can someone on here give me the accurate dimensions for a concrete teebox

I've seen them all different sizes, but the ones we put in last year here in San Angelo are 4' across the front, 12' long, and 6' across in the back. 4" deep....well 3 1/2 I guess( we used 2x4s for the frame). Worked out to be almost a yard per box.

I have seen them as short as 8' or 10' though.

5 foot wide and 10 or 12 feet long is good for just about any hole...

you building some? maybe you could do some at pease in the middle of the night when no one is watching???

From the PDGA's Course Design recommendations

TEES:
Hard surface tee pads of textured cement or asphalt are preferred. Preferred size is 5 ft wide by at least 12 ft long (1.8x3m). Maximum size is 6 ft wide by 20 ft long with the back end flaring out to 10 feet wide. If you need to conserve materials, make tee pads shorter on short or downhill holes and longer on long holes. For example, a hard surfaced tee pad at the top of a hill on a short hole might only need to be 8 ft long because players will just stand at the front edge of the tee to make their throws.