This is not acceptable work. Notify your contractor, see if he will rectify the issue. It wouldn't matter if you paid $10. This is just not a professional outcome.

Completely unacceptable. Insist he returns and completes this work properly.

Get a larger wall plate and use longer plate attachment screws. It'll likely be fine.

Again, larger plate, longer screws.

Yes, I have been trying to get him to come back to finish small things for a year! Silly things like install the rod to hang clothes in the closet and install the shelves between 2 sets of wall cabinets. All things that were in the original contract. The outlets are the things that are most noticeable to me and demand attention!

Track him down at his current job site. He probably doesn't want new customers to hear about his unacceptable work.

Debbie, I know it does you little good, but this is the kind of thing a good designer or general contractor prevents by looking into the future and specifying a continuous plug mold at the cabinets and eliminating the duplex receptacle from the wall. Your picture is lack of comprehensive thinking personified.

Are you the Tupperware lady that married my cousin Steve? Was my wife (Lynn Anne Smith) in your class at Clay High School?

No, I'm not a Tupperware lady. But she and I both wish you had been around to do my basement finish! :-) Thanks for your comments. Its not the only poor planning that occurred, unfortunately.

PFF, who makes the extender that you posted the picture of? It looks more substantial than the one I have seen on line and I would like to puchase the one you have shown. Thank you!

Morris 36510 1-Gang Weatherproof Extension Ring

Longer screws with washers to install switch, oversize plate to cover hole, and paint to match stone

looks great, but my stone is not flush, so I think we will have to use the previous suggestion of grouting around the switch plate.

"PFF, who makes the extender"

I see a link has been provided, but these are generic and made by many companies.

They are intended for exterior use where they are exposed, so are nicely finished and heavy duty.

Try to find a cover that comes to the edge of the extender with little or no overlap.

To me, this is simply an appearance issue and easily fixable.

First, remove the cover plate and use patching compound or joint compound to mask that wire mesh. Then paint and put the cover plate back on.

Second, don't bother with box extenders, etc. What you have after fixing the esthetic problem with the mesh showing are recessed receptacles. That's especially useful when you have furniture or countertop appliances you want to place as close to the wall as possible. If you look at it that way, you can make lemonade out of these lemons without a lot of unnecessary work.

Measure from the face of the rock to the electrical box. Take off the one piece of store veneer and get the proper depth mud ring. You can buy these at any big box store.