Dave has given some good advice here, kudos Dave, and I wish you the luck of finding an arborist with such a kind and permaculture oriented heart near you. Falling trees in an Urban area in the US is a veritable shitstorm of liability issues... It is worth doing the research and checking with the companies in your area but I think you may be hard pressed to find someone who will pay you for the trees. Timber companies will probably be uninterested in such a small cut and most arborists will charge to cut down trees in an Urban area even if you let them keep the wood as dealing with the fallen trees is seen an added expense, not as potential profit.
From the picture, it looks as if the trees could be dropped onto the open lawn behind them...If this is the case, I'd go with the DIY option. Start in your community zone 1 and work outwards to see if you can find someone who has the ability to drop these trees safely. If they can be processed, stored and seasoned on site to be sold next year as processed ready to use timber you may be able to obtain a yield from these trees that way.
If you do not have folks in your network to help you process the lumber, you may be hard pressed to find someone to cut these trees without YOU having to pay THEM for their trouble. In this case, I would let them grow. They are beautiful Oak trees and if you or someone in your community does not have need for the lumber let them stand! they are doing far more good as living standing trees than as cut lumber. I think that you may be able to get better yields out of these trees if you let them live. I wont go into too much detail about the various uses of a living oak tree in this thread as it is specifically about woodworking and harvesting urban lumber but it might be worth doing some research into other ways of obtaining yields from these oaks without cutting them down for lumber. (I can think of quite a few and if you want some ideas feel free to message me about them