The advise that you get from houzz.com is from professionals like myself and also from people who aren't professional but who enjoy commenting. The site is not really set up for solving very complex designs such as a complete house. I enjoy taking a few moments out of my busy day helping out when I can, but there is no compensation involved and I can't spend much of my time here.

Houzz can also be used to find a professional to hire in your part of the world. We have clients who have found us through houzz. I don't know if there is a pro near you, but hopefully you can find a local architect for you to help you design your house.

Of course you can post any questions that you have and you never know what great answers you will get.

You can commission a concept planner to help you workout what you want for the whole house ?! there are a few on her, myself included... I don't know how the others charge - but I go on a room by room basis - with an overall discount for an entire home !
Producing CAD images that will show generic colours and furniture - and specific or generic kitchens, bathrooms, bedrooms etc ! click on my name to see some images on my pro page ! or drop me a line for my info PDF !
:-)

Since most houses shown on this site are custom designed, it's different than ordering from stock floor plans. Contact the designer of the project(s) you are interested in and see if they are willing to sell you a floor plan.

There are companies that offer pre-designed plans for sale that come with all the details you mentioned! We have a variety of plans and you can see some of the finished products in our projects here on houzz. Our plans are very comprehensive and every aspect of the house is adressed (interior and exterior) - except colors.