I would tell them that they have rights to it until the end of the month however if they accommodate showings you will try to rent it before if that is ok with them. 

You'd probably have to open the walls up quite a bit to accommodate a shower/bath.

How is inflation accommodated in it? 

may be able to accommodate that price point. 

My parking area can technically fit a 4th car, but it would be tight and make maneuvering for other tenant cars more difficult.Should I accommodate this request? 

I have done numerous transactions with them and I am in the middle of closing one out right now and they are always more than accommodating.

And they've accommodated your 1031 nicely.

In the past 5 years, they even expanded the road to accommodate the explosion in traffic.

Do what the accommodator/facilitator says NOT a escrow/title/attorney. 

Third (I think by now ha) option is to sell off some of the acreage to a developer and make as part of the negotiations the building of your new home in terms of a discount maybe. 10 acres would accommodate current home, a modular home, a new build and maybe selling off a few lots it seems.