jeff See the link below - probably the best resource available that provides details on how to build a wine cellar. I am in the process of building one right now - similar situation as you - except that I want to do preserve some of my wines that will be at their peak at 10 to 15 years old. Below is a a description of what I am doing which is based on reading the book and adapting it for my needs and situation. My basement corner is completely below grade and I actually have 3 walls that are cement - like a big nook. - The cement foundation walls currently have fiberglass with silver paper on it. I am taking that down and putting up 1/2 inch XPS foam board to provide a vapor barrier. I wanted to use a thicker foam board but the prices are very high so I went with 4' x 8' x 1/2 inch interlocking board sold by Lowe's. - stud walls along the foundation will be framed with 2x6, cavities filled with R19 insulation. There will be a 2 inch air gap between the stud walls and the XPS. - ceiling joist cavities will first get a 6 mil plastic vapor barrier, then joist cavities will be filled with fibeglass rolls without paper vapor barrier. - the front wall will be a double wall framed with 2x6's. The 6 mil vapor barrier will go on the outside of the wall (the front of the wall on the basement side), stud cavities filled with fiberglass rolls without vapor barrier). - interior walls will be covered with cement board. I plan to use a venetian plaster product to cover the cement board and give the room an old world look. - floor is acid stained. I went this route instead of tiling to lower the cost and I thought it would look better, and it does. - ceiling tiles will be made from bead board and stained/sealed. I plan to make the tiles removable so I can access the ceiling cavitities since I have water pipes up there. I will be making some fake beams with cedar boards to break the ceiling up into rectangular sections that get the beadboard panels. - the door will be an exterior entrance door, probably a fiberglass product that can be stained to look like wood. - I plan on installing a humidifier but no air conditioning system. If all you want is a room in the basement that you happen to place wine in, then you could just put XPS foam board on the cement walls, framing in front of that, and then standard dry wall. Adding the plastic vapor barrier, insulation, and cement board does take a little more time and money but in the grand scheme of things not that much more. Here is a link that might be useful: How to Build a Wine Cellar

You could always do what one distillery did in their aging house. They put in a chiller unit to recover the alcohol that escaped the barrels and was present in the sir in the aging house. Of course, this disturbed the equilibrium and even more alcohol evaporated. The barrels showed higher losses during aging (called the 'angels share'). They did recover the alcohol they lost, but decided it was upsetting the aging process and affecting flavor. Talk to your local AHJ, but they are unlikely to have any real requirements for a wine cellar beyond lighting and structural safety. Cool, dark, damp, and stable are the desired environment.

You get the maximum storage if you use bins because you don't waste as much air space. The downside is that you can't easily get to the bottom bottles and you really will be cursing when you try to stack a bunch of Rhone or Burgundy shaped bottles. The alternative, which I use, is shelves that are spaced about 3 3/4 inches apart. I just made them. A Bordeaux bottle is about 3 inches diameter, a Burgundy bottle is about 3 1/4 inches so 3 3/4 gets you enough space. Then space a couple of shelves over 4" for weird shapes like Turley, Pax, Champagne, some Beaujolais, or some other big bottles, or bigger if you tend to buy mags. I just took plywood, ripped it to 9" and built shelves for the wines myself. Alternatively, there is IWA that has pretty good prices but you pay for shipping, and there other places that sell racks. My suggestion if you have time is to check out some local restaurant supply places - they often have things like that.

IMO we need a bit of info . 1st what do you need in way of storage like how many bottles for sure. Why do you need custom , there are 100s of beautiful wine racks to be found that are not custom. Are you having a tasting space in the wine cellar. What is your style ?