Staking Building Corners and Offsets with GPS

What are your thoughts on this? Does anyone stake building corners with GPS? Currently, were I work we only stake building corners with a total station. I feel GPS, in most cases is capable of meeting the exactness needed. Obviously if you're near a building or trees where error may be high conventional may be the way to go, but I'm curious to know what others may think.

Something to watch for is scale factor.  I've had one where the lot was 5cm bigger than plan, and would have had me stake the building as if it was 2cm bigger if I wasnt on the ball.  Creating a point in the collector 5cm out and localizing on that instead gave the same effect as if I was using a total station and stacking off the sideline.  I've always setup a total station on my offset pins to make sure the dimensions and angles are ok.  Definitely don't want a contractor finding sloppiness.

Generally, I've only found gps staking to be handy when there is shiat aallll over the damned site, making it a pain laying out with a total station.

In my experience, no.  I assume you are talking RTK, which I'd check with the total station and at that point you might as well have just used it in the first place.  Sure this would be close enough for trenching in footings, but the next thing you know those offsets will be pulled off of for a column line and then the tolerance slop will start to show.  Even had it happen with radial stakeout from a 2" total station.  Be safe and make sure you and the Contractor (as well as the written contract) have clarity on the tolerances required for the project first and then maybe you could consider GPS.

There's no way in hell I'd stake building corners with GPS.  The corners of the pad?  Sure, but not the building itself.

No way would I ever stake a building with GPS.  Most of the time I find GPS off 0.05' to 0.12' on each point.
Try it and check it with a steel tape to verify.

It depends on what you are staking for the building. If it is just the envelope so the contractor can set his forms, I wouldn't have a problem with that. If the control set will be used for column lines or interior wall layout, then I wouldn't recommend using GPS.

thanks everyone for the input.