OK, let's pretend this is your yard...

[tribe_fan]

There usually is a 10 foot rule (most cities) for ANY structure (fence, house) that you should be aware of. This also applies to overhead wires. (I saw the power pole in one of the pics - but could not tell if it goes over your yard.

Talk to your building dept to get a list of rules before buying anything.

After that - I think I would look at an oval vrs a round pool. I think you get more pool with an 18x30 vrs a 27 foot round, and lose less yard.

[philamom]

Thanks for the advice.

Past my deck the yard itself is 57 ft L x 44 ft W. Still unsure what size but I know I want to do it as close to the right side fence as possible (we need to be 4 ft from the property line/fence), and we will move the swing set to the other side of the tree

[GraceByDesign]

I would go with the largest oval you can comfortably afford. I've never heard anyone wish they had a SMALLER pool!

[CarlD]

Oval or rectangle. A round will eat up too much of your yard.