Depending on how far in the future the build-out takes place, put in the rough plumbing for the bathroom and leave the rest open for maximum flexibility. Build the wine cellar now, 7' x 12'.

Thanks!

Will you have lolly column posts in the basement? Is so knowing where those will be are important component to determining the layout.

I would plan some larger support beams so you don't have to have lolly column posts dictating the layout of the basement.

Does the mechanical room need to be in that corner? If not, I would try to put it inside the back jut out. That'll help square the room off and not eat into the larger rectangular area you have on the right side of house, which makes it more awkward.

Also, have you asked your HVAC contractor or builder about where to put the inside unit if you'll have one of those? A lot of times, they want those more centered in the house so that you can have a large trunk line down the middle. Because of that, our inside unit will be housed under our steps. We also ended up doing two 200 amp electrical boxes instead of one 400 amp so that we could space them to have fewer long home runs with the wiring. You need to take all this into consideration when planning your basement if those items will be located there.

Lally columns are definitely crucial and you'll need to know exactly where they will be located before you can really plan the place.

AS noted above (or maybe below in Houzz's latest schema) work from the actual architect's plan to begin with showing beams and support columns. Then either work around them. Or as others have said, re-configure them to match your projected uses.

Thanks for the advice! I’ll wait until I have the final architect plans and then repost :)

Consider involving a local architect in the entire design of your home, each floor and to the property line, all at the same time. One thing they may suggest is locating the mechanical room as close to the center of the house as possible.

Thanks Mark