There really is no appreciation value for your modern kitchen or any types of upgrades that are done to the home. Homes are valued based on size, location and condition what comprable houses in and around the home area are selling for. The concept that these upgrades bring value; would apply only to the person who would like your exact taste or prefrences. Most buyers make personal changes to the home to there likes. Hope this helps you. If you have any questions or would like a free market analysis to see what your home would sell for please contact me direct , I am happy to help.
You can do some things that will make the kitchen and bath shine:
New knobs on the drawers and the cabinets. New faucets. New light fixtures, New mirror in the bath.
Flooring should be cleaned and polished. And never underestimate the power of a fresh paint job!
Much Success to you.
Kawain Payne, Realtor
From what you decribe as your objective, to make each room ULTRA MODERN, it does not matter what the existing stlye is....YOU ARE GOING TO GUT THE PLACE.
Based on this, you should find the home with the lowest price, even in the worst condition, make the hardest offer, take the bank to the cleaners, and celebrate.
Your understand, for you being outdated or trashed should not matter, you intend to start from ground zero and make it Untra Modern.
There are other dynamics that must be taken into consideration. A local professional is the best source for evaluating how these issues can influence your goals.