundary metes and bounds from the public record
- an aerial image background - Google Earth
And so produces a report that purports to represent the extents of the legal boundaries of the property - suitable for lending institutions et al.
It’s got a familiar look about it. It is similar to the stuff peddled here by various agencies - and is similar to the sort of stuff we can produce from Quickmap, Terraview and Google. It is also similar to most on-line GIS viewer tools that Council's have freely accessible within their websites.
It's all based on the LINZ Landonline base data being correct, and that the imagery background is correctly rectified and having a common origin with the LoL data. It’s okay for a general overview but that’s the limitation.
However, without looking at any fine print that may report disclaimers - the general public may then believe that they can “define” their own boundaries.
Accepted that the US surveying process and requirements are a little different to NZ. But the principle remains - When should the digital representation of parcel boundaries within official reports require authorisation by a Licensed Surveyor? OR is it "free speech" as the company is arguing?
PS:
I like the definition of the "practice of land surveying":
The definition of the practice of land surveying includes all activities where the resulting work product represents the precise location of a feature, object, or boundary with reference to the surface or subsurface of the earth and is a work product upon which the public is intended to reasonably rely as being the precise location of that feature, object, or boundary so located. This is true regardless of the technology or method employed. These activities must be accomplished by, or under the direct supervisory control of, a professional land surveyor.
PPS:
And some translations from US Survey English to NZ Survey English:
plat = a plot of land or a map of a plot of land or a survey plan
GIS tax map = A tax map is a special purpose map, accurately drawn to scale showing all the real property parcels within a city, town or village. As a statutory requirement, all US Counties are required to map all taxable property for tax assessment purposes.
NCEES = National Council of Examiners for Engineering and Surveying