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Post Info TOPIC: is the ruler on google earth accurate?


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is the ruler on google earth accurate?
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I'm working with a customer on a big project, and he tells me his roof is 5000 square foot, I google earth it and measure it and it is 7000 square feet.

He told that he is a civil engineer and that he designed the house and assures me it's only 5000 square feet and that he has the drawling at hand?

my question is, is google earth accurate?



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Clyde, I verified the accuracy of the google earth ruler. It's as good as it gets with what we need it for. Don't forget to use street view to get an idea of the pitch of the roof and how far up the roof the gable runs are.

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Landis Roof Cleaning Eastern Pa 610-689-4475 wrote:

Clyde, I verified the accuracy of the google earth ruler. It's as good as it gets with what we need it for. Don't forget to use street view to get an idea of the pitch of the roof and how far up the roof the gable runs are.


 Thanks Barry!

my street view doesn't work in my area???



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Clyde, we use the property appraisers web site to get s.f. but in some cases have to resort to Google Earth and it's pretty accurate. For kicks, I did a quick take off of my own house and had a 62 s.f. difference. that roughly only and 8'x8' area not including pitch. He might be giving you "under air" numbers and leaving out the "auxiliary" s.f. which could be the garage, front porch, roof over screened in porch or deck.



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Here is one that is similar to what you migh be dealing with. After looking at the building sketch on the property appraisers office, the auxiliary s.f.  below is made up of the garage and open porches that are all under the roof.

 

2011 Building Information

Property Use :   0100 - Single Family Residential

   
Actual Year
Built
Base
SQ Ft
Auxiliary
SQ Ft
Millage
Code
Classified
Use
Number of
Buildings
200750731740101

 

 



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lol exactly!



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I just had a a pitch that raised the sq ft by about 1000

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I had mentioned this in the calculator thread. Never go by the sqft that the customer tells you.If they insist then just agree & give them your price based on your sqft. The sqft is not important in the end but the price sure is.


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aaron61 wrote:

I had mentioned this in the calculator thread. Never go by the sqft that the customer tells you.If they insist then just agree & give them your price based on your sqft. The sqft is not important in the end but the price sure is.


 Right on, I refigured the square footage I was about eight hundred high, but I always round up. So me and the owner are in the middle. No biggie.

but serioulsy isn't that google earth ruler exact when measuring from point A to B?



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It can be dead on or way off. For roof cleaning it's ok but I would never trust it with a roof installation or anything of that nature.

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