We have traditionally gardened 2 quarter acre sized lots (fenced in to keep the deer mostly out).
Couple years ago, we built a 20x36' hoophouse with raised beds to extend our gardening on the front and back end of our typical May-October growing season. It has worked out so well, we find we're raising much of our grown food needs with it.
The ground slopes about 8' in the 20' width direction (mountains of East Tn, flat ground is hard to come by). I dug into the upper side so that side is basically 3' below grade, and used 8" block for the outside walls, with 1" foam board on the inside of the bed to help keep soil temps up inside.
Inside, the bed wall is 4" block, in a U shape around the house, front open. Beds are 32" deep (about the most we can reach easily front to back), fill with local dirt about 2/3 way up, then a mix of peat moss, sand, dirt and vermiculite.
The knee wall on the outside is the start of the hoop house. You can see our traditional garden areas down and back to the right.
For water, I ran a 3/4" pvc line mounted in the inside of the beds with quick connect hose points. The pipe slopes all the way back to the start point so it can be completely drained in the dead of winter when we don't use the house much.
This are the hoops in place, laminated white oak arches we built in the yard in front, installed on the knee walls. Covered with a double layer of 4 yr greenhouse plastic and run an inflator fan to tighten them up and help with insulation.
The first year, we were going into fall as we got the house done, so we just used the U bed (which you can see planted before we even got the hoop up) around the outside walls.
On the lower side of the house, also put a raised bed for strawberries. Length on it runs about 75' (the retainer wall below is longer than the hoop house). Got 25 gallons of strawberries out of it this past year !
Traditional row garden below, can also see the strawberry bed.
The next year, decided to use the center section as raised bed, and pour concrete floor. The PEX tubing is for in floor heat. It also runs in the U beds around the outside walls.
Middle bed is 5' x 22'. 4" block.
In full production various times: