I would have said the snow blower was yours since possession is 9 tenths of the law.

No matter what State you are in, once the occupant takes possession of the property  through Seller financing and something go wrong, the burden of proof is on the lender to show that they did not lie and manipulate the Buyer into the financing.

Condo Association complained to me and to  local police about this  situation as unit as  has foul smell and bugs all over .Local Police went inside the property and found that no one is living there and place is full trash and clothes all over the place .I have started the  eviction process but that will take another month before i can get possession of my property.

Once you get a tax certificate you are allowed to take possession but most wait until they pay up through the years to a tax deed.

An option if it’s EXTENSIVE renovations.Stupid RTA.Alternatively if you haven’t made a offer already, add the condition of vacant possession and requiring a signed N11 and filed L2 to ensure they follow through with it.

Others will panic and try to sell it themselves immediately without a real estate agents help but,they won't accept the reality that their home equity is no longer in their possession and belongs to the bank foreclosing on them.They normally ask for almost all of their perceived equity from you at first even after you explain that their house is a mess in need of thousands of dollars in repairs and updating and no longer worth what their neighbors got for their homes last year.Your best bet for a cheaper bargain is to wait them out and snatch it a week before the auction when they're sweating bullets about moving out without a dime in their pockets to start over somewhere else.You need to be that life saver that shows up and saves the day with a small amount of money for them after the mortgage is paid off.

Do not spend money changing locks until you are granted possession. 

You likely need to serve notice (which can be done in some cases before you close) then you need to wait the required time and then you can get possession or have the sheriff escort them out of your property.

It could be argued that since it is vacant no one has possession.

Why wouldn't the owner just push back the close date or let you know they would be there when you took possession and then move out in a month?