In this picture is the door to the very right inside or outside?
And if outside could a truck back up to it? If so someone should be able to get in there with a high lift. I know could probably get in there with a high lift.
Note I don't deliver anymore... Any windows to the left a truck can back up too?
Other that that unless you find someone with trailer or consider reconfiguring it the only other option is wheel barrowing it. That's not too bad in garage because what you do is set the chute up on small ladder or whatever, that will get it half way there. At least it's in the garage and easy to clean up. I've done that for few customers but they always helped, it's not something I would do on my own and if I had too the price was going up. 2 ton and a 10 foot walk to the hole took about 1/2 an hour if I were to guess.
When we renovated this new house the first thing that was considered was where the coal bin was going, note I said coal bin and not the boiler. Since you are beyond that I'd be looking at putting a window here next to the bin if that is possible.: